/**
  * @return array the attribute labels for this model
  */
 public function attributeLabels()
 {
     return array_merge(parent::attributeLabels(), array('year' => Yii::t('FilterForm', 'Year'), 'quality' => Yii::t('FilterForm', 'Quality'), 'rating' => Yii::t('FilterForm', 'Minimum rating'), 'director' => Yii::t('FilterForm', 'Director')));
 }