Fixes #6672: `yii\bootstrap\Dropdown` should register client event handlers

CHANGELOG.md

@@ -4,7 +4,7 @@ Yii Framework 2 bootstrap extension Change Log
 2.0.2 under development
 -----------------------
 
-- no changes in this release.
+- Bug #6672: `yii\bootstrap\Dropdown` should register client event handlers (qiangxue)
 
 
 2.0.1 December 07, 2014

Dropdown.php

@@ -60,6 +60,7 @@ class Dropdown extends Widget
     {
         echo $this->renderItems($this->items, $this->options);
         BootstrapPluginAsset::register($this->getView());
+        $this->registerClientEvents();
     }
 
     /**

Widget.php

@@ -71,12 +71,22 @@ class Widget extends \yii\base\Widget
             $view->registerJs($js);
         }
 
+        $this->registerClientEvents();
+    }
+
+    /**
+     * Registers JS event handlers that are listed in [[clientEvents]].
+     * @since 2.0.2
+     */
+    protected function registerClientEvents()
+    {
         if (!empty($this->clientEvents)) {
+            $id = $this->options['id'];
             $js = [];
             foreach ($this->clientEvents as $event => $handler) {
                 $js[] = "jQuery('#$id').on('$event', $handler);";
             }
-            $view->registerJs(implode("\n", $js));
+            $this->getView()->registerJs(implode("\n", $js));
         }
     }
 }