React Product List Challenge

This is a starter project for the Lesson here: https://github.com/Make-School-Courses/FEW-2.3-Single-Page-Web-Applications/blob/master/Lessons/lesson-02.md

Getting started

Downlaod this repo.

Read the notes below then try and solve each of the challenges in the Challenges section.

Use components to your advantage for this assignment. Whenever possible make a component to simplify your work.

The starter project provides a categories array and an inventory array in inventory.js. You can import these into any component/module with:

import inventory, { categories } from './inventory'

• categories: [String] an Array of category name Strings
• inventory: [Product/Object] an Array of Objects with the following properties
  • id: Number a unique number id
  • name: String a String name of product
  • description: String a String description of product
  • price: String a String price with two decimal places
  • category: String a String category name

For example, the first product in the Array looks like this:

{
  'id':1,
  'name':'Duobam',
  'description':'Implemented even-keeled info-mediaries',
  'price':'7.77',
  'category':'Outdoors'
}

Getting functional

Besides using React you will also explore and practice functional programming concepts with Array.map(), Array.filter(), and Array.reduce.

You will use Array.map() to transform the inventory Objects into a JSX/Components to be displayed by React.

You will use Array.filter() to filter the list of products displayed by category.

The stretch challenges use Array.reduce().

Challenges

Your goal is to follow the steps below and solve the challenges.

Make a commit after solving each challenge

This challenge should take about 3 hours. Be sure to plan that amount of time to spend on the challenges here.

Getting Started

1. Fork/download/clone this Repo.
2. Post a link to the progress tracker for class.
3. npm install to install dependencies
4. npm start to run the project at http://localhost:3000

From here as you work you should see changes refresh in the browser as you save files. If there is an error you will see this in the browser.

This project was bootstrapped with Create React reference of the available scripts here.

Coding Challenges

Level 1 challenge

Display the categories and products.

1. Challenge: List all of the categories at the top of the page.

• Display the categories as buttons.
• Use Array.map() to transform the category array into an array of JSX/Components
• You can import categories into any module with import { categories } from './inventory'

1. Challenge: List all of products below the categories.

• Each Product should display with it's name, category, and price. How these are displayed is up to you.
  • If you add a class name to a JSX element use className in place of class for example <div className="product">. See the documentation for className for more information.
• You can import the inventory Array into any module with import inventory from './inventory'.
• inventory is an Array of Objects with properties: id, name, description, price, and category. See the notes above for more details.

Level 2 Challenge

Add some interaction and functionality. The goal here is to click on a category button to filter the list of products so only products in the chosen category are displayed.

1. Challenge: Clicking a category should display only products in that category.

• The parent component, that is the component that is parent to both the product list and the category list, should define the current category on this.state.
  • Define state as an object in the constructor
  • Set a property on the state object, something like: currentCategory
  • Give it a sensible default value: this.state = { currentCategory: null }
• Add an onClick handler for each category button. This should:
  • Pass the category String/name of the button to the handler.
  • Set currentCategory on state with this.setState({ currentCategory: newCategory }) or something similar.
• Use Array.filter() to display only products in inventory where the category matches. Something like:

inventory.filter((item) => {
  return item.category === this.state.currentCategory || this.state.currentCategory === null
})

Level 3 Challenges

Use components! Whenever possible you should use a component. React uses a component architecture. The component architectrure is a really good thing it makes your projects easier to manage, keeps your code DRY, and makes your code more portable.

1. Make a component that is a category button.

• Define this in a module/JS file. Something like: category-button.js
• Be sure to export this. Something like: export default CategoryButton
• Set the label and click function as props, something like: <CategoryButton label={cat} onClick={() => clickCategory(name) } />

1. Define a component that is a product.

• The product component should take in it's id, name, description, and price as props. Alternately it could take an object with these properties.
• The product component should display these bits of information in a reasonable way.

The category button component might look like this. These are inclomplete! You'll need to retool these to fit your project.

import { Component } from 'react'

class CategoryButton extends Component {
  render() {
    return <button onClick={this.props.onClick}>{this.props.label}</button>
  }
}

The product component might look like this:

import { Component } from 'react'

class Product extends Component {
  render() {
    return (
      <div>
        <h1>{this.props.name}</h1>
        <p>{this.props.name}</p>
        <p>${this.props.price}</p>
      </div>
    )
  }
}

Level 4 Challenges

Unless you went rogue, the page is probably looking pretty bland. Better add some styles!

1. Style the category buttons. Make them look like something people will want to click on.

• Use Flex box to put them all in a row. It's okay if they wrap, there are many categories.

1. Style the products in the list.

• Use CSS Grid. You can just set the number of columns with: grid-template-columns this should be enough to get all your producks in a row so to speak.

Level 5 Challenges

Handling the details. If you've got the items above worked out you'll realize the interface is not very satisfying. You can make it better!

1. Display All categories

• Add one more button to the list of category buttons. It's label should "All".
• Clicking this button should display all products.

2. We need to know which category is currently selected. The buttons should reflect.

• Define a style to make the currently selected category stand apart from the other buttons.
• When generating the category elements check the category name against this.currentCategory if the names match assign a class to that element, something like selected-category remember to use className not class!
• You'll need to take into account that the "All" button is it's own category and this category should display all the products!

Level 6 Challenges

Okay so you did all of the other challenges and you need something more to do, good for you!

1. Use Array.reduce() to get the sum of all of the prices for all Products.

• Remember the prices are stored as Strings you'll need to convert these to numbers. Something like: Number(item.price) should work.
• Display this somewhere on the page. If you got this far I don't need to add too much explaination here.

2. Using Array.reduce() again, sum the total for currently selected products. In other the sum of all the prices for the products in the currently selected category.
3. Use Array.reduce() to count the number of products in each category.

• Display count for each category as "badge" next to the category label in each category button.

Level 7 Challenge

The category buttons are useful. Currently they should display all of the items with a matching category. These buttons could be even more useful if you could select more than one category at a time!

1. Allow for selecting multiple categories. For example selecting Toys, Automotive, and Music should show all of the inventory items that match any of these three categories.
2. The category selected category buttons should display showing they are currently selected.
3. Selecting the All button should deselect the other category buttons and show all inventoty items.

Level 8 Challenge

Add a shopping cart. The cart should display a list of items that have been added to the cart. Inlcude an Add to Cart button with each inventory item.

1. Add a component that will display the shopping cart.
2. Inventory items need an add to cart button. Clicking this button should add the item to the cart.
3. The cart should display items added to the cart. If the same item is added more than once it should show the count. For example: Flexidy x 3
4. Show the price of the item in the cart.
5. Show the total of all items in the cart at the bottom of the cart component.

Some Visuals

Some people like pictures. Here are a few images showing what the project might look like when you are finished, with some notes.

The images below show all of the challenges solved including the stretch challenges. At each step you'll get one piece of the images below.

This project was bootstrapped with Create React App.

Available Scripts

In the project directory, you can run:

npm start

Runs the app in the development mode.
Open http://localhost:3000 to view it in the browser.

The page will reload if you make edits.
You will also see any lint errors in the console.

npm test

Launches the test runner in the interactive watch mode.
See the section about running tests for more information.

npm run build

Builds the app for production to the build folder.
It correctly bundles React in production mode and optimizes the build for the best performance.

The build is minified and the filenames include the hashes.
Your app is ready to be deployed!

See the section about deployment for more information.

npm run eject

Note: this is a one-way operation. Once you eject, you can’t go back!

If you aren’t satisfied with the build tool and configuration choices, you can eject at any time. This command will remove the single build dependency from your project.

Instead, it will copy all the configuration files and the transitive dependencies (Webpack, Babel, ESLint, etc) right into your project so you have full control over them. All of the commands except eject will still work, but they will point to the copied scripts so you can tweak them. At this point you’re on your own.

You don’t have to ever use eject. The curated feature set is suitable for small and middle deployments, and you shouldn’t feel obligated to use this feature. However we understand that this tool wouldn’t be useful if you couldn’t customize it when you are ready for it.

Learn More

You can learn more in the Create React App documentation.

To learn React, check out the React documentation.

Code Splitting

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Analyzing the Bundle Size

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Making a Progressive Web App

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Advanced Configuration

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Deployment

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npm run build fails to minify

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