Add title and description meta tags (#72)

extensions/tags/js/src/forum/addTagFilter.js

@@ -23,8 +23,14 @@ export default function() {
   extend(IndexPage.prototype, 'view', function(vdom) {
     const tag = this.currentTag();
 
+    if (tag) vdom.attrs.className += ' IndexPage--tag'+tag.id();
+  });
+
+  extend(IndexPage.prototype, 'config', function() {
+    const tag = this.currentTag();
+
     if (tag) {
-      vdom.attrs.className += ' IndexPage--tag'+tag.id();
+      app.setTitle(tag.name());
     }
   });
 

extensions/tags/js/src/forum/components/TagsPage.js

@@ -84,4 +84,11 @@ export default class TagsPage extends Page {
       </div>
     );
   }
+
+  config(...args) {
+    super.config(...args);
+
+    app.setTitle(app.translator.trans('flarum-tags.forum.meta.tags_title'));
+    app.setTitleCount(0);
+  }
 }

extensions/tags/src/Content/Tag.php

@@ -14,6 +14,7 @@ use Flarum\Api\Controller\ListDiscussionsController;
 use Flarum\Frontend\Document;
 use Flarum\Tags\TagRepository;
 use Flarum\User\User;
+use Illuminate\Contracts\Translation\Translator;
 use Illuminate\Contracts\View\Factory;
 use Illuminate\Support\Arr;
 use Psr\Http\Message\ServerRequestInterface as Request;
@@ -35,15 +36,23 @@ class Tag
      */
     protected $tags;
 
+    /**
+     * @var Translator
+     */
+    protected $translator;
+
     /**
      * @param Client $api
      * @param Factory $view
+     * @param TagRepository $tags
+     * @param Translator $translator
      */
-    public function __construct(Client $api, Factory $view, TagRepository $tags)
+    public function __construct(Client $api, Factory $view, TagRepository $tags, Translator $translator)
     {
         $this->api = $api;
         $this->view = $view;
         $this->tags = $tags;
+        $this->translator = $translator;
     }
 
     public function __invoke(Document $document, Request $request)
@@ -71,6 +80,12 @@ class Tag
 
         $apiDocument = $this->getApiDocument($actor, $params);
 
+        $document->title = $tag->name;
+        if ($tag->description) {
+            $document->meta['description'] = $tag->description;
+        } else {
+            $document->meta['description'] = $this->translator->trans('flarum-tags.forum.meta.tag_description', ['{tag}' => $tag->name]);
+        }
         $document->content = $this->view->make('tags::frontend.content.tag', compact('apiDocument', 'page', 'tag'));
         $document->payload['apiDocument'] = $apiDocument;
 

extensions/tags/src/Content/Tags.php

@@ -14,6 +14,7 @@ use Flarum\Frontend\Document;
 use Flarum\Http\UrlGenerator;
 use Flarum\Settings\SettingsRepositoryInterface;
 use Flarum\Tags\TagRepository;
+use Illuminate\Contracts\Translation\Translator;
 use Illuminate\Contracts\View\Factory;
 use Illuminate\Support\Arr;
 use Psr\Http\Message\ServerRequestInterface as Request;
@@ -35,6 +36,11 @@ class Tags
      */
     protected $tags;
 
+    /**
+     * @var Translator
+     */
+    protected $translator;
+
     /**
      * @var SettingsRepositoryInterface
      */
@@ -49,15 +55,23 @@ class Tags
      * @param Client $api
      * @param Factory $view
      * @param TagRepository $tags
+     * @param Translator $translator
      * @param SettingsRepositoryInterface $settings
      * @param UrlGenerator $url
      */
-    public function __construct(Client $api, Factory $view, TagRepository $tags, SettingsRepositoryInterface $settings, UrlGenerator $url)
+    public function __construct(
-    {
+        Client $api,
+        Factory $view,
+        TagRepository $tags,
+        Translator $translator,
+        SettingsRepositoryInterface $settings,
+        UrlGenerator $url
+    ) {
         $this->api = $api;
         $this->view = $view;
         $this->tags = $tags;
         $this->settings = $settings;
+        $this->translator = $translator;
         $this->url = $url;
     }
 
@@ -77,6 +91,8 @@ class Tags
             ];
         });
 
+        $document->title = $this->translator->trans('flarum-tags.forum.meta.tags_title');
+        $document->meta['description'] = $this->translator->trans('flarum-tags.forum.meta.tags_description');
         $document->content = $this->view->make('tags::frontend.content.tags', compact('primaryTags', 'secondaryTags', 'children'));
         $document->canonicalUrl = $defaultRoute === '/tags' ? $this->url->to('forum')->base() : $request->getUri()->withQuery('');