Add TagWillBeSaved event

extensions/tags/src/Command/EditTagHandler.php

@@ -14,6 +14,7 @@ namespace Flarum\Tags\Command;
 use Flarum\Core\Access\AssertPermissionTrait;
 use Flarum\Tags\TagRepository;
 use Flarum\Tags\TagValidator;
+use Flarum\Tags\Event\TagWillBeSaved;
 
 class EditTagHandler
 {
@@ -79,6 +80,8 @@ class EditTagHandler
             $tag->is_restricted = (bool) $attributes['isRestricted'];
         }
 
+        event(new TagWillBeSaved($tag, $actor, $data));
+
         $this->validator->assertValid($tag->getDirty());
 
         $tag->save();

extensions/tags/src/Event/TagWillBeSaved.php

@@ -0,0 +1,45 @@
+<?php
+
+/*
+ * This file is part of Flarum.
+ *
+ * (c) Toby Zerner <toby.zerner@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Flarum\Tags\Event;
+
+use Flarum\Tags\Tag;
+use Flarum\Core\User;
+
+class TagWillBeSaved
+{
+    /**
+     * @var Tag
+     */
+    public $tag;
+
+    /**
+     * @var User
+     */
+    public $actor;
+
+    /**
+     * @var array
+     */
+    public $data;
+
+    /**
+     * @param Discussion $discussion
+     * @param User $actor
+     * @param \Flarum\Tags\Tag[] $tag
+     */
+    public function __construct(Tag $tag, User $actor, array $data)
+    {
+        $this->tag = $tag;
+        $this->actor = $actor;
+        $this->data = $data;
+    }
+}