Fix mentioned filtering (#67)

extensions/mentions/src/Filter/MentionedFilter.php

@@ -0,0 +1,31 @@
+<?php
+
+/*
+ * This file is part of Flarum.
+ *
+ * For detailed copyright and license information, please view the
+ * LICENSE file that was distributed with this source code.
+ */
+
+namespace Flarum\Mentions\Filter;
+
+use Flarum\Filter\FilterInterface;
+use Flarum\Filter\FilterState;
+
+class MentionedFilter implements FilterInterface
+{
+    public function getFilterKey(): string
+    {
+        return 'mentioned';
+    }
+
+    public function filter(FilterState $filterState, string $filterValue, bool $negate)
+    {
+        $mentionedId = trim($filterValue, '"');
+
+        $filterState
+            ->getQuery()
+            ->join('post_mentions_user', 'posts.id', '=', 'post_mentions_user.post_id')
+            ->where('post_mentions_user.mentions_user_id', $negate ? '!=' : '=', $mentionedId);
+    }
+}

extensions/mentions/src/Listener/AddFilterByMentions.php

@@ -1,24 +0,0 @@
-<?php
-
-/*
- * This file is part of Flarum.
- *
- * For detailed copyright and license information, please view the
- * LICENSE file that was distributed with this source code.
- */
-
-namespace Flarum\Mentions\Listener;
-
-use Flarum\Event\ConfigurePostsQuery;
-use Illuminate\Support\Arr;
-
-class AddFilterByMentions
-{
-    public function handle(ConfigurePostsQuery $event)
-    {
-        if ($mentionedId = Arr::get($event->filter, 'mentioned')) {
-            $event->query->join('post_mentions_user', 'posts.id', '=', 'post_mentions_user.post_id')
-                ->where('post_mentions_user.mentions_user_id', '=', $mentionedId);
-        }
-    }
-}