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<!DOCTYPE html>
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<body>
<div class="container-fluid">
<div class="row">
<div id="sidebar" class="col-sm-3 col-md-2 sidebar">
<!--<ul class="nav nav-sidebar">
<li class="active"><a href="#">Overview <span class="sr-only">(current)</span></a></li>
</ul>-->
<ul>
<li><a href="#courseapi-frontend-stepbystep-tutorial"
id="toc-courseapi-frontend-stepbystep-tutorial">CourseApi
Frontend StepByStep Tutorial</a>
<ul>
<li><a href="#setup" id="toc-setup">Setup</a>
<ul>
<li><a href="#backend-cors-config"
id="toc-backend-cors-config">Backend Cors Config</a></li>
<li><a href="#setting-up-environments"
id="toc-setting-up-environments">Setting up
Environments</a></li>
<li><a href="#routing-module" id="toc-routing-module">Routing
Module</a></li>
</ul></li>
<li><a href="#services" id="toc-services">Services</a></li>
<li><a href="#models" id="toc-models">Models</a></li>
<li><a href="#components" id="toc-components">Components</a>
<ul>
<li><a href="#navbar---footer" id="toc-navbar---footer">Navbar
- Footer</a></li>
<li><a href="#topic-comp--get-all-topics"
id="toc-topic-comp--get-all-topics">Topic Comp- GET all
Topics</a></li>
<li><a href="#modal-addition-in-topic"
id="toc-modal-addition-in-topic">Modal Addition in
Topic</a></li>
<li><a href="#add-modal-for-topic"
id="toc-add-modal-for-topic">ADD Modal for Topic</a></li>
<li><a href="#update-modal-for-topic"
id="toc-update-modal-for-topic">UPDATE Modal for
Topic</a></li>
<li><a href="#delete-modal-for-topic"
id="toc-delete-modal-for-topic">DELETE Modal for
Topic</a></li>
</ul></li>
</ul></li>
</ul>
</div>
<div class="col-sm-9 col-sm-offset-3 col-md-10 col-md-offset-2 main">
<h1 id="courseapi-frontend-stepbystep-tutorial">CourseApi Frontend
StepByStep Tutorial</h1>
<p>This project was generated with <a
href="https://github.com/angular/angular-cli">Angular CLI</a> version
13.3.5.</p>
<h2 id="setup">Setup</h2>
<div class="sourceCode" id="cb1"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a><span class="ex">$</span> ng new TodoList</span>
<span id="cb1-2"><a href="#cb1-2" aria-hidden="true" tabindex="-1"></a><span class="ex">$</span> cd Todolist</span>
<span id="cb1-3"><a href="#cb1-3" aria-hidden="true" tabindex="-1"></a><span class="ex">$</span> npm install bootstrap</span>
<span id="cb1-4"><a href="#cb1-4" aria-hidden="true" tabindex="-1"></a><span class="ex">$</span> npm install jquery</span>
<span id="cb1-5"><a href="#cb1-5" aria-hidden="true" tabindex="-1"></a><span class="ex">--</span> Downloaded versions: <span class="st">"bootstrap"</span>: <span class="st">"^4.6.1"</span>, <span class="st">"jquery"</span>: <span class="st">"^3.6.0"</span>,</span>
<span id="cb1-6"><a href="#cb1-6" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb1-7"><a href="#cb1-7" aria-hidden="true" tabindex="-1"></a><span class="ex">We</span> will use </span></code></pre></div>
<p>We will use <a
href="https://www.bootdey.com/snippets/view/bs4-contact-cards">Bootdey -
bs4 contact cards</a> to design our frontend.</p>
<p>Configure <code>angular.json</code> to activate bootstrap and
jquery</p>
<div class="sourceCode" id="cb2"><pre
class="sourceCode json"><code class="sourceCode json"><span id="cb2-1"><a href="#cb2-1" aria-hidden="true" tabindex="-1"></a><span class="er">"architect":</span> <span class="fu">{</span></span>
<span id="cb2-2"><a href="#cb2-2" aria-hidden="true" tabindex="-1"></a> <span class="dt">"build"</span><span class="fu">:</span> <span class="fu">{</span></span>
<span id="cb2-3"><a href="#cb2-3" aria-hidden="true" tabindex="-1"></a> <span class="dt">"builder"</span><span class="fu">:</span> <span class="st">"@angular-devkit/build-angular:browser"</span><span class="fu">,</span></span>
<span id="cb2-4"><a href="#cb2-4" aria-hidden="true" tabindex="-1"></a> <span class="dt">"options"</span><span class="fu">:</span> <span class="fu">{</span></span>
<span id="cb2-5"><a href="#cb2-5" aria-hidden="true" tabindex="-1"></a> <span class="dt">"outputPath"</span><span class="fu">:</span> <span class="st">"dist/course-api-ui"</span><span class="fu">,</span></span>
<span id="cb2-6"><a href="#cb2-6" aria-hidden="true" tabindex="-1"></a> <span class="dt">"index"</span><span class="fu">:</span> <span class="st">"src/index.html"</span><span class="fu">,</span></span>
<span id="cb2-7"><a href="#cb2-7" aria-hidden="true" tabindex="-1"></a> <span class="dt">"main"</span><span class="fu">:</span> <span class="st">"src/main.ts"</span><span class="fu">,</span></span>
<span id="cb2-8"><a href="#cb2-8" aria-hidden="true" tabindex="-1"></a> <span class="dt">"polyfills"</span><span class="fu">:</span> <span class="st">"src/polyfills.ts"</span><span class="fu">,</span></span>
<span id="cb2-9"><a href="#cb2-9" aria-hidden="true" tabindex="-1"></a> <span class="dt">"tsConfig"</span><span class="fu">:</span> <span class="st">"tsconfig.app.json"</span><span class="fu">,</span></span>
<span id="cb2-10"><a href="#cb2-10" aria-hidden="true" tabindex="-1"></a> <span class="dt">"assets"</span><span class="fu">:</span> <span class="ot">[</span></span>
<span id="cb2-11"><a href="#cb2-11" aria-hidden="true" tabindex="-1"></a> <span class="st">"src/favicon.ico"</span><span class="ot">,</span></span>
<span id="cb2-12"><a href="#cb2-12" aria-hidden="true" tabindex="-1"></a> <span class="st">"src/assets"</span></span>
<span id="cb2-13"><a href="#cb2-13" aria-hidden="true" tabindex="-1"></a> <span class="ot">]</span><span class="fu">,</span></span>
<span id="cb2-14"><a href="#cb2-14" aria-hidden="true" tabindex="-1"></a> <span class="dt">"styles"</span><span class="fu">:</span> <span class="ot">[</span></span>
<span id="cb2-15"><a href="#cb2-15" aria-hidden="true" tabindex="-1"></a> <span class="st">"src/styles.css"</span><span class="ot">,</span></span>
<span id="cb2-16"><a href="#cb2-16" aria-hidden="true" tabindex="-1"></a> <span class="st">"./node_modules/bootstrap/dist/css/bootstrap.min.css"</span></span>
<span id="cb2-17"><a href="#cb2-17" aria-hidden="true" tabindex="-1"></a> <span class="ot">]</span><span class="fu">,</span></span>
<span id="cb2-18"><a href="#cb2-18" aria-hidden="true" tabindex="-1"></a> <span class="dt">"scripts"</span><span class="fu">:</span> <span class="ot">[</span></span>
<span id="cb2-19"><a href="#cb2-19" aria-hidden="true" tabindex="-1"></a> <span class="st">"./node_modules/jquery/dist/jquery.min.js"</span><span class="ot">,</span></span>
<span id="cb2-20"><a href="#cb2-20" aria-hidden="true" tabindex="-1"></a> <span class="st">"./node_modules/bootstrap/dist/js/bootstrap.js"</span></span>
<span id="cb2-21"><a href="#cb2-21" aria-hidden="true" tabindex="-1"></a> <span class="ot">]</span></span>
<span id="cb2-22"><a href="#cb2-22" aria-hidden="true" tabindex="-1"></a> <span class="fu">},</span></span></code></pre></div>
<h3 id="backend-cors-config">Backend Cors Config</h3>
<p><strong><em>application.properties</em></strong></p>
<pre class="proper"><code>frontendURL=http://localhost:4200
# frontendURL=</code></pre>
<p><strong><code>CourseAPI-Spring-Starter\src\main\java\com\swarna\courseapi\config\CorsConfig.java</code></strong></p>
<div class="sourceCode" id="cb4"><pre
class="sourceCode java"><code class="sourceCode java"><span id="cb4-1"><a href="#cb4-1" aria-hidden="true" tabindex="-1"></a><span class="kw">package</span><span class="im"> com</span><span class="op">.</span><span class="im">swarna</span><span class="op">.</span><span class="im">courseapi</span><span class="op">.</span><span class="im">config</span><span class="op">;</span></span>
<span id="cb4-2"><a href="#cb4-2" aria-hidden="true" tabindex="-1"></a><span class="kw">import</span> <span class="im">org</span><span class="op">.</span><span class="im">springframework</span><span class="op">.</span><span class="im">beans</span><span class="op">.</span><span class="im">factory</span><span class="op">.</span><span class="im">annotation</span><span class="op">.</span><span class="im">Value</span><span class="op">;</span></span>
<span id="cb4-3"><a href="#cb4-3" aria-hidden="true" tabindex="-1"></a><span class="kw">import</span> <span class="im">org</span><span class="op">.</span><span class="im">springframework</span><span class="op">.</span><span class="im">context</span><span class="op">.</span><span class="im">annotation</span><span class="op">.</span><span class="im">Configuration</span><span class="op">;</span></span>
<span id="cb4-4"><a href="#cb4-4" aria-hidden="true" tabindex="-1"></a><span class="kw">import</span> <span class="im">org</span><span class="op">.</span><span class="im">springframework</span><span class="op">.</span><span class="im">web</span><span class="op">.</span><span class="im">servlet</span><span class="op">.</span><span class="im">config</span><span class="op">.</span><span class="im">annotation</span><span class="op">.</span><span class="im">CorsRegistry</span><span class="op">;</span></span>
<span id="cb4-5"><a href="#cb4-5" aria-hidden="true" tabindex="-1"></a><span class="kw">import</span> <span class="im">org</span><span class="op">.</span><span class="im">springframework</span><span class="op">.</span><span class="im">web</span><span class="op">.</span><span class="im">servlet</span><span class="op">.</span><span class="im">config</span><span class="op">.</span><span class="im">annotation</span><span class="op">.</span><span class="im">WebMvcConfigurer</span><span class="op">;</span></span>
<span id="cb4-6"><a href="#cb4-6" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb4-7"><a href="#cb4-7" aria-hidden="true" tabindex="-1"></a><span class="at">@Configuration</span></span>
<span id="cb4-8"><a href="#cb4-8" aria-hidden="true" tabindex="-1"></a><span class="kw">public</span> <span class="kw">class</span> CorsConfig <span class="kw">implements</span> WebMvcConfigurer<span class="op">{</span></span>
<span id="cb4-9"><a href="#cb4-9" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb4-10"><a href="#cb4-10" aria-hidden="true" tabindex="-1"></a> <span class="co">// @Value("${frontendURL}")</span></span>
<span id="cb4-11"><a href="#cb4-11" aria-hidden="true" tabindex="-1"></a> <span class="co">// private String frontendURL;</span></span>
<span id="cb4-12"><a href="#cb4-12" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb4-13"><a href="#cb4-13" aria-hidden="true" tabindex="-1"></a> <span class="at">@Override</span></span>
<span id="cb4-14"><a href="#cb4-14" aria-hidden="true" tabindex="-1"></a> <span class="kw">public</span> <span class="dt">void</span> <span class="fu">addCorsMappings</span><span class="op">(</span>CorsRegistry registry<span class="op">)</span> <span class="op">{</span></span>
<span id="cb4-15"><a href="#cb4-15" aria-hidden="true" tabindex="-1"></a> <span class="co">// WebMvcConfigurer.super.addCorsMappings(registry);</span></span>
<span id="cb4-16"><a href="#cb4-16" aria-hidden="true" tabindex="-1"></a> <span class="co">// registry.addMapping("/**").allowedOrigins(frontendURL)</span></span>
<span id="cb4-17"><a href="#cb4-17" aria-hidden="true" tabindex="-1"></a> registry<span class="op">.</span><span class="fu">addMapping</span><span class="op">(</span><span class="st">"/**"</span><span class="op">).</span><span class="fu">allowedOrigins</span><span class="op">(</span><span class="st">"*"</span><span class="op">)</span></span>
<span id="cb4-18"><a href="#cb4-18" aria-hidden="true" tabindex="-1"></a> <span class="op">.</span><span class="fu">allowedMethods</span><span class="op">(</span><span class="st">"GET"</span><span class="op">,</span> <span class="st">"POST"</span><span class="op">,</span> <span class="st">"PUT"</span><span class="op">,</span> <span class="st">"DELETE"</span><span class="op">,</span> <span class="st">"OPTIONS"</span><span class="op">);</span></span>
<span id="cb4-19"><a href="#cb4-19" aria-hidden="true" tabindex="-1"></a> <span class="op">}</span></span>
<span id="cb4-20"><a href="#cb4-20" aria-hidden="true" tabindex="-1"></a><span class="op">}</span></span></code></pre></div>
<h3 id="setting-up-environments">Setting up Environments</h3>
<p><strong><em>environment.ts</em></strong></p>
<div class="sourceCode" id="cb5"><pre
class="sourceCode typescript"><code class="sourceCode typescript"><span id="cb5-1"><a href="#cb5-1" aria-hidden="true" tabindex="-1"></a><span class="im">export</span> <span class="kw">const</span> environment <span class="op">=</span> {</span>
<span id="cb5-2"><a href="#cb5-2" aria-hidden="true" tabindex="-1"></a> production<span class="op">:</span> <span class="kw">false</span><span class="op">,</span></span>
<span id="cb5-3"><a href="#cb5-3" aria-hidden="true" tabindex="-1"></a> apiServerUrl <span class="op">:</span> <span class="st">'http://localhost:8080'</span> <span class="co">// baseUrl is the URL for backend</span></span>
<span id="cb5-4"><a href="#cb5-4" aria-hidden="true" tabindex="-1"></a>}<span class="op">;</span></span></code></pre></div>
<p><strong><em>environment.prod.ts</em></strong></p>
<div class="sourceCode" id="cb6"><pre
class="sourceCode typescript"><code class="sourceCode typescript"><span id="cb6-1"><a href="#cb6-1" aria-hidden="true" tabindex="-1"></a><span class="im">export</span> <span class="kw">const</span> environment <span class="op">=</span> {</span>
<span id="cb6-2"><a href="#cb6-2" aria-hidden="true" tabindex="-1"></a> production<span class="op">:</span> <span class="kw">false</span><span class="op">,</span></span>
<span id="cb6-3"><a href="#cb6-3" aria-hidden="true" tabindex="-1"></a> apiServerUrl <span class="op">:</span> <span class="st">'https://courseapi-spring-boot.herokuapp.com'</span> <span class="co">// apiServerUrl is the URL for backend</span></span>
<span id="cb6-4"><a href="#cb6-4" aria-hidden="true" tabindex="-1"></a>}<span class="op">;</span></span></code></pre></div>
<p>Adding <code>HttpClientModule</code> to
<strong><em>app.module.ts</em></strong>, so that it can fetch data from
backend.</p>
<div class="sourceCode" id="cb7"><pre
class="sourceCode typescript"><code class="sourceCode typescript"><span id="cb7-1"><a href="#cb7-1" aria-hidden="true" tabindex="-1"></a><span class="im">import</span> { HttpClientModule } <span class="im">from</span> <span class="st">'@angular/common/http'</span></span>
<span id="cb7-2"><a href="#cb7-2" aria-hidden="true" tabindex="-1"></a><span class="op">...</span></span>
<span id="cb7-3"><a href="#cb7-3" aria-hidden="true" tabindex="-1"></a> imports<span class="op">:</span> [</span>
<span id="cb7-4"><a href="#cb7-4" aria-hidden="true" tabindex="-1"></a> BrowserModule<span class="op">,</span></span>
<span id="cb7-5"><a href="#cb7-5" aria-hidden="true" tabindex="-1"></a> AppRoutingModule<span class="op">,</span></span>
<span id="cb7-6"><a href="#cb7-6" aria-hidden="true" tabindex="-1"></a> HttpClientModule<span class="op">,</span></span>
<span id="cb7-7"><a href="#cb7-7" aria-hidden="true" tabindex="-1"></a> ]<span class="op">,</span></span>
<span id="cb7-8"><a href="#cb7-8" aria-hidden="true" tabindex="-1"></a><span class="op">...</span></span></code></pre></div>
<h3 id="routing-module">Routing Module</h3>
<p><strong><em>app-routing.module.ts</em></strong> - Used to fetch data
from <code>TopicService</code> and send the data to HTML.</p>
<div class="sourceCode" id="cb8"><pre
class="sourceCode typescript"><code class="sourceCode typescript"><span id="cb8-1"><a href="#cb8-1" aria-hidden="true" tabindex="-1"></a><span class="im">import</span> { NgModule } <span class="im">from</span> <span class="st">'@angular/core'</span><span class="op">;</span></span>
<span id="cb8-2"><a href="#cb8-2" aria-hidden="true" tabindex="-1"></a><span class="im">import</span> { RouterModule<span class="op">,</span> Routes } <span class="im">from</span> <span class="st">'@angular/router'</span><span class="op">;</span></span>
<span id="cb8-3"><a href="#cb8-3" aria-hidden="true" tabindex="-1"></a><span class="im">import</span> { TopicComponent } <span class="im">from</span> <span class="st">'./components/topic/topic.component'</span><span class="op">;</span></span>
<span id="cb8-4"><a href="#cb8-4" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb8-5"><a href="#cb8-5" aria-hidden="true" tabindex="-1"></a><span class="kw">const</span> routes<span class="op">:</span> Routes <span class="op">=</span> [</span>
<span id="cb8-6"><a href="#cb8-6" aria-hidden="true" tabindex="-1"></a> { path<span class="op">:</span> <span class="st">'topics'</span><span class="op">,</span> component<span class="op">:</span> TopicComponent }<span class="op">,</span></span>
<span id="cb8-7"><a href="#cb8-7" aria-hidden="true" tabindex="-1"></a>]<span class="op">;</span></span>
<span id="cb8-8"><a href="#cb8-8" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb8-9"><a href="#cb8-9" aria-hidden="true" tabindex="-1"></a>@<span class="fu">NgModule</span>({</span>
<span id="cb8-10"><a href="#cb8-10" aria-hidden="true" tabindex="-1"></a> imports<span class="op">:</span> [RouterModule<span class="op">.</span><span class="fu">forRoot</span>(routes)]<span class="op">,</span></span>
<span id="cb8-11"><a href="#cb8-11" aria-hidden="true" tabindex="-1"></a> exports<span class="op">:</span> [RouterModule]</span>
<span id="cb8-12"><a href="#cb8-12" aria-hidden="true" tabindex="-1"></a>})</span>
<span id="cb8-13"><a href="#cb8-13" aria-hidden="true" tabindex="-1"></a><span class="im">export</span> <span class="kw">class</span> AppRoutingModule { }</span></code></pre></div>
<h2 id="services">Services</h2>
<ul>
<li>Generate command : <code>ng g s services/Topic</code></li>
</ul>
<p><strong><em>topic.service.ts</em></strong> - To Extract
<strong>Topics</strong> data from backend</p>
<div class="sourceCode" id="cb9"><pre
class="sourceCode typescript"><code class="sourceCode typescript"><span id="cb9-1"><a href="#cb9-1" aria-hidden="true" tabindex="-1"></a><span class="im">import</span> { HttpClient } <span class="im">from</span> <span class="st">'@angular/common/http'</span><span class="op">;</span></span>
<span id="cb9-2"><a href="#cb9-2" aria-hidden="true" tabindex="-1"></a><span class="im">import</span> { Injectable } <span class="im">from</span> <span class="st">'@angular/core'</span><span class="op">;</span></span>
<span id="cb9-3"><a href="#cb9-3" aria-hidden="true" tabindex="-1"></a><span class="im">import</span> { Observable } <span class="im">from</span> <span class="st">'rxjs'</span><span class="op">;</span></span>
<span id="cb9-4"><a href="#cb9-4" aria-hidden="true" tabindex="-1"></a><span class="im">import</span> { environment } <span class="im">from</span> <span class="st">'src/environments/environment'</span><span class="op">;</span></span>
<span id="cb9-5"><a href="#cb9-5" aria-hidden="true" tabindex="-1"></a><span class="im">import</span> { Topic } <span class="im">from</span> <span class="st">'../models/Topic'</span><span class="op">;</span></span>
<span id="cb9-6"><a href="#cb9-6" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb9-7"><a href="#cb9-7" aria-hidden="true" tabindex="-1"></a>@<span class="fu">Injectable</span>({</span>
<span id="cb9-8"><a href="#cb9-8" aria-hidden="true" tabindex="-1"></a> providedIn<span class="op">:</span> <span class="st">'root'</span><span class="op">,</span></span>
<span id="cb9-9"><a href="#cb9-9" aria-hidden="true" tabindex="-1"></a>})</span>
<span id="cb9-10"><a href="#cb9-10" aria-hidden="true" tabindex="-1"></a><span class="im">export</span> <span class="kw">class</span> TopicService {</span>
<span id="cb9-11"><a href="#cb9-11" aria-hidden="true" tabindex="-1"></a> <span class="kw">constructor</span>(<span class="kw">private</span> http<span class="op">:</span> HttpClient) {}</span>
<span id="cb9-12"><a href="#cb9-12" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb9-13"><a href="#cb9-13" aria-hidden="true" tabindex="-1"></a> <span class="kw">public</span> <span class="fu">getAllTopics</span>()<span class="op">:</span> Observable<span class="op"><</span>Topic[]<span class="op">></span> {</span>
<span id="cb9-14"><a href="#cb9-14" aria-hidden="true" tabindex="-1"></a> <span class="cf">return</span> <span class="kw">this</span><span class="op">.</span><span class="at">http</span><span class="op">.</span><span class="fu">get</span><span class="op"><</span>Topic[]<span class="op">></span>(<span class="vs">`</span><span class="sc">${</span>environment<span class="op">.</span><span class="at">apiServerUrl</span><span class="sc">}</span><span class="vs">/topics`</span>)<span class="op">;</span></span>
<span id="cb9-15"><a href="#cb9-15" aria-hidden="true" tabindex="-1"></a> }</span>
<span id="cb9-16"><a href="#cb9-16" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb9-17"><a href="#cb9-17" aria-hidden="true" tabindex="-1"></a> <span class="kw">public</span> <span class="fu">addTopic</span>(topic<span class="op">:</span> Topic)<span class="op">:</span> Observable<span class="op"><</span>Topic<span class="op">></span> {</span>
<span id="cb9-18"><a href="#cb9-18" aria-hidden="true" tabindex="-1"></a> <span class="cf">return</span> <span class="kw">this</span><span class="op">.</span><span class="at">http</span><span class="op">.</span><span class="fu">post</span><span class="op"><</span>Topic<span class="op">></span>(<span class="vs">`</span><span class="sc">${</span>environment<span class="op">.</span><span class="at">apiServerUrl</span><span class="sc">}</span><span class="vs">/topics`</span><span class="op">,</span> topic)<span class="op">;</span></span>
<span id="cb9-19"><a href="#cb9-19" aria-hidden="true" tabindex="-1"></a> }</span>
<span id="cb9-20"><a href="#cb9-20" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb9-21"><a href="#cb9-21" aria-hidden="true" tabindex="-1"></a> <span class="kw">public</span> <span class="fu">updateTopic</span>(topic<span class="op">:</span> Topic<span class="op">,</span> topicId<span class="op">:</span> <span class="dt">string</span>)<span class="op">:</span> Observable<span class="op"><</span>Topic<span class="op">></span> {</span>
<span id="cb9-22"><a href="#cb9-22" aria-hidden="true" tabindex="-1"></a> <span class="cf">return</span> <span class="kw">this</span><span class="op">.</span><span class="at">http</span><span class="op">.</span><span class="fu">put</span><span class="op"><</span>Topic<span class="op">></span>(<span class="vs">`</span><span class="sc">${</span>environment<span class="op">.</span><span class="at">apiServerUrl</span><span class="sc">}</span><span class="vs">/topics/</span><span class="sc">${</span>topicId<span class="sc">}</span><span class="vs">`</span><span class="op">,</span> topic)<span class="op">;</span></span>
<span id="cb9-23"><a href="#cb9-23" aria-hidden="true" tabindex="-1"></a> }</span>
<span id="cb9-24"><a href="#cb9-24" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb9-25"><a href="#cb9-25" aria-hidden="true" tabindex="-1"></a> <span class="kw">public</span> <span class="fu">deleteTopic</span>(topicId<span class="op">:</span> <span class="dt">string</span>)<span class="op">:</span> Observable<span class="op"><</span><span class="dt">void</span><span class="op">></span> {</span>
<span id="cb9-26"><a href="#cb9-26" aria-hidden="true" tabindex="-1"></a> <span class="cf">return</span> <span class="kw">this</span><span class="op">.</span><span class="at">http</span><span class="op">.</span><span class="fu">delete</span><span class="op"><</span><span class="dt">void</span><span class="op">></span>(<span class="vs">`</span><span class="sc">${</span>environment<span class="op">.</span><span class="at">apiServerUrl</span><span class="sc">}</span><span class="vs">/topics/</span><span class="sc">${</span>topicId<span class="sc">}</span><span class="vs">`</span>)<span class="op">;</span></span>
<span id="cb9-27"><a href="#cb9-27" aria-hidden="true" tabindex="-1"></a> }</span>
<span id="cb9-28"><a href="#cb9-28" aria-hidden="true" tabindex="-1"></a>}</span></code></pre></div>
<h2 id="models">Models</h2>
<p><strong><em>Topic.ts</em></strong> - Topic Interface</p>
<div class="sourceCode" id="cb10"><pre
class="sourceCode typescript"><code class="sourceCode typescript"><span id="cb10-1"><a href="#cb10-1" aria-hidden="true" tabindex="-1"></a><span class="im">export</span> <span class="kw">interface</span> Topic{</span>
<span id="cb10-2"><a href="#cb10-2" aria-hidden="true" tabindex="-1"></a> id<span class="op">:</span> <span class="dt">string</span><span class="op">;</span></span>
<span id="cb10-3"><a href="#cb10-3" aria-hidden="true" tabindex="-1"></a> name<span class="op">:</span> <span class="dt">string</span><span class="op">;</span></span>
<span id="cb10-4"><a href="#cb10-4" aria-hidden="true" tabindex="-1"></a> description<span class="op">:</span> <span class="dt">string</span><span class="op">;</span></span>
<span id="cb10-5"><a href="#cb10-5" aria-hidden="true" tabindex="-1"></a>}</span></code></pre></div>
<h2 id="components">Components</h2>
<h3 id="navbar---footer">Navbar - Footer</h3>
<p><strong><em>app.component.html</em></strong></p>
<div class="sourceCode" id="cb11"><pre
class="sourceCode html"><code class="sourceCode html"><span id="cb11-1"><a href="#cb11-1" aria-hidden="true" tabindex="-1"></a><span class="kw"><nav</span> <span class="er">class</span><span class="ot">=</span><span class="st">"navbar navbar-expand-lg navbar-dark bg-dark"</span><span class="kw">></span></span>
<span id="cb11-2"><a href="#cb11-2" aria-hidden="true" tabindex="-1"></a> <span class="kw"><a</span> <span class="er">class</span><span class="ot">=</span><span class="st">"navbar-brand"</span> <span class="er">routerLink</span><span class="ot">=</span><span class="st">"/"</span><span class="kw">><i</span> <span class="er">class</span><span class="ot">=</span><span class="st">"fa fa-book"</span><span class="kw">></i></span> CourseAPI Fullstack<span class="kw"></a></span></span>
<span id="cb11-3"><a href="#cb11-3" aria-hidden="true" tabindex="-1"></a> <span class="kw"><button</span> <span class="er">class</span><span class="ot">=</span><span class="st">"navbar-toggler"</span> <span class="er">type</span><span class="ot">=</span><span class="st">"button"</span> <span class="er">data-toggle</span><span class="ot">=</span><span class="st">"collapse"</span> <span class="er">data-target</span><span class="ot">=</span><span class="st">"#navbarSupportedContent"</span> <span class="er">aria-controls</span><span class="ot">=</span><span class="st">"navbarSupportedContent"</span> <span class="er">aria-expanded</span><span class="ot">=</span><span class="st">"false"</span> <span class="er">aria-label</span><span class="ot">=</span><span class="st">"Toggle navigation"</span><span class="kw">></span></span>
<span id="cb11-4"><a href="#cb11-4" aria-hidden="true" tabindex="-1"></a> <span class="kw"><span</span> <span class="er">class</span><span class="ot">=</span><span class="st">"navbar-toggler-icon"</span><span class="kw">></span></span></span>
<span id="cb11-5"><a href="#cb11-5" aria-hidden="true" tabindex="-1"></a> <span class="kw"></button></span></span>
<span id="cb11-6"><a href="#cb11-6" aria-hidden="true" tabindex="-1"></a> </span>
<span id="cb11-7"><a href="#cb11-7" aria-hidden="true" tabindex="-1"></a> <span class="kw"><div</span> <span class="er">class</span><span class="ot">=</span><span class="st">"collapse navbar-collapse"</span> <span class="er">id</span><span class="ot">=</span><span class="st">"navbarSupportedContent"</span><span class="kw">></span></span>
<span id="cb11-8"><a href="#cb11-8" aria-hidden="true" tabindex="-1"></a> <span class="kw"><ul</span> <span class="er">class</span><span class="ot">=</span><span class="st">"navbar-nav mr-auto"</span><span class="kw">></span></span>
<span id="cb11-9"><a href="#cb11-9" aria-hidden="true" tabindex="-1"></a> <span class="kw"><li</span> <span class="er">class</span><span class="ot">=</span><span class="st">"nav-item active"</span><span class="kw">></span></span>
<span id="cb11-10"><a href="#cb11-10" aria-hidden="true" tabindex="-1"></a> <span class="kw"><a</span> <span class="er">class</span><span class="ot">=</span><span class="st">"nav-link"</span> <span class="er">routerLink</span><span class="ot">=</span><span class="st">"/topics"</span><span class="kw">></span>All Topics <span class="kw"><span</span> <span class="er">class</span><span class="ot">=</span><span class="st">"sr-only"</span><span class="kw">></span>(current)<span class="kw"></span></a></span></span>
<span id="cb11-11"><a href="#cb11-11" aria-hidden="true" tabindex="-1"></a> <span class="kw"></li></span></span>
<span id="cb11-12"><a href="#cb11-12" aria-hidden="true" tabindex="-1"></a> <span class="kw"></ul></span></span>
<span id="cb11-13"><a href="#cb11-13" aria-hidden="true" tabindex="-1"></a> <span class="kw"><form</span> <span class="er">class</span><span class="ot">=</span><span class="st">"form-inline my-2 my-lg-0"</span><span class="kw">></span></span>
<span id="cb11-14"><a href="#cb11-14" aria-hidden="true" tabindex="-1"></a> <span class="kw"><input</span> <span class="er">class</span><span class="ot">=</span><span class="st">"form-control mr-sm-2"</span> <span class="er">type</span><span class="ot">=</span><span class="st">"search"</span> <span class="er">placeholder</span><span class="ot">=</span><span class="st">"Search Item..."</span> <span class="er">aria-label</span><span class="ot">=</span><span class="st">"Search"</span><span class="kw">></span></span>
<span id="cb11-15"><a href="#cb11-15" aria-hidden="true" tabindex="-1"></a> <span class="kw"></form></span></span>
<span id="cb11-16"><a href="#cb11-16" aria-hidden="true" tabindex="-1"></a> <span class="kw"></div></span></span>
<span id="cb11-17"><a href="#cb11-17" aria-hidden="true" tabindex="-1"></a><span class="kw"></nav></span></span>
<span id="cb11-18"><a href="#cb11-18" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb11-19"><a href="#cb11-19" aria-hidden="true" tabindex="-1"></a><span class="kw"><div</span> <span class="er">class</span><span class="ot">=</span><span class="st">"my-3"</span><span class="kw">></span></span>
<span id="cb11-20"><a href="#cb11-20" aria-hidden="true" tabindex="-1"></a> <span class="kw"><router-outlet></router-outlet></span></span>
<span id="cb11-21"><a href="#cb11-21" aria-hidden="true" tabindex="-1"></a><span class="kw"></div></span></span>
<span id="cb11-22"><a href="#cb11-22" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb11-23"><a href="#cb11-23" aria-hidden="true" tabindex="-1"></a><span class="kw"><footer</span> <span class="er">class</span><span class="ot">=</span><span class="st">"footer text-light"</span><span class="kw">></span></span>
<span id="cb11-24"><a href="#cb11-24" aria-hidden="true" tabindex="-1"></a> <span class="kw"><div</span> <span class="er">class</span><span class="ot">=</span><span class="st">"footer-container align-middle text-center"</span><span class="kw">></span></span>
<span id="cb11-25"><a href="#cb11-25" aria-hidden="true" tabindex="-1"></a> <span class="kw"><i></span>Made with <span class="kw"><i</span> <span class="er">class</span><span class="ot">=</span><span class="st">"fa fa-heart"</span><span class="kw">></i></span> by <span class="kw"><a</span> <span class="er">class</span><span class="ot">=</span><span class="st">"text-light"</span> <span class="er">href</span><span class="ot">=</span><span class="st">"https://swarnadeepghosh.github.io/"</span><span class="kw">></span>Swarnadeep<span class="kw"></a></i></span></span>
<span id="cb11-26"><a href="#cb11-26" aria-hidden="true" tabindex="-1"></a> <span class="kw"></div></span></span>
<span id="cb11-27"><a href="#cb11-27" aria-hidden="true" tabindex="-1"></a><span class="kw"></footer></span></span></code></pre></div>
<p><strong><em>app.component.css</em></strong></p>
<div class="sourceCode" id="cb12"><pre
class="sourceCode css"><code class="sourceCode css"><span id="cb12-1"><a href="#cb12-1" aria-hidden="true" tabindex="-1"></a><span class="fu">.footer</span>{</span>
<span id="cb12-2"><a href="#cb12-2" aria-hidden="true" tabindex="-1"></a> <span class="kw">position</span>: <span class="dv">fixed</span><span class="op">;</span></span>
<span id="cb12-3"><a href="#cb12-3" aria-hidden="true" tabindex="-1"></a> <span class="kw">bottom</span>: <span class="dv">0</span><span class="op">;</span></span>
<span id="cb12-4"><a href="#cb12-4" aria-hidden="true" tabindex="-1"></a> <span class="kw">width</span>: <span class="dv">100</span><span class="dt">%</span><span class="op">;</span></span>
<span id="cb12-5"><a href="#cb12-5" aria-hidden="true" tabindex="-1"></a> <span class="kw">height</span>: <span class="dv">40</span><span class="dt">px</span><span class="op">;</span></span>
<span id="cb12-6"><a href="#cb12-6" aria-hidden="true" tabindex="-1"></a> <span class="kw">background-color</span>: <span class="cn">#000000</span><span class="op">;</span></span>
<span id="cb12-7"><a href="#cb12-7" aria-hidden="true" tabindex="-1"></a>}</span>
<span id="cb12-8"><a href="#cb12-8" aria-hidden="true" tabindex="-1"></a><span class="fu">.footer-container</span>{</span>
<span id="cb12-9"><a href="#cb12-9" aria-hidden="true" tabindex="-1"></a> <span class="kw">padding</span>: <span class="dv">8</span><span class="dt">px</span><span class="op">;</span></span>
<span id="cb12-10"><a href="#cb12-10" aria-hidden="true" tabindex="-1"></a>}</span></code></pre></div>
<h3 id="topic-comp--get-all-topics">Topic Comp- GET all Topics</h3>
<ul>
<li><p>Generate command : <code>ng g c components/Topic</code></p></li>
<li><p>Open <a
href="https://www.bootdey.com/snippets/view/bs4-contact-cards">Bootdey -
bs4 contact cards</a> and copy HTML and CSS in appropriate
place.</p></li>
<li><p>app-<strong><em>routing.module.ts</em></strong></p>
<div class="sourceCode" id="cb13"><pre
class="sourceCode typescript"><code class="sourceCode typescript"><span id="cb13-1"><a href="#cb13-1" aria-hidden="true" tabindex="-1"></a><span class="kw">const</span> routes<span class="op">:</span> Routes <span class="op">=</span> [</span>
<span id="cb13-2"><a href="#cb13-2" aria-hidden="true" tabindex="-1"></a> { path<span class="op">:</span> <span class="st">''</span><span class="op">,</span> redirectTo<span class="op">:</span> <span class="st">'/topics'</span><span class="op">,</span> pathMatch<span class="op">:</span> <span class="st">'full'</span> }<span class="op">,</span></span>
<span id="cb13-3"><a href="#cb13-3" aria-hidden="true" tabindex="-1"></a> { path<span class="op">:</span> <span class="st">'topics'</span><span class="op">,</span> component<span class="op">:</span> TopicComponent }<span class="op">,</span></span>
<span id="cb13-4"><a href="#cb13-4" aria-hidden="true" tabindex="-1"></a> { path<span class="op">:</span> <span class="st">'**'</span><span class="op">,</span> component<span class="op">:</span> ErrorComponent }<span class="op">,</span></span>
<span id="cb13-5"><a href="#cb13-5" aria-hidden="true" tabindex="-1"></a>]<span class="op">;</span></span></code></pre></div></li>
<li><p><strong><em>topic.component.html</em></strong> - Copy HTML from
Bootdey to here, and added for loop, so that</p>
<div class="sourceCode" id="cb14"><pre
class="sourceCode html"><code class="sourceCode html"><span id="cb14-1"><a href="#cb14-1" aria-hidden="true" tabindex="-1"></a><span class="co"><!-- <link href="https://maxcdn.bootstrapcdn.com/font-awesome/4.3.0/css/font-awesome.min.css" rel="stylesheet"> --></span></span>
<span id="cb14-2"><a href="#cb14-2" aria-hidden="true" tabindex="-1"></a><span class="kw"><div</span> <span class="er">class</span><span class="ot">=</span><span class="st">"container"</span><span class="kw">></span></span>
<span id="cb14-3"><a href="#cb14-3" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb14-4"><a href="#cb14-4" aria-hidden="true" tabindex="-1"></a> <span class="kw"><div</span> <span class="er">class</span><span class="ot">=</span><span class="st">"row"</span><span class="kw">></span></span>
<span id="cb14-5"><a href="#cb14-5" aria-hidden="true" tabindex="-1"></a> <span class="kw"><div</span> <span class="er">class</span><span class="ot">=</span><span class="st">"col-md-8 my-3 text-center"</span><span class="kw">></span></span>
<span id="cb14-6"><a href="#cb14-6" aria-hidden="true" tabindex="-1"></a> <span class="kw"><h2></span>All Topics<span class="kw"></h2></span></span>
<span id="cb14-7"><a href="#cb14-7" aria-hidden="true" tabindex="-1"></a> <span class="kw"></div></span></span>
<span id="cb14-8"><a href="#cb14-8" aria-hidden="true" tabindex="-1"></a> <span class="kw"><div</span> <span class="er">class</span><span class="ot">=</span><span class="st">"col-md-4 my-3 text-center"</span><span class="kw">></span></span>
<span id="cb14-9"><a href="#cb14-9" aria-hidden="true" tabindex="-1"></a> <span class="kw"><a</span> <span class="er">class</span><span class="ot">=</span><span class="st">"btn mx-2 btn-primary"</span> <span class="er">data-placement</span><span class="ot">=</span><span class="st">"top"</span> <span class="er">data-original-title</span><span class="ot">=</span><span class="st">"Add"</span><span class="kw">></span> Add Topic <span class="kw"><i</span> <span class="er">class</span><span class="ot">=</span><span class="st">"fa fa-plus"</span><span class="kw">></i></span> <span class="kw"></a></span></span>
<span id="cb14-10"><a href="#cb14-10" aria-hidden="true" tabindex="-1"></a> <span class="kw"></div></span></span>
<span id="cb14-11"><a href="#cb14-11" aria-hidden="true" tabindex="-1"></a> <span class="kw"></div></span></span>
<span id="cb14-12"><a href="#cb14-12" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb14-13"><a href="#cb14-13" aria-hidden="true" tabindex="-1"></a> <span class="kw"><div</span> <span class="er">class</span><span class="ot">=</span><span class="st">"row"</span><span class="kw">></span></span>
<span id="cb14-14"><a href="#cb14-14" aria-hidden="true" tabindex="-1"></a> <span class="kw"><div</span> <span class="er">*ngFor</span><span class="ot">=</span><span class="st">"let topic of topics"</span> <span class="er">class</span><span class="ot">=</span><span class="st">"col-md-6 col-xl-3"</span><span class="kw">></span></span>
<span id="cb14-15"><a href="#cb14-15" aria-hidden="true" tabindex="-1"></a> <span class="kw"><div</span> <span class="er">class</span><span class="ot">=</span><span class="st">"card m-b-30"</span><span class="kw">></span></span>
<span id="cb14-16"><a href="#cb14-16" aria-hidden="true" tabindex="-1"></a> <span class="kw"><div</span> <span class="er">class</span><span class="ot">=</span><span class="st">"card-body row"</span><span class="kw">></span></span>
<span id="cb14-17"><a href="#cb14-17" aria-hidden="true" tabindex="-1"></a> <span class="kw"><div</span> <span class="er">class</span><span class="ot">=</span><span class="st">"col-6"</span><span class="kw">></span></span>
<span id="cb14-18"><a href="#cb14-18" aria-hidden="true" tabindex="-1"></a> <span class="kw"><a</span> <span class="er">href</span><span class="ot">=</span><span class="st">""</span><span class="kw">><img</span> <span class="er">src</span><span class="ot">=</span><span class="st">"https://springframework.guru/wp-content/uploads/2015/02/spring-framework-project-logo.png"</span> <span class="er">alt</span><span class="ot">=</span><span class="st">""</span> <span class="er">class</span><span class="ot">=</span><span class="st">"img-fluid rounded-circle w-60"</span><span class="kw">></a></span></span>
<span id="cb14-19"><a href="#cb14-19" aria-hidden="true" tabindex="-1"></a> <span class="kw"></div></span></span>
<span id="cb14-20"><a href="#cb14-20" aria-hidden="true" tabindex="-1"></a> <span class="kw"><div</span> <span class="er">class</span><span class="ot">=</span><span class="st">"col-6 card-title align-self-center mb-0"</span><span class="kw">></span></span>
<span id="cb14-21"><a href="#cb14-21" aria-hidden="true" tabindex="-1"></a> <span class="kw"><h5></span>{{topic.name}}<span class="kw"></h5></span></span>
<span id="cb14-22"><a href="#cb14-22" aria-hidden="true" tabindex="-1"></a> <span class="co"><!-- <p class="m-0">ID : {{topic.id}}</p> --></span></span>
<span id="cb14-23"><a href="#cb14-23" aria-hidden="true" tabindex="-1"></a> <span class="kw"></div></span></span>
<span id="cb14-24"><a href="#cb14-24" aria-hidden="true" tabindex="-1"></a> <span class="kw"></div></span></span>
<span id="cb14-25"><a href="#cb14-25" aria-hidden="true" tabindex="-1"></a> <span class="kw"><ul</span> <span class="er">class</span><span class="ot">=</span><span class="st">"list-group list-group-flush"</span><span class="kw">></span></span>
<span id="cb14-26"><a href="#cb14-26" aria-hidden="true" tabindex="-1"></a> <span class="co"><!-- <li class="list-group-item"><i class="fa fa-envelope float-right"></i>Email : <a href="#">PaulGoyette@gmail.com</a></li> --></span></span>
<span id="cb14-27"><a href="#cb14-27" aria-hidden="true" tabindex="-1"></a> <span class="kw"><li</span> <span class="er">class</span><span class="ot">=</span><span class="st">"list-group-item"</span><span class="kw">><i</span> <span class="er">class</span><span class="ot">=</span><span class="st">"fa fa-user float-right"</span><span class="kw">></i></span>ID : <span class="kw"><strong></span>{{topic.id}}<span class="kw"></strong></li></span></span>
<span id="cb14-28"><a href="#cb14-28" aria-hidden="true" tabindex="-1"></a> <span class="kw"><li</span> <span class="er">class</span><span class="ot">=</span><span class="st">"list-group-item"</span><span class="kw">><i</span> <span class="er">class</span><span class="ot">=</span><span class="st">"fa fa-code float-right"</span><span class="kw">></i></span>{{topic.description}}<span class="kw"></li></span></span>
<span id="cb14-29"><a href="#cb14-29" aria-hidden="true" tabindex="-1"></a> <span class="kw"></ul></span></span>
<span id="cb14-30"><a href="#cb14-30" aria-hidden="true" tabindex="-1"></a> <span class="kw"><div</span> <span class="er">class</span><span class="ot">=</span><span class="st">"card-body"</span><span class="kw">></span></span>
<span id="cb14-31"><a href="#cb14-31" aria-hidden="true" tabindex="-1"></a> <span class="kw"><div</span> <span class="er">class</span><span class="ot">=</span><span class="st">"float-right btn-group btn-group-sm"</span><span class="kw">></span></span>
<span id="cb14-32"><a href="#cb14-32" aria-hidden="true" tabindex="-1"></a> <span class="kw"><a</span> <span class="er">href</span><span class="ot">=</span><span class="st">"#"</span> <span class="er">class</span><span class="ot">=</span><span class="st">"btn mx-2 btn-primary tooltips"</span> <span class="er">data-placement</span><span class="ot">=</span><span class="st">"top"</span> <span class="er">data-toggle</span><span class="ot">=</span><span class="st">"tooltip"</span> <span class="er">data-original-title</span><span class="ot">=</span><span class="st">"Edit"</span><span class="kw">><i</span> <span class="er">class</span><span class="ot">=</span><span class="st">"fa fa-pencil"</span><span class="kw">></i></span> <span class="kw"></a></span></span>
<span id="cb14-33"><a href="#cb14-33" aria-hidden="true" tabindex="-1"></a> <span class="kw"><a</span> <span class="er">href</span><span class="ot">=</span><span class="st">"#"</span> <span class="er">class</span><span class="ot">=</span><span class="st">"btn btn-danger tooltips"</span> <span class="er">data-placement</span><span class="ot">=</span><span class="st">"top"</span> <span class="er">data-toggle</span><span class="ot">=</span><span class="st">"tooltip"</span> <span class="er">data-original-title</span><span class="ot">=</span><span class="st">"Delete"</span><span class="kw">><i</span> <span class="er">class</span><span class="ot">=</span><span class="st">"fa fa-times"</span><span class="kw">></i></a></span></span>
<span id="cb14-34"><a href="#cb14-34" aria-hidden="true" tabindex="-1"></a> <span class="kw"></div></span></span>
<span id="cb14-35"><a href="#cb14-35" aria-hidden="true" tabindex="-1"></a> <span class="kw"><ul</span> <span class="er">class</span><span class="ot">=</span><span class="st">"social-links list-inline mb-0"</span><span class="kw">></span></span>
<span id="cb14-36"><a href="#cb14-36" aria-hidden="true" tabindex="-1"></a> <span class="kw"><button</span> <span class="er">type</span><span class="ot">=</span><span class="st">"button"</span> <span class="er">class</span><span class="ot">=</span><span class="st">"btn btn-outline-success list-inline-item"</span><span class="kw">></span>Courses <span class="kw"><i</span> <span class="er">class</span><span class="ot">=</span><span class="st">"fa fa-hand-o-right"</span><span class="kw">></i></button></span></span>
<span id="cb14-37"><a href="#cb14-37" aria-hidden="true" tabindex="-1"></a> <span class="co"><!-- <li class="list-inline-item"><a title="" data-placement="top" data-toggle="tooltip" class="tooltips" href="" data-original-title="Facebook"><i class="fa fa-facebook-f"></i></a></li></span></span>
<span id="cb14-38"><a href="#cb14-38" aria-hidden="true" tabindex="-1"></a><span class="co"> </ul></span></span>
<span id="cb14-39"><a href="#cb14-39" aria-hidden="true" tabindex="-1"></a><span class="co"> </div></span></span>
<span id="cb14-40"><a href="#cb14-40" aria-hidden="true" tabindex="-1"></a><span class="co"> </div></span></span>
<span id="cb14-41"><a href="#cb14-41" aria-hidden="true" tabindex="-1"></a><span class="co"> </div></span></span>
<span id="cb14-42"><a href="#cb14-42" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb14-43"><a href="#cb14-43" aria-hidden="true" tabindex="-1"></a><span class="co"> </div></span></span>
<span id="cb14-44"><a href="#cb14-44" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb14-45"><a href="#cb14-45" aria-hidden="true" tabindex="-1"></a><span class="co"> <!</span><span class="er">--</span><span class="co"> Notification for NO item --></span></span>
<span id="cb14-46"><a href="#cb14-46" aria-hidden="true" tabindex="-1"></a> <span class="kw"><div</span> <span class="er">*ngIf</span><span class="ot">=</span><span class="st">"topics?.length == 0"</span> <span class="er">class</span><span class="ot">=</span><span class="st">"col-lg-12 col-md-12 col-xl-12"</span><span class="kw">></span></span>
<span id="cb14-47"><a href="#cb14-47" aria-hidden="true" tabindex="-1"></a> <span class="kw"><div</span> <span class="er">class</span><span class="ot">=</span><span class="st">"alert alert-info"</span> <span class="er">role</span><span class="ot">=</span><span class="st">"alert"</span><span class="kw">></span></span>
<span id="cb14-48"><a href="#cb14-48" aria-hidden="true" tabindex="-1"></a> <span class="kw"><h4</span> <span class="er">class</span><span class="ot">=</span><span class="st">"alert-heading"</span><span class="kw">></span>NO TOPICS !!<span class="kw"></h4></span></span>
<span id="cb14-49"><a href="#cb14-49" aria-hidden="true" tabindex="-1"></a> <span class="kw"><p></span>No Topics were found.<span class="kw"></p></span></span>
<span id="cb14-50"><a href="#cb14-50" aria-hidden="true" tabindex="-1"></a> <span class="kw"></div></span></span>
<span id="cb14-51"><a href="#cb14-51" aria-hidden="true" tabindex="-1"></a> <span class="kw"></div></span></span>
<span id="cb14-52"><a href="#cb14-52" aria-hidden="true" tabindex="-1"></a><span class="kw"></div></span></span></code></pre></div></li>
<li><p><strong><em>styles.css</em></strong> - Copy CSS from Bootdey to
here.</p>
<div class="sourceCode" id="cb15"><pre
class="sourceCode css"><code class="sourceCode css"><span id="cb15-1"><a href="#cb15-1" aria-hidden="true" tabindex="-1"></a><span class="co">/* You can add global styles to this file, and also import other style files */</span></span>
<span id="cb15-2"><a href="#cb15-2" aria-hidden="true" tabindex="-1"></a><span class="co">/* @import url('https://cdn.jsdelivr.net/npm/bootstrap@4.6.1/dist/css/bootstrap.min.css'); */</span></span>
<span id="cb15-3"><a href="#cb15-3" aria-hidden="true" tabindex="-1"></a><span class="im">@import</span> <span class="fu">url(</span><span class="st">'https://maxcdn.bootstrapcdn.com/font-awesome/4.3.0/css/font-awesome.min.css'</span><span class="fu">)</span><span class="op">;</span></span>
<span id="cb15-4"><a href="#cb15-4" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb15-5"><a href="#cb15-5" aria-hidden="true" tabindex="-1"></a>body{</span>
<span id="cb15-6"><a href="#cb15-6" aria-hidden="true" tabindex="-1"></a> <span class="kw">margin-top</span>:<span class="dv">20</span><span class="dt">px</span><span class="op">;</span></span>
<span id="cb15-7"><a href="#cb15-7" aria-hidden="true" tabindex="-1"></a> <span class="kw">background</span>: <span class="cn">#ebebeb</span><span class="op">;</span></span>
<span id="cb15-8"><a href="#cb15-8" aria-hidden="true" tabindex="-1"></a> <span class="kw">background-color</span>: <span class="cn">#d1d1d1</span><span class="op">;</span></span>
<span id="cb15-9"><a href="#cb15-9" aria-hidden="true" tabindex="-1"></a>}</span>
<span id="cb15-10"><a href="#cb15-10" aria-hidden="true" tabindex="-1"></a><span class="fu">.card</span> {</span>
<span id="cb15-11"><a href="#cb15-11" aria-hidden="true" tabindex="-1"></a> <span class="kw">border</span>: <span class="dv">none</span><span class="op">;</span></span>
<span id="cb15-12"><a href="#cb15-12" aria-hidden="true" tabindex="-1"></a> <span class="kw">-webkit-box-shadow</span>: <span class="dv">0</span> <span class="dv">1</span><span class="dt">px</span> <span class="dv">2</span><span class="dt">px</span> <span class="dv">0</span> <span class="fu">rgba(</span><span class="dv">0</span><span class="op">,</span><span class="dv">0</span><span class="op">,</span><span class="dv">0</span><span class="op">,</span><span class="dv">.05</span><span class="fu">)</span><span class="op">;</span></span>
<span id="cb15-13"><a href="#cb15-13" aria-hidden="true" tabindex="-1"></a> <span class="kw">box-shadow</span>: <span class="dv">0</span> <span class="dv">1</span><span class="dt">px</span> <span class="dv">2</span><span class="dt">px</span> <span class="dv">0</span> <span class="fu">rgba(</span><span class="dv">0</span><span class="op">,</span><span class="dv">0</span><span class="op">,</span><span class="dv">0</span><span class="op">,</span><span class="dv">.05</span><span class="fu">)</span><span class="op">;</span></span>
<span id="cb15-14"><a href="#cb15-14" aria-hidden="true" tabindex="-1"></a> <span class="kw">margin-bottom</span>: <span class="dv">30</span><span class="dt">px</span><span class="op">;</span></span>
<span id="cb15-15"><a href="#cb15-15" aria-hidden="true" tabindex="-1"></a>}</span>
<span id="cb15-16"><a href="#cb15-16" aria-hidden="true" tabindex="-1"></a><span class="fu">.w-60</span> {</span>
<span id="cb15-17"><a href="#cb15-17" aria-hidden="true" tabindex="-1"></a> <span class="kw">width</span>: <span class="dv">60</span><span class="dt">px</span><span class="op">;</span></span>
<span id="cb15-18"><a href="#cb15-18" aria-hidden="true" tabindex="-1"></a>}</span>
<span id="cb15-19"><a href="#cb15-19" aria-hidden="true" tabindex="-1"></a>h1<span class="op">,</span> h2<span class="op">,</span> h3<span class="op">,</span> h4<span class="op">,</span> h5<span class="op">,</span> h6 {</span>
<span id="cb15-20"><a href="#cb15-20" aria-hidden="true" tabindex="-1"></a> <span class="kw">margin</span>: <span class="dv">0</span> <span class="dv">0</span> <span class="dv">10</span><span class="dt">px</span><span class="op">;</span></span>
<span id="cb15-21"><a href="#cb15-21" aria-hidden="true" tabindex="-1"></a> <span class="kw">font-weight</span>: <span class="dv">600</span><span class="op">;</span></span>
<span id="cb15-22"><a href="#cb15-22" aria-hidden="true" tabindex="-1"></a>}</span>
<span id="cb15-23"><a href="#cb15-23" aria-hidden="true" tabindex="-1"></a><span class="fu">.social-links</span> li a {</span>
<span id="cb15-24"><a href="#cb15-24" aria-hidden="true" tabindex="-1"></a> <span class="kw">-webkit-border-radius</span>: <span class="dv">50</span><span class="dt">%</span><span class="op">;</span></span>
<span id="cb15-25"><a href="#cb15-25" aria-hidden="true" tabindex="-1"></a> <span class="kw">background-color</span>: <span class="fu">rgba(</span><span class="dv">89</span><span class="op">,</span><span class="dv">206</span><span class="op">,</span><span class="dv">181</span><span class="op">,</span><span class="dv">.85</span><span class="fu">)</span><span class="op">;</span></span>
<span id="cb15-26"><a href="#cb15-26" aria-hidden="true" tabindex="-1"></a> <span class="kw">border-radius</span>: <span class="dv">50</span><span class="dt">%</span><span class="op">;</span></span>
<span id="cb15-27"><a href="#cb15-27" aria-hidden="true" tabindex="-1"></a> <span class="kw">color</span>: <span class="cn">#fff</span><span class="op">;</span></span>
<span id="cb15-28"><a href="#cb15-28" aria-hidden="true" tabindex="-1"></a> <span class="kw">display</span>: <span class="dv">inline-block</span><span class="op">;</span></span>
<span id="cb15-29"><a href="#cb15-29" aria-hidden="true" tabindex="-1"></a> <span class="kw">height</span>: <span class="dv">30</span><span class="dt">px</span><span class="op">;</span></span>
<span id="cb15-30"><a href="#cb15-30" aria-hidden="true" tabindex="-1"></a> <span class="kw">line-height</span>: <span class="dv">30</span><span class="dt">px</span><span class="op">;</span></span>
<span id="cb15-31"><a href="#cb15-31" aria-hidden="true" tabindex="-1"></a> <span class="kw">text-align</span>: <span class="dv">center</span><span class="op">;</span></span>
<span id="cb15-32"><a href="#cb15-32" aria-hidden="true" tabindex="-1"></a> <span class="kw">width</span>: <span class="dv">30</span><span class="dt">px</span><span class="op">;</span></span>
<span id="cb15-33"><a href="#cb15-33" aria-hidden="true" tabindex="-1"></a> <span class="kw">font-size</span>: <span class="dv">12</span><span class="dt">px</span><span class="op">;</span></span>
<span id="cb15-34"><a href="#cb15-34" aria-hidden="true" tabindex="-1"></a>}</span>
<span id="cb15-35"><a href="#cb15-35" aria-hidden="true" tabindex="-1"></a>a {</span>
<span id="cb15-36"><a href="#cb15-36" aria-hidden="true" tabindex="-1"></a> <span class="kw">color</span>: <span class="cn">#707070</span><span class="op">;</span></span>
<span id="cb15-37"><a href="#cb15-37" aria-hidden="true" tabindex="-1"></a>}</span></code></pre></div></li>
<li><p><strong><em>topic.component.ts</em></strong> - Used to fetch data
from <code>TopicService</code> and send the data to HTML.</p>
<div class="sourceCode" id="cb16"><pre
class="sourceCode typescript"><code class="sourceCode typescript"><span id="cb16-1"><a href="#cb16-1" aria-hidden="true" tabindex="-1"></a><span class="im">import</span> { HttpErrorResponse } <span class="im">from</span> <span class="st">'@angular/common/http'</span><span class="op">;</span></span>
<span id="cb16-2"><a href="#cb16-2" aria-hidden="true" tabindex="-1"></a><span class="im">import</span> { Topic } <span class="im">from</span> <span class="st">'src/app/models/Topic'</span><span class="op">;</span></span>
<span id="cb16-3"><a href="#cb16-3" aria-hidden="true" tabindex="-1"></a><span class="im">import</span> { TopicService } <span class="im">from</span> <span class="st">'src/app/services/topic.service'</span><span class="op">;</span></span>
<span id="cb16-4"><a href="#cb16-4" aria-hidden="true" tabindex="-1"></a><span class="op">...</span></span>
<span id="cb16-5"><a href="#cb16-5" aria-hidden="true" tabindex="-1"></a><span class="im">export</span> <span class="kw">class</span> TopicComponent <span class="kw">implements</span> OnInit {</span>
<span id="cb16-6"><a href="#cb16-6" aria-hidden="true" tabindex="-1"></a> <span class="kw">public</span> topics<span class="op">:</span> Topic[] <span class="op">=</span> []<span class="op">;</span></span>
<span id="cb16-7"><a href="#cb16-7" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb16-8"><a href="#cb16-8" aria-hidden="true" tabindex="-1"></a> <span class="kw">constructor</span>(<span class="kw">private</span> topicService<span class="op">:</span> TopicService) {}</span>
<span id="cb16-9"><a href="#cb16-9" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb16-10"><a href="#cb16-10" aria-hidden="true" tabindex="-1"></a> <span class="fu">ngOnInit</span>()<span class="op">:</span> <span class="dt">void</span> {</span>
<span id="cb16-11"><a href="#cb16-11" aria-hidden="true" tabindex="-1"></a> <span class="kw">this</span><span class="op">.</span><span class="fu">getTopics</span>()<span class="op">;</span></span>
<span id="cb16-12"><a href="#cb16-12" aria-hidden="true" tabindex="-1"></a> }</span>
<span id="cb16-13"><a href="#cb16-13" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb16-14"><a href="#cb16-14" aria-hidden="true" tabindex="-1"></a> <span class="kw">public</span> <span class="fu">getTopics</span>()<span class="op">:</span> <span class="dt">void</span> {</span>
<span id="cb16-15"><a href="#cb16-15" aria-hidden="true" tabindex="-1"></a> <span class="kw">this</span><span class="op">.</span><span class="at">topicService</span><span class="op">.</span><span class="fu">getAllTopics</span>()<span class="op">.</span><span class="fu">subscribe</span>(</span>
<span id="cb16-16"><a href="#cb16-16" aria-hidden="true" tabindex="-1"></a> (response<span class="op">:</span> Topic[]) <span class="kw">=></span> { <span class="kw">this</span><span class="op">.</span><span class="at">topics</span> <span class="op">=</span> response<span class="op">;</span> }<span class="op">,</span> </span>
<span id="cb16-17"><a href="#cb16-17" aria-hidden="true" tabindex="-1"></a> (error<span class="op">:</span> HttpErrorResponse) <span class="kw">=></span> { <span class="bu">console</span><span class="op">.</span><span class="fu">log</span>(error<span class="op">.</span><span class="at">message</span>)<span class="op">;</span> }</span>
<span id="cb16-18"><a href="#cb16-18" aria-hidden="true" tabindex="-1"></a> )<span class="op">;</span></span>
<span id="cb16-19"><a href="#cb16-19" aria-hidden="true" tabindex="-1"></a> }</span>
<span id="cb16-20"><a href="#cb16-20" aria-hidden="true" tabindex="-1"></a>}</span></code></pre></div></li>
</ul>
<p><strong>Snapshot after adding Header, Footer and Get all
Topics</strong></p>
<p><img src="images/snapshot-1.png" style="zoom:67%;" /></p>
<h3 id="modal-addition-in-topic">Modal Addition in Topic</h3>
<ul>
<li><p><strong>index.html</strong> - Popper js will be required for
Modals</p>
<div class="sourceCode" id="cb17"><pre
class="sourceCode html"><code class="sourceCode html"><span id="cb17-1"><a href="#cb17-1" aria-hidden="true" tabindex="-1"></a> <span class="kw"><script</span> <span class="er">src</span><span class="ot">=</span><span class="st">"https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.9/umd/popper.min.js"</span><span class="kw">></script></span></span></code></pre></div></li>
<li><p><strong><em>topic.component.ts</em></strong> -
<code>onOpenModal()</code> will be called for each Add/ Update/ Delete
operation and this will decide which Modal to choose as per
<code>data-target</code>.</p>
<div class="sourceCode" id="cb18"><pre
class="sourceCode typescript"><code class="sourceCode typescript"><span id="cb18-1"><a href="#cb18-1" aria-hidden="true" tabindex="-1"></a><span class="kw">public</span> updateTopic<span class="op">:</span> Topic<span class="op">;</span></span>
<span id="cb18-2"><a href="#cb18-2" aria-hidden="true" tabindex="-1"></a><span class="kw">public</span> deleteTopic<span class="op">:</span> Topic<span class="op">;</span></span>
<span id="cb18-3"><a href="#cb18-3" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb18-4"><a href="#cb18-4" aria-hidden="true" tabindex="-1"></a><span class="kw">public</span> <span class="fu">onOpenModal</span>(topic<span class="op">:</span> Topic<span class="op">,</span> mode<span class="op">:</span> <span class="dt">string</span>)<span class="op">:</span> <span class="dt">void</span> {</span>
<span id="cb18-5"><a href="#cb18-5" aria-hidden="true" tabindex="-1"></a> <span class="kw">const</span> container <span class="op">=</span> <span class="bu">document</span><span class="op">.</span><span class="fu">getElementById</span>(<span class="st">'main-container'</span>)<span class="op">;</span></span>
<span id="cb18-6"><a href="#cb18-6" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb18-7"><a href="#cb18-7" aria-hidden="true" tabindex="-1"></a><span class="co">// Basically we will create below button through JavaScript</span></span>
<span id="cb18-8"><a href="#cb18-8" aria-hidden="true" tabindex="-1"></a><span class="co">//<button type="button" class="btn btn-primary" data-toggle="modal" data-target="#exampleModal">Launch modal</button></span></span>
<span id="cb18-9"><a href="#cb18-9" aria-hidden="true" tabindex="-1"></a><span class="kw">const</span> button <span class="op">=</span> <span class="bu">document</span><span class="op">.</span><span class="fu">createElement</span>(<span class="st">'button'</span>)<span class="op">;</span></span>
<span id="cb18-10"><a href="#cb18-10" aria-hidden="true" tabindex="-1"></a>button<span class="op">.</span><span class="at">type</span> <span class="op">=</span> <span class="st">'button'</span><span class="op">;</span> <span class="co">// To change default button type from Submit.</span></span>
<span id="cb18-11"><a href="#cb18-11" aria-hidden="true" tabindex="-1"></a>button<span class="op">.</span><span class="at">style</span><span class="op">.</span><span class="at">display</span> <span class="op">=</span> <span class="st">'none'</span><span class="op">;</span> <span class="co">// Hide the button in UI, we will use already created button for Add / delete / update</span></span>
<span id="cb18-12"><a href="#cb18-12" aria-hidden="true" tabindex="-1"></a>button<span class="op">.</span><span class="fu">setAttribute</span>(<span class="st">'data-toggle'</span><span class="op">,</span> <span class="st">'modal'</span>)<span class="op">;</span></span>
<span id="cb18-13"><a href="#cb18-13" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb18-14"><a href="#cb18-14" aria-hidden="true" tabindex="-1"></a><span class="co">// Setting data Target as per mode</span></span>
<span id="cb18-15"><a href="#cb18-15" aria-hidden="true" tabindex="-1"></a><span class="cf">if</span> (mode <span class="op">===</span> <span class="st">'add'</span>) {</span>
<span id="cb18-16"><a href="#cb18-16" aria-hidden="true" tabindex="-1"></a> button<span class="op">.</span><span class="fu">setAttribute</span>(<span class="st">'data-target'</span><span class="op">,</span> <span class="st">'#addTopicModal'</span>)<span class="op">;</span></span>
<span id="cb18-17"><a href="#cb18-17" aria-hidden="true" tabindex="-1"></a> <span class="bu">console</span><span class="op">.</span><span class="fu">log</span>(<span class="st">'Add called'</span>)<span class="op">;</span></span>
<span id="cb18-18"><a href="#cb18-18" aria-hidden="true" tabindex="-1"></a>}</span>
<span id="cb18-19"><a href="#cb18-19" aria-hidden="true" tabindex="-1"></a><span class="cf">if</span> (mode <span class="op">===</span> <span class="st">'update'</span>) {</span>
<span id="cb18-20"><a href="#cb18-20" aria-hidden="true" tabindex="-1"></a> <span class="kw">this</span><span class="op">.</span><span class="at">updateTopic</span> <span class="op">=</span> topic<span class="op">;</span></span>
<span id="cb18-21"><a href="#cb18-21" aria-hidden="true" tabindex="-1"></a> button<span class="op">.</span><span class="fu">setAttribute</span>(<span class="st">'data-target'</span><span class="op">,</span> <span class="st">'#updateTopicModal'</span>)<span class="op">;</span></span>
<span id="cb18-22"><a href="#cb18-22" aria-hidden="true" tabindex="-1"></a> <span class="bu">console</span><span class="op">.</span><span class="fu">log</span>(<span class="st">'Update called'</span>)<span class="op">;</span></span>
<span id="cb18-23"><a href="#cb18-23" aria-hidden="true" tabindex="-1"></a>}</span>
<span id="cb18-24"><a href="#cb18-24" aria-hidden="true" tabindex="-1"></a><span class="cf">if</span> (mode <span class="op">===</span> <span class="st">'delete'</span>) {</span>
<span id="cb18-25"><a href="#cb18-25" aria-hidden="true" tabindex="-1"></a> <span class="kw">this</span><span class="op">.</span><span class="at">deleteTopic</span> <span class="op">=</span> topic<span class="op">;</span></span>
<span id="cb18-26"><a href="#cb18-26" aria-hidden="true" tabindex="-1"></a> button<span class="op">.</span><span class="fu">setAttribute</span>(<span class="st">'data-target'</span><span class="op">,</span> <span class="st">'#deleteTopicModal'</span>)<span class="op">;</span></span>
<span id="cb18-27"><a href="#cb18-27" aria-hidden="true" tabindex="-1"></a> <span class="bu">console</span><span class="op">.</span><span class="fu">log</span>(<span class="st">'delete called'</span>)<span class="op">;</span></span>
<span id="cb18-28"><a href="#cb18-28" aria-hidden="true" tabindex="-1"></a>}</span>
<span id="cb18-29"><a href="#cb18-29" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb18-30"><a href="#cb18-30" aria-hidden="true" tabindex="-1"></a>container<span class="op">?.</span><span class="fu">appendChild</span>(button)<span class="op">;</span> <span class="co">// Adding the button to the view, so that it can do its job</span></span>
<span id="cb18-31"><a href="#cb18-31" aria-hidden="true" tabindex="-1"></a>button<span class="op">.</span><span class="fu">click</span>()<span class="op">;</span></span>
<span id="cb18-32"><a href="#cb18-32" aria-hidden="true" tabindex="-1"></a>}</span></code></pre></div></li>
<li><p><strong><em>topic.component.html</em></strong> - calling
<code>onOpenModal()</code>, which will decide which Modal to choose as
per <code>data-target</code>.</p>
<div class="sourceCode" id="cb19"><pre
class="sourceCode html"><code class="sourceCode html"><span id="cb19-1"><a href="#cb19-1" aria-hidden="true" tabindex="-1"></a><span class="co"><!-- Buttons from where onOpenModal() will be called--></span></span>
<span id="cb19-2"><a href="#cb19-2" aria-hidden="true" tabindex="-1"></a><span class="kw"><a</span> <span class="er">(click)</span><span class="ot">=</span><span class="st">"onOpenModal(null, 'add')"</span> <span class="er">class</span><span class="ot">=</span><span class="st">"btn mx-2 btn-primary"</span> <span class="er">data-placement</span><span class="ot">=</span><span class="st">"top"</span> <span class="er">data-original-title</span><span class="ot">=</span><span class="st">"Add"</span><span class="kw">></span> Add Topic <span class="kw"><i</span> <span class="er">class</span><span class="ot">=</span><span class="st">"fa fa-plus"</span><span class="kw">></i></span> <span class="kw"></a></span> ... </span>
<span id="cb19-3"><a href="#cb19-3" aria-hidden="true" tabindex="-1"></a><span class="kw"><a</span> <span class="er">(click)</span><span class="ot">=</span><span class="st">"onOpenModal(topic, 'update')"</span> <span class="er">class</span><span class="ot">=</span><span class="st">"btn mx-2 btn-primary tooltips"</span> <span class="er">data-placement</span><span class="ot">=</span><span class="st">"top"</span> <span class="er">data-original-title</span><span class="ot">=</span><span class="st">"Edit"</span><span class="kw">><i</span> <span class="er">class</span><span class="ot">=</span><span class="st">"fa fa-pencil"</span><span class="kw">></i></span> <span class="kw"></a></span> ...</span>
<span id="cb19-4"><a href="#cb19-4" aria-hidden="true" tabindex="-1"></a><span class="kw"><a</span> <span class="er">(click)</span><span class="ot">=</span><span class="st">"onOpenModal(topic, 'delete')"</span> <span class="er">class</span><span class="ot">=</span><span class="st">"btn btn-danger tooltips"</span> <span class="er">data-placement</span><span class="ot">=</span><span class="st">"top"</span> <span class="er">data-original-title</span><span class="ot">=</span><span class="st">"Delete"</span><span class="kw">><i</span> <span class="er">class</span><span class="ot">=</span><span class="st">"fa fa-times"</span><span class="kw">></i></a></span> ...</span>
<span id="cb19-5"><a href="#cb19-5" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb19-6"><a href="#cb19-6" aria-hidden="true" tabindex="-1"></a><span class="co"><!-- Modals --></span></span>
<span id="cb19-7"><a href="#cb19-7" aria-hidden="true" tabindex="-1"></a><span class="kw"><div</span> <span class="er">class</span><span class="ot">=</span><span class="st">"modal fade"</span> <span class="er">id</span><span class="ot">=</span><span class="st">"addTopicModal"</span> <span class="er">tabindex</span><span class="ot">=</span><span class="st">"-1"</span> <span class="er">role</span><span class="ot">=</span><span class="st">"dialog"</span> <span class="er">aria-labelledby</span><span class="ot">=</span><span class="st">"addModalLabel"</span> <span class="er">aria-hidden</span><span class="ot">=</span><span class="st">"true"</span><span class="kw">></span> ... <span class="kw"></div></span></span>
<span id="cb19-8"><a href="#cb19-8" aria-hidden="true" tabindex="-1"></a><span class="kw"><div</span> <span class="er">class</span><span class="ot">=</span><span class="st">"modal fade"</span> <span class="er">id</span><span class="ot">=</span><span class="st">"updateTopicModal"</span> <span class="er">tabindex</span><span class="ot">=</span><span class="st">"-1"</span> <span class="er">role</span><span class="ot">=</span><span class="st">"dialog"</span> <span class="er">aria-labelledby</span><span class="ot">=</span><span class="st">"updateModalLabel"</span> <span class="er">aria-hidden</span><span class="ot">=</span><span class="st">"true"</span><span class="kw">></span> ... <span class="kw"></div></span></span>
<span id="cb19-9"><a href="#cb19-9" aria-hidden="true" tabindex="-1"></a><span class="kw"><div</span> <span class="er">class</span><span class="ot">=</span><span class="st">"modal fade"</span> <span class="er">id</span><span class="ot">=</span><span class="st">"deleteTopicModal"</span> <span class="er">tabindex</span><span class="ot">=</span><span class="st">"-1"</span> <span class="er">role</span><span class="ot">=</span><span class="st">"dialog"</span> <span class="er">aria-labelledby</span><span class="ot">=</span><span class="st">"deleteModalLabel"</span> <span class="er">aria-hidden</span><span class="ot">=</span><span class="st">"true"</span><span class="kw">></span> ... <span class="kw"></div></span></span></code></pre></div></li>
<li><p><strong>app.module.ts</strong> - Adding <code>FormsModule</code>
for Modals</p>
<div class="sourceCode" id="cb20"><pre
class="sourceCode typescript"><code class="sourceCode typescript"><span id="cb20-1"><a href="#cb20-1" aria-hidden="true" tabindex="-1"></a><span class="im">import</span> { FormsModule } <span class="im">from</span> <span class="st">'@angular/forms'</span><span class="op">;</span></span>
<span id="cb20-2"><a href="#cb20-2" aria-hidden="true" tabindex="-1"></a>imports<span class="op">:</span> [</span>
<span id="cb20-3"><a href="#cb20-3" aria-hidden="true" tabindex="-1"></a> <span class="op">...</span></span>
<span id="cb20-4"><a href="#cb20-4" aria-hidden="true" tabindex="-1"></a> FormsModule</span>
<span id="cb20-5"><a href="#cb20-5" aria-hidden="true" tabindex="-1"></a>]<span class="op">,</span></span></code></pre></div></li>
</ul>
<h3 id="add-modal-for-topic">ADD Modal for Topic</h3>
<p><strong><em>topic.component.ts</em></strong></p>
<div class="sourceCode" id="cb21"><pre
class="sourceCode typescript"><code class="sourceCode typescript"><span id="cb21-1"><a href="#cb21-1" aria-hidden="true" tabindex="-1"></a> <span class="kw">public</span> <span class="fu">onAddTopic</span>(addForm<span class="op">:</span> NgForm)<span class="op">:</span> <span class="dt">void</span> {</span>
<span id="cb21-2"><a href="#cb21-2" aria-hidden="true" tabindex="-1"></a> <span class="bu">document</span><span class="op">.</span><span class="fu">getElementById</span>(<span class="st">'add-topic-form'</span>)<span class="op">.</span><span class="fu">click</span>()<span class="op">;</span> <span class="co">// This will close add modal after submit</span></span>
<span id="cb21-3"><a href="#cb21-3" aria-hidden="true" tabindex="-1"></a> <span class="kw">this</span><span class="op">.</span><span class="at">topicService</span><span class="op">.</span><span class="fu">addTopic</span>(addForm<span class="op">.</span><span class="at">value</span>)<span class="op">.</span><span class="fu">subscribe</span>(</span>
<span id="cb21-4"><a href="#cb21-4" aria-hidden="true" tabindex="-1"></a> (response<span class="op">:</span> Topic) <span class="kw">=></span> {</span>
<span id="cb21-5"><a href="#cb21-5" aria-hidden="true" tabindex="-1"></a> <span class="bu">console</span><span class="op">.</span><span class="fu">log</span>(response)<span class="op">;</span></span>
<span id="cb21-6"><a href="#cb21-6" aria-hidden="true" tabindex="-1"></a> <span class="kw">this</span><span class="op">.</span><span class="fu">getTopics</span>()<span class="op">;</span></span>
<span id="cb21-7"><a href="#cb21-7" aria-hidden="true" tabindex="-1"></a> addForm<span class="op">.</span><span class="fu">reset</span>()<span class="op">;</span></span>
<span id="cb21-8"><a href="#cb21-8" aria-hidden="true" tabindex="-1"></a> }<span class="op">,</span></span>
<span id="cb21-9"><a href="#cb21-9" aria-hidden="true" tabindex="-1"></a> (error<span class="op">:</span> HttpErrorResponse) <span class="kw">=></span> {</span>
<span id="cb21-10"><a href="#cb21-10" aria-hidden="true" tabindex="-1"></a> <span class="fu">alert</span>(error<span class="op">.</span><span class="at">message</span>)<span class="op">;</span></span>
<span id="cb21-11"><a href="#cb21-11" aria-hidden="true" tabindex="-1"></a> addForm<span class="op">.</span><span class="fu">reset</span>()<span class="op">;</span></span>
<span id="cb21-12"><a href="#cb21-12" aria-hidden="true" tabindex="-1"></a> }</span>
<span id="cb21-13"><a href="#cb21-13" aria-hidden="true" tabindex="-1"></a> )<span class="op">;</span></span>
<span id="cb21-14"><a href="#cb21-14" aria-hidden="true" tabindex="-1"></a> }</span></code></pre></div>
<p><strong><em>topic.component.html</em></strong></p>
<div class="sourceCode" id="cb22"><pre
class="sourceCode html"><code class="sourceCode html"><span id="cb22-1"><a href="#cb22-1" aria-hidden="true" tabindex="-1"></a><span class="co"><!-- ADD Item Modal--></span></span>
<span id="cb22-2"><a href="#cb22-2" aria-hidden="true" tabindex="-1"></a><span class="kw"><div</span> <span class="er">class</span><span class="ot">=</span><span class="st">"modal fade"</span> <span class="er">id</span><span class="ot">=</span><span class="st">"addTopicModal"</span> <span class="er">tabindex</span><span class="ot">=</span><span class="st">"-1"</span> <span class="er">role</span><span class="ot">=</span><span class="st">"dialog"</span> <span class="er">aria-labelledby</span><span class="ot">=</span><span class="st">"addModalLabel"</span><span class="er">aria-hidden</span><span class="ot">=</span><span class="st">"true"</span><span class="kw">></span></span>
<span id="cb22-3"><a href="#cb22-3" aria-hidden="true" tabindex="-1"></a> <span class="kw"><div</span> <span class="er">class</span><span class="ot">=</span><span class="st">"modal-dialog"</span> <span class="er">role</span><span class="ot">=</span><span class="st">"document"</span><span class="kw">></span></span>
<span id="cb22-4"><a href="#cb22-4" aria-hidden="true" tabindex="-1"></a> <span class="kw"><div</span> <span class="er">class</span><span class="ot">=</span><span class="st">"modal-content"</span><span class="kw">></span></span>
<span id="cb22-5"><a href="#cb22-5" aria-hidden="true" tabindex="-1"></a> <span class="kw"><div</span> <span class="er">class</span><span class="ot">=</span><span class="st">"modal-header"</span><span class="kw">></span></span>
<span id="cb22-6"><a href="#cb22-6" aria-hidden="true" tabindex="-1"></a> <span class="kw"><h5</span> <span class="er">class</span><span class="ot">=</span><span class="st">"modal-title"</span> <span class="er">id</span><span class="ot">=</span><span class="st">"addModalLabel"</span><span class="kw">></span>Add New Topic<span class="kw"></h5></span></span>
<span id="cb22-7"><a href="#cb22-7" aria-hidden="true" tabindex="-1"></a> <span class="kw"><button</span> <span class="er">type</span><span class="ot">=</span><span class="st">"button"</span> <span class="er">class</span><span class="ot">=</span><span class="st">"close"</span> <span class="er">data-dismiss</span><span class="ot">=</span><span class="st">"modal"</span> <span class="er">aria-label</span><span class="ot">=</span><span class="st">"Close"</span><span class="kw">></span></span>
<span id="cb22-8"><a href="#cb22-8" aria-hidden="true" tabindex="-1"></a> <span class="kw"><span</span> <span class="er">aria-hidden</span><span class="ot">=</span><span class="st">"true"</span><span class="kw">></span><span class="dv">&times;</span><span class="kw"></span></span></span>
<span id="cb22-9"><a href="#cb22-9" aria-hidden="true" tabindex="-1"></a> <span class="kw"></button></span></span>
<span id="cb22-10"><a href="#cb22-10" aria-hidden="true" tabindex="-1"></a> <span class="kw"></div></span></span>
<span id="cb22-11"><a href="#cb22-11" aria-hidden="true" tabindex="-1"></a> <span class="kw"><div</span> <span class="er">class</span><span class="ot">=</span><span class="st">"modal-body"</span><span class="kw">></span></span>
<span id="cb22-12"><a href="#cb22-12" aria-hidden="true" tabindex="-1"></a> <span class="kw"><form</span> <span class="er">#addForm</span><span class="ot">=</span><span class="st">"ngForm"</span> <span class="er">(ngSubmit)</span><span class="ot">=</span><span class="st">"onAddTopic(addForm)"</span><span class="kw">></span></span>
<span id="cb22-13"><a href="#cb22-13" aria-hidden="true" tabindex="-1"></a> <span class="kw"><div</span> <span class="er">class</span><span class="ot">=</span><span class="st">"form-group"</span><span class="kw">></span></span>
<span id="cb22-14"><a href="#cb22-14" aria-hidden="true" tabindex="-1"></a> <span class="kw"><label</span> <span class="er">for</span><span class="ot">=</span><span class="st">"id"</span><span class="kw">></span>Topic ID<span class="kw"></label></span></span>
<span id="cb22-15"><a href="#cb22-15" aria-hidden="true" tabindex="-1"></a> <span class="kw"><input</span> <span class="er">type</span><span class="ot">=</span><span class="st">"text"</span> <span class="er">ngModel</span> <span class="er">name</span><span class="ot">=</span><span class="st">"id"</span> <span class="er">class</span><span class="ot">=</span><span class="st">"form-control"</span> <span class="er">id</span><span class="ot">=</span><span class="st">"id"</span> <span class="er">placeholder</span><span class="ot">=</span><span class="st">"Enter Topic ID..."</span> <span class="er">required</span><span class="kw">></span></span>
<span id="cb22-16"><a href="#cb22-16" aria-hidden="true" tabindex="-1"></a> <span class="kw"></div></span></span>
<span id="cb22-17"><a href="#cb22-17" aria-hidden="true" tabindex="-1"></a> <span class="kw"><div</span> <span class="er">class</span><span class="ot">=</span><span class="st">"form-group"</span><span class="kw">></span></span>
<span id="cb22-18"><a href="#cb22-18" aria-hidden="true" tabindex="-1"></a> <span class="kw"><label</span> <span class="er">for</span><span class="ot">=</span><span class="st">"name"</span><span class="kw">></span>Topic Name<span class="kw"></label></span></span>
<span id="cb22-19"><a href="#cb22-19" aria-hidden="true" tabindex="-1"></a> <span class="kw"><input</span> <span class="er">type</span><span class="ot">=</span><span class="st">"text"</span> <span class="er">ngModel</span> <span class="er">name</span><span class="ot">=</span><span class="st">"name"</span> <span class="er">class</span><span class="ot">=</span><span class="st">"form-control"</span> <span class="er">id</span><span class="ot">=</span><span class="st">"name"</span> <span class="er">placeholder</span><span class="ot">=</span><span class="st">"Enter Topic name..."</span> <span class="er">required</span><span class="kw">></span></span>
<span id="cb22-20"><a href="#cb22-20" aria-hidden="true" tabindex="-1"></a> <span class="kw"></div></span></span>
<span id="cb22-21"><a href="#cb22-21" aria-hidden="true" tabindex="-1"></a> <span class="kw"><div</span> <span class="er">class</span><span class="ot">=</span><span class="st">"form-group"</span><span class="kw">></span></span>
<span id="cb22-22"><a href="#cb22-22" aria-hidden="true" tabindex="-1"></a> <span class="kw"><label</span> <span class="er">for</span><span class="ot">=</span><span class="st">"description"</span><span class="kw">></span>Topic Description<span class="kw"></label></span></span>
<span id="cb22-23"><a href="#cb22-23" aria-hidden="true" tabindex="-1"></a> <span class="kw"><input</span> <span class="er">type</span><span class="ot">=</span><span class="st">"text"</span> <span class="er">ngModel</span> <span class="er">name</span><span class="ot">=</span><span class="st">"description"</span> <span class="er">class</span><span class="ot">=</span><span class="st">"form-control"</span> <span class="er">id</span><span class="ot">=</span><span class="st">"description"</span> <span class="er">placeholder</span><span class="ot">=</span><span class="st">"Enter Topic description..."</span> <span class="er">required</span><span class="kw">></span></span>
<span id="cb22-24"><a href="#cb22-24" aria-hidden="true" tabindex="-1"></a> <span class="kw"></div></span></span>
<span id="cb22-25"><a href="#cb22-25" aria-hidden="true" tabindex="-1"></a> <span class="kw"><div</span> <span class="er">class</span><span class="ot">=</span><span class="st">"modal-footer"</span><span class="kw">></span></span>
<span id="cb22-26"><a href="#cb22-26" aria-hidden="true" tabindex="-1"></a> <span class="kw"><button</span> <span class="er">type</span><span class="ot">=</span><span class="st">"button"</span> <span class="er">id</span><span class="ot">=</span><span class="st">"add-topic-form"</span> <span class="er">class</span><span class="ot">=</span><span class="st">"btn btn-secondary"</span> <span class="er">data-dismiss</span><span class="ot">=</span><span class="st">"modal"</span><span class="kw">></span>Close<span class="kw"></button></span></span>
<span id="cb22-27"><a href="#cb22-27" aria-hidden="true" tabindex="-1"></a> <span class="kw"><button</span> <span class="er">[disabled]</span><span class="ot">=</span><span class="st">"addForm.invalid"</span> <span class="er">type</span><span class="ot">=</span><span class="st">"submit"</span> <span class="er">class</span><span class="ot">=</span><span class="st">"btn btn-primary"</span><span class="kw">></span>Save changes<span class="kw"></button></span></span>
<span id="cb22-28"><a href="#cb22-28" aria-hidden="true" tabindex="-1"></a> <span class="kw"></div></span></span>
<span id="cb22-29"><a href="#cb22-29" aria-hidden="true" tabindex="-1"></a> <span class="kw"></form></span></span>
<span id="cb22-30"><a href="#cb22-30" aria-hidden="true" tabindex="-1"></a> <span class="kw"></div></span></span>
<span id="cb22-31"><a href="#cb22-31" aria-hidden="true" tabindex="-1"></a> <span class="kw"></div></span></span>
<span id="cb22-32"><a href="#cb22-32" aria-hidden="true" tabindex="-1"></a> <span class="kw"></div></span></span>
<span id="cb22-33"><a href="#cb22-33" aria-hidden="true" tabindex="-1"></a><span class="kw"></div></span></span></code></pre></div>
<p><strong>Snapshot of Add Topic Modal</strong></p>
<p><img src="images/addTopic.png" alt="addTopic" style="zoom:67%;" /></p>
<p><img src="images/afterAddTopic.png" alt="afterAddTopic" style="zoom:67%;" /></p>
<h3 id="update-modal-for-topic">UPDATE Modal for Topic</h3>
<p><strong><em>topic.component.ts</em></strong></p>
<div class="sourceCode" id="cb23"><pre
class="sourceCode typescript"><code class="sourceCode typescript"><span id="cb23-1"><a href="#cb23-1" aria-hidden="true" tabindex="-1"></a><span class="kw">public</span> <span class="fu">onupdateTopic</span>(topic<span class="op">:</span> Topic)<span class="op">:</span> <span class="dt">void</span> {</span>
<span id="cb23-2"><a href="#cb23-2" aria-hidden="true" tabindex="-1"></a> <span class="co">// document.getElementById('update-topic-form').click();</span></span>
<span id="cb23-3"><a href="#cb23-3" aria-hidden="true" tabindex="-1"></a> <span class="kw">this</span><span class="op">.</span><span class="at">topicService</span><span class="op">.</span><span class="fu">updateTopic</span>(topic<span class="op">,</span> topic<span class="op">.</span><span class="at">id</span>)<span class="op">.</span><span class="fu">subscribe</span>(</span>
<span id="cb23-4"><a href="#cb23-4" aria-hidden="true" tabindex="-1"></a> (response<span class="op">:</span> Topic) <span class="kw">=></span> {</span>
<span id="cb23-5"><a href="#cb23-5" aria-hidden="true" tabindex="-1"></a> <span class="bu">console</span><span class="op">.</span><span class="fu">log</span>(response)<span class="op">;</span></span>
<span id="cb23-6"><a href="#cb23-6" aria-hidden="true" tabindex="-1"></a> <span class="kw">this</span><span class="op">.</span><span class="fu">getTopics</span>()<span class="op">;</span></span>
<span id="cb23-7"><a href="#cb23-7" aria-hidden="true" tabindex="-1"></a> }<span class="op">,</span></span>
<span id="cb23-8"><a href="#cb23-8" aria-hidden="true" tabindex="-1"></a> (error<span class="op">:</span> HttpErrorResponse) <span class="kw">=></span> {</span>
<span id="cb23-9"><a href="#cb23-9" aria-hidden="true" tabindex="-1"></a> <span class="fu">alert</span>(error<span class="op">.</span><span class="at">message</span>)<span class="op">;</span></span>
<span id="cb23-10"><a href="#cb23-10" aria-hidden="true" tabindex="-1"></a> }</span>
<span id="cb23-11"><a href="#cb23-11" aria-hidden="true" tabindex="-1"></a> )<span class="op">;</span></span>
<span id="cb23-12"><a href="#cb23-12" aria-hidden="true" tabindex="-1"></a>}</span></code></pre></div>
<p><strong><em>topic.component.html</em></strong></p>
<div class="sourceCode" id="cb24"><pre
class="sourceCode html"><code class="sourceCode html"><span id="cb24-1"><a href="#cb24-1" aria-hidden="true" tabindex="-1"></a><span class="co"><!-- UPDATE Item Modal--></span></span>
<span id="cb24-2"><a href="#cb24-2" aria-hidden="true" tabindex="-1"></a><span class="kw"><div</span> <span class="er">class</span><span class="ot">=</span><span class="st">"modal fade"</span> <span class="er">id</span><span class="ot">=</span><span class="st">"updateTopicModal"</span> <span class="er">tabindex</span><span class="ot">=</span><span class="st">"-1"</span> <span class="er">role</span><span class="ot">=</span><span class="st">"dialog"</span> <span class="er">aria-labelledby</span><span class="ot">=</span><span class="st">"updateModalLabel"</span> <span class="er">aria-hidden</span><span class="ot">=</span><span class="st">"true"</span><span class="kw">></span></span>
<span id="cb24-3"><a href="#cb24-3" aria-hidden="true" tabindex="-1"></a> <span class="kw"><div</span> <span class="er">class</span><span class="ot">=</span><span class="st">"modal-dialog"</span> <span class="er">role</span><span class="ot">=</span><span class="st">"document"</span><span class="kw">></span></span>
<span id="cb24-4"><a href="#cb24-4" aria-hidden="true" tabindex="-1"></a> <span class="kw"><div</span> <span class="er">class</span><span class="ot">=</span><span class="st">"modal-content"</span><span class="kw">></span></span>
<span id="cb24-5"><a href="#cb24-5" aria-hidden="true" tabindex="-1"></a> <span class="kw"><div</span> <span class="er">class</span><span class="ot">=</span><span class="st">"modal-header"</span><span class="kw">></span></span>
<span id="cb24-6"><a href="#cb24-6" aria-hidden="true" tabindex="-1"></a> <span class="kw"><h5</span> <span class="er">class</span><span class="ot">=</span><span class="st">"modal-title"</span> <span class="er">id</span><span class="ot">=</span><span class="st">"updateModalLabel"</span><span class="kw">></span>Update Topic<span class="kw"></h5></span></span>
<span id="cb24-7"><a href="#cb24-7" aria-hidden="true" tabindex="-1"></a> <span class="kw"><button</span> <span class="er">type</span><span class="ot">=</span><span class="st">"button"</span> <span class="er">class</span><span class="ot">=</span><span class="st">"close"</span> <span class="er">data-dismiss</span><span class="ot">=</span><span class="st">"modal"</span> <span class="er">aria-label</span><span class="ot">=</span><span class="st">"Close"</span><span class="kw">></span></span>
<span id="cb24-8"><a href="#cb24-8" aria-hidden="true" tabindex="-1"></a> <span class="kw"><span</span> <span class="er">aria-hidden</span><span class="ot">=</span><span class="st">"true"</span><span class="kw">></span><span class="dv">&times;</span><span class="kw"></span></span></span>
<span id="cb24-9"><a href="#cb24-9" aria-hidden="true" tabindex="-1"></a> <span class="kw"></button></span></span>
<span id="cb24-10"><a href="#cb24-10" aria-hidden="true" tabindex="-1"></a> <span class="kw"></div></span></span>
<span id="cb24-11"><a href="#cb24-11" aria-hidden="true" tabindex="-1"></a> <span class="kw"><div</span> <span class="er">class</span><span class="ot">=</span><span class="st">"modal-body"</span><span class="kw">></span></span>
<span id="cb24-12"><a href="#cb24-12" aria-hidden="true" tabindex="-1"></a> <span class="kw"><form</span> <span class="er">#updateForm</span><span class="ot">=</span><span class="st">"ngForm"</span><span class="kw">></span></span>
<span id="cb24-13"><a href="#cb24-13" aria-hidden="true" tabindex="-1"></a> <span class="co"><!-- Making Id hidden, so that users not able to update the id --></span></span>
<span id="cb24-14"><a href="#cb24-14" aria-hidden="true" tabindex="-1"></a> <span class="kw"><input</span> <span class="er">type</span><span class="ot">=</span><span class="st">"hidden"</span> <span class="er">ngModel</span><span class="ot">=</span><span class="st">"{{updateTopic?.id}}"</span> <span class="er">name</span><span class="ot">=</span><span class="st">"id"</span> <span class="er">class</span><span class="ot">=</span><span class="st">"form-control"</span> <span class="er">id</span><span class="ot">=</span><span class="st">"id"</span> <span class="er">placeholder</span><span class="ot">=</span><span class="st">"Enter Topic ID..."</span> <span class="er">required</span><span class="kw">></span></span>
<span id="cb24-15"><a href="#cb24-15" aria-hidden="true" tabindex="-1"></a> <span class="kw"><div</span> <span class="er">class</span><span class="ot">=</span><span class="st">"form-group"</span><span class="kw">></span></span>
<span id="cb24-16"><a href="#cb24-16" aria-hidden="true" tabindex="-1"></a> <span class="kw"><label</span> <span class="er">for</span><span class="ot">=</span><span class="st">"name"</span><span class="kw">></span>Topic Name<span class="kw"></label></span></span>
<span id="cb24-17"><a href="#cb24-17" aria-hidden="true" tabindex="-1"></a> <span class="kw"><input</span> <span class="er">type</span><span class="ot">=</span><span class="st">"text"</span> <span class="er">ngModel</span><span class="ot">=</span><span class="st">"{{updateTopic?.name}}"</span> <span class="er">name</span><span class="ot">=</span><span class="st">"name"</span> <span class="er">class</span><span class="ot">=</span><span class="st">"form-control"</span> <span class="er">id</span><span class="ot">=</span><span class="st">"name"</span> <span class="er">placeholder</span><span class="ot">=</span><span class="st">"Enter Topic name..."</span> <span class="er">required</span><span class="kw">></span></span>
<span id="cb24-18"><a href="#cb24-18" aria-hidden="true" tabindex="-1"></a> <span class="kw"></div></span></span>
<span id="cb24-19"><a href="#cb24-19" aria-hidden="true" tabindex="-1"></a> <span class="kw"><div</span> <span class="er">class</span><span class="ot">=</span><span class="st">"form-group"</span><span class="kw">></span></span>
<span id="cb24-20"><a href="#cb24-20" aria-hidden="true" tabindex="-1"></a> <span class="kw"><label</span> <span class="er">for</span><span class="ot">=</span><span class="st">"description"</span><span class="kw">></span>Topic Description<span class="kw"></label></span></span>
<span id="cb24-21"><a href="#cb24-21" aria-hidden="true" tabindex="-1"></a> <span class="kw"><input</span> <span class="er">type</span><span class="ot">=</span><span class="st">"text"</span> <span class="er">ngModel</span><span class="ot">=</span><span class="st">"{{updateTopic?.description}}"</span> <span class="er">name</span><span class="ot">=</span><span class="st">"description"</span> <span class="er">class</span><span class="ot">=</span><span class="st">"form-control"</span> <span class="er">id</span><span class="ot">=</span><span class="st">"description"</span> <span class="er">placeholder</span><span class="ot">=</span><span class="st">"Enter Topic description..."</span> <span class="er">required</span><span class="kw">></span></span>
<span id="cb24-22"><a href="#cb24-22" aria-hidden="true" tabindex="-1"></a> <span class="kw"></div></span></span>
<span id="cb24-23"><a href="#cb24-23" aria-hidden="true" tabindex="-1"></a> <span class="kw"><div</span> <span class="er">class</span><span class="ot">=</span><span class="st">"modal-footer"</span><span class="kw">></span></span>
<span id="cb24-24"><a href="#cb24-24" aria-hidden="true" tabindex="-1"></a> <span class="kw"><button</span> <span class="er">type</span><span class="ot">=</span><span class="st">"button"</span> <span class="er">id</span><span class="ot">=</span><span class="st">"update-topic-form"</span> <span class="er">class</span><span class="ot">=</span><span class="st">"btn btn-secondary"</span> <span class="er">data-dismiss</span><span class="ot">=</span><span class="st">"modal"</span><span class="kw">></span>Close<span class="kw"></button></span></span>
<span id="cb24-25"><a href="#cb24-25" aria-hidden="true" tabindex="-1"></a> <span class="kw"><button</span> <span class="er">(click)</span><span class="ot">=</span><span class="st">"onupdateTopic(updateForm.value)"</span> <span class="er">data-dismiss</span><span class="ot">=</span><span class="st">"modal"</span> <span class="er">class</span><span class="ot">=</span><span class="st">"btn btn-primary"</span> <span class="kw">></span>Save changes<span class="kw"></button></span></span>
<span id="cb24-26"><a href="#cb24-26" aria-hidden="true" tabindex="-1"></a> <span class="kw"></div></span></span>
<span id="cb24-27"><a href="#cb24-27" aria-hidden="true" tabindex="-1"></a> <span class="kw"></form></span></span>
<span id="cb24-28"><a href="#cb24-28" aria-hidden="true" tabindex="-1"></a> <span class="kw"></div></span></span>
<span id="cb24-29"><a href="#cb24-29" aria-hidden="true" tabindex="-1"></a> <span class="kw"></div></span></span>
<span id="cb24-30"><a href="#cb24-30" aria-hidden="true" tabindex="-1"></a> <span class="kw"></div></span></span>
<span id="cb24-31"><a href="#cb24-31" aria-hidden="true" tabindex="-1"></a><span class="kw"></div></span></span></code></pre></div>
<p><strong>Snapshot of Update Topic Modal</strong></p>
<p><img src="images/updateTopic.png" alt="updateTopic" style="zoom:67%;" /></p>
<p><img src="images/afterUpdateTopic.png" alt="afterUpdateTopic" style="zoom:67%;" /></p>
<h3 id="delete-modal-for-topic">DELETE Modal for Topic</h3>
<p><strong><em>topic.component.ts</em></strong></p>
<div class="sourceCode" id="cb25"><pre
class="sourceCode typescript"><code class="sourceCode typescript"><span id="cb25-1"><a href="#cb25-1" aria-hidden="true" tabindex="-1"></a><span class="kw">public</span> <span class="fu">onDeleteTopic</span>(topicId<span class="op">:</span> <span class="dt">string</span>)<span class="op">:</span> <span class="dt">void</span> {</span>
<span id="cb25-2"><a href="#cb25-2" aria-hidden="true" tabindex="-1"></a> <span class="kw">this</span><span class="op">.</span><span class="at">topicService</span><span class="op">.</span><span class="fu">deleteTopic</span>(topicId)<span class="op">.</span><span class="fu">subscribe</span>(</span>
<span id="cb25-3"><a href="#cb25-3" aria-hidden="true" tabindex="-1"></a> (response<span class="op">:</span> <span class="dt">void</span>) <span class="kw">=></span> {</span>
<span id="cb25-4"><a href="#cb25-4" aria-hidden="true" tabindex="-1"></a> <span class="bu">console</span><span class="op">.</span><span class="fu">log</span>(<span class="st">"Topic Deleted : "</span> <span class="op">+</span> topicId)<span class="op">;</span></span>
<span id="cb25-5"><a href="#cb25-5" aria-hidden="true" tabindex="-1"></a> <span class="kw">this</span><span class="op">.</span><span class="fu">getTopics</span>()<span class="op">;</span></span>
<span id="cb25-6"><a href="#cb25-6" aria-hidden="true" tabindex="-1"></a> }<span class="op">,</span></span>
<span id="cb25-7"><a href="#cb25-7" aria-hidden="true" tabindex="-1"></a> (error<span class="op">:</span> HttpErrorResponse) <span class="kw">=></span> { <span class="fu">alert</span>(error<span class="op">.</span><span class="at">message</span>)<span class="op">;</span> }</span>
<span id="cb25-8"><a href="#cb25-8" aria-hidden="true" tabindex="-1"></a> )<span class="op">;</span></span>
<span id="cb25-9"><a href="#cb25-9" aria-hidden="true" tabindex="-1"></a>}</span></code></pre></div>
<p><strong><em>topic.component.html</em></strong></p>
<div class="sourceCode" id="cb26"><pre
class="sourceCode html"><code class="sourceCode html"><span id="cb26-1"><a href="#cb26-1" aria-hidden="true" tabindex="-1"></a><span class="co"><!-- DELETE Item Modal--></span></span>
<span id="cb26-2"><a href="#cb26-2" aria-hidden="true" tabindex="-1"></a><span class="kw"><div</span> <span class="er">class</span><span class="ot">=</span><span class="st">"modal fade"</span> <span class="er">id</span><span class="ot">=</span><span class="st">"deleteTopicModal"</span> <span class="er">tabindex</span><span class="ot">=</span><span class="st">"-1"</span> <span class="er">role</span><span class="ot">=</span><span class="st">"dialog"</span> <span class="er">aria-labelledby</span><span class="ot">=</span><span class="st">"deleteModalLabel"</span></span>
<span id="cb26-3"><a href="#cb26-3" aria-hidden="true" tabindex="-1"></a><span class="ot"> aria-hidden=</span><span class="st">"true"</span><span class="kw">></span></span>
<span id="cb26-4"><a href="#cb26-4" aria-hidden="true" tabindex="-1"></a> <span class="kw"><div</span> <span class="er">class</span><span class="ot">=</span><span class="st">"modal-dialog"</span> <span class="er">role</span><span class="ot">=</span><span class="st">"document"</span><span class="kw">></span></span>
<span id="cb26-5"><a href="#cb26-5" aria-hidden="true" tabindex="-1"></a> <span class="kw"><div</span> <span class="er">class</span><span class="ot">=</span><span class="st">"modal-content"</span><span class="kw">></span></span>
<span id="cb26-6"><a href="#cb26-6" aria-hidden="true" tabindex="-1"></a> <span class="kw"><div</span> <span class="er">class</span><span class="ot">=</span><span class="st">"modal-header"</span><span class="kw">></span></span>
<span id="cb26-7"><a href="#cb26-7" aria-hidden="true" tabindex="-1"></a> <span class="kw"><h5</span> <span class="er">class</span><span class="ot">=</span><span class="st">"modal-title"</span> <span class="er">id</span><span class="ot">=</span><span class="st">"deleteModalLabel"</span><span class="kw">></span>Delete Topic<span class="kw"></h5></span></span>
<span id="cb26-8"><a href="#cb26-8" aria-hidden="true" tabindex="-1"></a> <span class="kw"><button</span> <span class="er">type</span><span class="ot">=</span><span class="st">"button"</span> <span class="er">class</span><span class="ot">=</span><span class="st">"close"</span> <span class="er">data-dismiss</span><span class="ot">=</span><span class="st">"modal"</span> <span class="er">aria-label</span><span class="ot">=</span><span class="st">"Close"</span><span class="kw">></span></span>
<span id="cb26-9"><a href="#cb26-9" aria-hidden="true" tabindex="-1"></a> <span class="kw"><span</span> <span class="er">aria-hidden</span><span class="ot">=</span><span class="st">"true"</span><span class="kw">></span><span class="dv">&times;</span><span class="kw"></span></span></span>
<span id="cb26-10"><a href="#cb26-10" aria-hidden="true" tabindex="-1"></a> <span class="kw"></button></span></span>
<span id="cb26-11"><a href="#cb26-11" aria-hidden="true" tabindex="-1"></a> <span class="kw"></div></span></span>
<span id="cb26-12"><a href="#cb26-12" aria-hidden="true" tabindex="-1"></a> <span class="kw"><div</span> <span class="er">class</span><span class="ot">=</span><span class="st">"modal-body"</span><span class="kw">></span></span>
<span id="cb26-13"><a href="#cb26-13" aria-hidden="true" tabindex="-1"></a> <span class="kw"><p></span>Are you sure you want to delete topic <span class="kw"><strong></span>{{deleteTopic?.name}}<span class="kw"></strong></span>?<span class="kw"></p></span></span>
<span id="cb26-14"><a href="#cb26-14" aria-hidden="true" tabindex="-1"></a> <span class="kw"><div</span> <span class="er">class</span><span class="ot">=</span><span class="st">"modal-footer"</span><span class="kw">></span></span>
<span id="cb26-15"><a href="#cb26-15" aria-hidden="true" tabindex="-1"></a> <span class="kw"><button</span> <span class="er">type</span><span class="ot">=</span><span class="st">"button"</span> <span class="er">class</span><span class="ot">=</span><span class="st">"btn btn-secondary"</span> <span class="er">data-dismiss</span><span class="ot">=</span><span class="st">"modal"</span><span class="kw">></span>No<span class="kw"></button></span></span>
<span id="cb26-16"><a href="#cb26-16" aria-hidden="true" tabindex="-1"></a> <span class="kw"><button</span> <span class="er">(click)</span><span class="ot">=</span><span class="st">"onDeleteTopic(deleteTopic?.id)"</span> <span class="er">class</span><span class="ot">=</span><span class="st">"btn btn-danger"</span> <span class="er">data-dismiss</span><span class="ot">=</span><span class="st">"modal"</span><span class="kw">></span>Yes<span class="kw"></button></span></span>
<span id="cb26-17"><a href="#cb26-17" aria-hidden="true" tabindex="-1"></a> <span class="kw"></div></span></span>
<span id="cb26-18"><a href="#cb26-18" aria-hidden="true" tabindex="-1"></a> <span class="kw"></div></span></span>
<span id="cb26-19"><a href="#cb26-19" aria-hidden="true" tabindex="-1"></a> <span class="kw"></div></span></span>
<span id="cb26-20"><a href="#cb26-20" aria-hidden="true" tabindex="-1"></a> <span class="kw"></div></span></span>
<span id="cb26-21"><a href="#cb26-21" aria-hidden="true" tabindex="-1"></a><span class="kw"></div></span></span></code></pre></div>
<p><strong>Snapshot of Delete Topic Modal</strong></p>
<p><img src="images/deleteTopic.png" alt="deleteTopic" style="zoom:67%;" /></p>
<p><img src="images/afterDeleteTopic.png" alt="afterDeleteTopic" style="zoom:67%;" /></p>
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