Fix a warning when serializing metadata (#9)

This addresses warnings like...

```
Failed to save key "{key}" of type Webfactory\Bundle\PolyglotBundle\Doctrine\TranslatableClassMetadata: Cache key "..." has non-serializable Webfactory\Bundle\PolyglotBundle\Doctrine\TranslatableClassMetadata value.
```

... that occur when the Cache Driver used (in Doctrine) is the file-based implementation from symfony/cache.

.github/workflows/dependencies.yml

@@ -0,0 +1,36 @@
+name: Dependencies
+
+on:
+    push:
+        branches:
+            - master
+    pull_request:
+
+env:
+    PHP_VERSION: 7.2
+
+jobs:
+    composer-require-checker:
+        name: Check missing composer requirements
+        runs-on: ubuntu-18.04
+        steps:
+            -   uses: actions/checkout@v2
+            -   name: Konfiguriere PHP-Version und -Einstellungen im Worker-Node
+                uses: shivammathur/setup-php@v2
+                with:
+                  php-version: ${{ env.PHP_VERSION }}
+                  tools: composer:v2
+                  ini-values: variables_order=EGPCS
+            -   name: Cache Composer Dependencies
+                uses: actions/cache@v1
+                with:
+                    path: vendor/
+                    key: composer-${{ env.PHP_VERSION }}-${{ hashFiles('composer.*') }}
+                    restore-keys: |
+                        composer-${{ env.PHP_VERSION }}-${{ github.ref }}
+                        composer-${{ env.PHP_VERSION }}-
+            -   run: |
+                    composer install --no-interaction --no-scripts --no-progress --no-suggest
+                    composer show
+            -   name: ComposerRequireChecker
+                uses: docker://webfactory/composer-require-checker:2.1.0

.github/workflows/fix-cs-php.yml

@@ -0,0 +1,50 @@
+# Update this by running
+# curl https://gist.githubusercontent.com/mpdude/ca93a185bcbf56eb7e341632ad4f8263/raw/fix-cs-php.yml > .github/workflows/fix-cs-php.yml
+
+on:
+    push:
+        branches:
+            - master
+    pull_request:
+
+name: Coding Standards
+
+jobs:
+    open-pr-for-cs-violations:
+        name: PHP-CS-Fixer
+        runs-on: ubuntu-18.04
+        steps:
+
+            -   name: Checkout code
+                uses: actions/checkout@v2
+                with:
+                    ref: ${{ github.head_ref }}
+
+            -   name: Run PHP-CS-Fixer
+                uses: docker://oskarstark/php-cs-fixer-ga:2.16.7
+
+            -   name: Create PR for CS fixups
+                uses: peter-evans/create-pull-request@c7f493a8000b8aeb17a1332e326ba76b57cb83eb
+                id: create-pull-request
+                with:
+                    token: ${{ secrets.GITHUB_TOKEN }}
+                    title: Fix coding standards in ${{ github.ref }}
+                    branch: php-cs-fixer/${{ github.ref }}
+                    assignees: ${{ github.actor }}
+                    labels: php-cs-fixer
+                    body: Please merge these changes into the ${{ github.ref }} branch to fix coding standard violations.
+                    commit-message: Apply php-cs-fixer changes as of ${{ github.sha }}
+
+            -   name: Leave a notice in the discussion when fixing code in a Pull Request
+                uses: docker://mpdude/comment-on-pr:v1.2.0
+                env:
+                    GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+                if: steps.create-pull-request.outputs.pr_number # only if PR was created in the previous step
+                continue-on-error: true # continue on failure - necessary when the current branch does not have a pending PR
+                with:
+                    msg: |
+                        @${{ github.actor }} please apply the coding standard fixes from #${{ steps.create-pull-request.outputs.pr_number }}
+
+            -   name: Fail the workflow when necessary CS fixes were detected
+                run: echo "Failing workflow run because CS violations were detected." && exit 1
+                if: steps.create-pull-request.outputs.pr_number

.github/workflows/tests.yml

@@ -0,0 +1,35 @@
+name: Tests
+
+on:
+    push:
+        branches:
+            - master
+    pull_request:
+
+env:
+    PHP_VERSION: 7.2
+
+jobs:
+    PHPUnit:
+        name: PHPUnit
+        runs-on: ubuntu-18.04
+        steps:
+            -   uses: actions/checkout@v2
+            -   name: Konfiguriere PHP-Version und -Einstellungen im Worker-Node
+                uses: shivammathur/setup-php@v2
+                with:
+                  php-version: ${{ env.PHP_VERSION }}
+                  tools: composer:v2
+                  ini-values: variables_order=EGPCS
+            -   name: Cache Composer Dependencies
+                uses: actions/cache@v1
+                with:
+                    path: vendor/
+                    key: composer-${{ env.PHP_VERSION }}-${{ hashFiles('composer.*') }}
+                    restore-keys: |
+                        composer-${{ env.PHP_VERSION }}-${{ github.ref }}
+                        composer-${{ env.PHP_VERSION }}-
+            -   run: |
+                    composer install --no-interaction --no-scripts --no-progress --no-suggest
+                    composer show
+            -   run: vendor/bin/phpunit

.gitignore

@@ -1,3 +1,4 @@
 vendor/
-.idea/
 composer.lock
+phpunit.xml$
+.php_cs.cache

.php_cs.dist

@@ -0,0 +1,19 @@
+<?php
+
+return PhpCsFixer\Config::create()
+    ->setRules([
+        '@Symfony' => true,
+        '@Symfony:risky' => true,
+        'array_syntax' => array('syntax' => 'short'),
+        'no_unreachable_default_argument_value' => false,
+        'braces' => array('allow_single_line_closure' => true),
+        'heredoc_to_nowdoc' => false,
+        'phpdoc_annotation_without_dot' => false,
+    ])
+    ->setRiskyAllowed(true)
+    ->setFinder(
+        PhpCsFixer\Finder::create()
+            ->in(__DIR__)
+            ->notPath('vendor/')
+    )
+;

README.md

@@ -1,8 +1,7 @@
 # ![webfactory Logo](https://www.webfactory.de/bundles/webfactorytwiglayout/img/logo.png) WebfactoryPolyglotBundle
 
-[![Build Status](https://scrutinizer-ci.com/g/webfactory/WebfactoryPolyglotBundle/badges/build.png?b=master)](https://scrutinizer-ci.com/g/webfactory/WebfactoryPolyglotBundle/build-status/master)
-[![Code Coverage](https://scrutinizer-ci.com/g/webfactory/WebfactoryPolyglotBundle/badges/coverage.png?b=master)](https://scrutinizer-ci.com/g/webfactory/WebfactoryPolyglotBundle/?branch=master)
-[![Scrutinizer Code Quality](https://scrutinizer-ci.com/g/webfactory/WebfactoryPolyglotBundle/badges/quality-score.png?b=master)](https://scrutinizer-ci.com/g/webfactory/WebfactoryPolyglotBundle/?branch=master)
+![Tests](https://github.com/webfactory/WebfactoryPolyglotBundle/workflows/Tests/badge.svg)
+![Dependencies](https://github.com/webfactory/WebfactoryPolyglotBundle/workflows/Dependencies/badge.svg)
 
 A bundle to simplify translations for Doctrine entities.
 
@@ -263,7 +262,7 @@ this information in an attribute. This would allow each record to have its own p
 
 ## Credits, Copyright and License
 
-Copyright 2012-2017 webfactory GmbH, Bonn. Code released under [the MIT license](LICENSE).
+This Bundle was written by webfactory GmbH, Bonn, Germany. We're a software development agency with a focus on PHP (mostly [Symfony](http://github.com/symfony/symfony)). If you're a developer looking for new challenges, we'd like to hear from you!
 
 - <https://www.webfactory.de>
 - <https://twitter.com/webfactory>

composer.json

@@ -13,12 +13,19 @@
     ],
 
     "autoload": {
-        "psr-0": { "Webfactory\\Bundle\\PolyglotBundle": "src" }
+        "psr-4": { "Webfactory\\Bundle\\PolyglotBundle\\": "src" }
+    },
+    "autoload-dev": {
+        "psr-4": { "Webfactory\\Bundle\\PolyglotBundle\\Tests\\": "tests" }
     },
 
     "require": {
+        "php": "^7.2",
+        "doctrine/annotations": "^1.11",
+        "doctrine/collections": "^1.0",
+        "doctrine/persistence": "^1.3.8",
         "doctrine/orm": "~2.2",
-        "php": "^5.5|^7.0",
+        "psr/log": "^1.0",
         "symfony/config": "^2.0|^3.0|^4.0",
         "symfony/dependency-injection": "^2.0|^3.0|^4.0",
         "symfony/event-dispatcher": "^2.0|^3.0|^4.0",
@@ -27,9 +34,9 @@
 
     "require-dev": {
         "phpunit/phpunit": "^5.7",
-        "symfony/debug": "^2.8|^3.0|^4.0",
-        "symfony/phpunit-bridge": "dev-master",
-        "webfactory/doctrine-orm-test-infrastructure": "~1.0"
+        "symfony/error-handler": "^4.4",
+        "symfony/phpunit-bridge": "*",
+        "webfactory/doctrine-orm-test-infrastructure": "^1.9"
     },
 
     "config": {

phpunit.xml.dist

@@ -1,24 +1,21 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:noNamespaceSchemaLocation="http://schema.phpunit.de/3.7/phpunit.xsd"
+         xsi:noNamespaceSchemaLocation="http://schema.phpunit.de/5.7/phpunit.xsd"
          bootstrap="vendor/autoload.php"
          colors="true">
 
     <testsuites>
         <testsuite name="Bundle Test Suite">
-            <directory>src/Webfactory/Bundle/PolyglotBundle/Tests</directory>
+            <directory>tests</directory>
         </testsuite>
     </testsuites>
 
     <!-- Filter for code coverage -->
     <filter>
         <whitelist processUncoveredFilesFromWhitelist="true">
-            <directory suffix=".php">src/</directory>
+            <directory suffix=".php">src</directory>
             <exclude>
-                <directory>src/*/*Bundle/Resources</directory>
-                <directory>src/*/*Bundle/Tests</directory>
-                <directory>src/*/Bundle/*Bundle/Resources</directory>
-                <directory>src/*/Bundle/*Bundle/Tests</directory>
+                <directory>src/Resources</directory>
             </exclude>
         </whitelist>
     </filter>

src/Webfactory/Bundle/PolyglotBundle/DependencyInjection/WebfactoryPolyglotExtension.php → src/DependencyInjection/WebfactoryPolyglotExtension.php

@@ -9,19 +9,19 @@
 
 namespace Webfactory\Bundle\PolyglotBundle\DependencyInjection;
 
-use Symfony\Component\DependencyInjection\ContainerBuilder;
 use Symfony\Component\Config\FileLocator;
-use Symfony\Component\HttpKernel\DependencyInjection\Extension;
+use Symfony\Component\DependencyInjection\ContainerBuilder;
 use Symfony\Component\DependencyInjection\Loader\XmlFileLoader;
+use Symfony\Component\HttpKernel\DependencyInjection\Extension;
 
 class WebfactoryPolyglotExtension extends Extension
 {
     public function load(array $configs, ContainerBuilder $container)
     {
-        $loader = new XmlFileLoader($container, new FileLocator(__DIR__ . '/../Resources/config'));
+        $loader = new XmlFileLoader($container, new FileLocator(__DIR__.'/../Resources/config'));
         $loader->load('services.xml');
 
-        $m = array("defaultLocale" => "de_DE");
+        $m = ['defaultLocale' => 'de_DE'];
         foreach ($configs as $c) {
             $m = array_merge($m, $c);
         }