Ticket #22750: 22750.diff

Index: wp-includes/js/media-models.js
===================================================================
--- wp-includes/js/media-models.js      (revision 23056)
+++ wp-includes/js/media-models.js      (working copy)
@@ -263,6 +263,7 @@
                        // Overload the `delete` request so attachments can be removed.
                        // This will permanently delete an attachment.
                        } else if ( 'delete' === method ) {
+                               this.destroyed = true;
                                options = options || {};
                                options.context = this;
                                options.data = _.extend( options.data || {}, {
@@ -270,7 +271,10 @@
                                        id:       this.id,
                                        _wpnonce: this.get('nonces')['delete']
                                });
-                               return media.ajax( options );
+
+                               return media.ajax( options ).fail( function() {
+                                       this.destroyed = false;
+                               });
                        }
                },
 
@@ -401,7 +405,11 @@
                        this.reset( this._source.filter( this.validator, this ) );
                },
 
+               validateDestroyed: false,
+
                validator: function( attachment ) {
+                       if ( ! this.validateDestroyed && attachment.destroyed )
+                               return false;
                        return _.all( this.filters, function( filter, key ) {
                                return !! filter.call( this, attachment );
                        }, this );