yii\base\Event::hasHandlers PHP Method

Event Class Documentation Usage Examples Of yii\base\Event::hasHandlers Datei anzeigen Open project: yiisoft/yii2

hasHandlers() public static method

Note that this method will also check all parent classes to see if there is any handler attached to the named event.
public static hasHandlers ( string | object $class, string $name ) : boolean
$class string | object the object or the fully qualified class name specifying the class-level event.
$name string the event name.
return boolean whether there is any handler attached to the event. 
    public static function hasHandlers($class, $name)
    {
        if (empty(self::$_events[$name])) {
            return false;
        }
        if (is_object($class)) {
            $class = get_class($class);
        } else {
            $class = ltrim($class, '\\');
        }
        $classes = array_merge([$class], class_parents($class, true), class_implements($class, true));
        foreach ($classes as $class) {
            if (!empty(self::$_events[$name][$class])) {
                return true;
            }
        }
        return false;
    }

Usage Example

Beispiel #1
0
 public function test_MigrationEvent()
 {
     try {
         $this->cleanDb();
         $this->mockYiiApplication();
         \Yii::$app->mycfg->system->version = null;
         // to trigger migration event
         $bootstrap = new MyLibraryBootstrap();
         $bootstrap->bootstrap(\Yii::$app);
         $this->assertTrue(\yii\base\Event::hasHandlers(\app\components\Controller::class, \app\components\Controller::EVENT_BEFORE_ACTION), 'migration event for controller was not added');
     } finally {
         $this->resetConnection();
     }
 }
All Usage Examples Of yii\base\Event::hasHandlers
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