Implement "move" permission

extensions/tags/js/bootstrap.js

@@ -35,6 +35,7 @@ app.initializers.add('categories', function() {
   // Register models.
   app.store.models['categories'] = Category;
   Discussion.prototype.category = Model.one('category');
+  Discussion.prototype.canMove = Model.prop('canMove');
 
   // Register components.
   app.postComponentRegistry['discussionMoved'] = PostDiscussionMoved;
@@ -140,7 +141,7 @@ app.initializers.add('categories', function() {
 
   // Add a control allowing the discussion to be moved to another category.
   extend(Discussion.prototype, 'controls', function(items) {
-    if (this.canEdit()) {
+    if (this.canMove()) {
       items.add('move', ActionButton.component({
         label: 'Move',
         icon: 'arrow-right',

extensions/tags/src/CategoriesServiceProvider.php

@@ -9,6 +9,7 @@ use Flarum\Extend\NotificationType;
 use Flarum\Extend\Relationship;
 use Flarum\Extend\SerializeRelationship;
 use Flarum\Extend\ApiInclude;
+use Flarum\Extend\Permission;
 
 class CategoriesServiceProvider extends ServiceProvider
 {
@@ -41,7 +42,14 @@ class CategoriesServiceProvider extends ServiceProvider
 
             new SerializeRelationship('Flarum\Api\Serializers\DiscussionSerializer', 'hasOne', 'category', 'Flarum\Categories\CategorySerializer'),
 
-            new ApiInclude(['discussions.index', 'discussions.show'], 'category', true)
+            new ApiInclude(['discussions.index', 'discussions.show'], 'category', true),
+
+            (new Permission('discussion.move'))
+                ->serialize()
+                ->grant(function ($grant, $user) {
+                    $grant->where('start_user_id', $user->id);
+                    // @todo add limitations to time etc. according to a config setting
+                })
         );
     }