Added translation support for twig templates

See https://twig-extensions.readthedocs.io/en/latest/i18n.html for documentation

2 files changed, 63 insertions, 4 deletions

diff --git a/src/Renderer/Twig/Extensions/Translation.php b/src/Renderer/Twig/Extensions/Translation.php
new file mode 100644
index 00000000..63f9800e
--- /dev/null
+++ b/src/Renderer/Twig/Extensions/Translation.php
@@ -0,0 +1,57 @@
+<?php
+
+namespace Engelsystem\Renderer\Twig\Extensions;
+
+use Engelsystem\Helpers\Translator;
+use Twig_Extension as TwigExtension;
+use Twig_Extensions_TokenParser_Trans as TranslationTokenParser;
+use Twig_Filter as TwigFilter;
+use Twig_Function as TwigFunction;
+use Twig_TokenParserInterface as TwigTokenParser;
+
+class Translation extends TwigExtension
+{
+    /** @var Translator */
+    protected $translator;
+
+    /** @var TranslationTokenParser */
+    protected $tokenParser;
+
+    /**
+     * @param Translator             $translator
+     * @param TranslationTokenParser $tokenParser
+     */
+    public function __construct(Translator $translator, TranslationTokenParser $tokenParser)
+    {
+        $this->translator = $translator;
+        $this->tokenParser = $tokenParser;
+    }
+
+    /**
+     * @return array
+     */
+    public function getFilters()
+    {
+        return [
+            new TwigFilter('trans', [$this->translator, 'translate']),
+        ];
+    }
+
+    /**
+     * @return TwigFunction[]
+     */
+    public function getFunctions()
+    {
+        return [
+            new TwigFunction('__', [$this->translator, 'translate']),
+        ];
+    }
+
+    /**
+     * @return TwigTokenParser[]
+     */
+    public function getTokenParsers()
+    {
+        return [$this->tokenParser];
+    }
+}
diff --git a/src/Renderer/TwigServiceProvider.php b/src/Renderer/TwigServiceProvider.php
index 4a5b1de3..0f453989 100644
--- a/src/Renderer/TwigServiceProvider.php
+++ b/src/Renderer/TwigServiceProvider.php
@@ -6,6 +6,7 @@ use Engelsystem\Container\ServiceProvider;
 use Engelsystem\Renderer\Twig\Extensions\Config;
 use Engelsystem\Renderer\Twig\Extensions\Globals;
 use Engelsystem\Renderer\Twig\Extensions\Session;
+use Engelsystem\Renderer\Twig\Extensions\Translation;
 use Engelsystem\Renderer\Twig\Extensions\Url;
 use Twig_Environment as Twig;
 use Twig_LoaderInterface as TwigLoaderInterface;
@@ -14,10 +15,11 @@ class TwigServiceProvider extends ServiceProvider
 {
     /** @var array */
     protected $extensions = [
-        'config'  => Config::class,
-        'globals' => Globals::class,
-        'session' => Session::class,
-        'url'     => Url::class,
+        'config'      => Config::class,
+        'globals'     => Globals::class,
+        'session'     => Session::class,
+        'url'         => Url::class,
+        'translation' => Translation::class,
     ];
 
     public function register()