/**
  * Creates data provider instance with search query applied
  * @return ActiveDataProvider
  */
 public function search($params)
 {
     $query = Setting::find();
     //$query->andFilterWhere(['language' => Yii::$app->language]);
     $dataProvider = new ActiveDataProvider(['query' => $query, 'pagination' => ['pageSize' => 50]]);
     // Join the entity model as a relation
     $query->joinWith(['category']);
     // A normal user is only allowed to view the 'user-defined' settings
     if (!Yii::$app->user->can('Superadmin')) {
         $query->andFilterWhere(['type' => Setting::TYPE_USER_DEFINED]);
     }
     // enable sorting for the label attribute
     $dataProvider->sort->attributes['label'] = ['asc' => ['label' => SORT_ASC], 'desc' => ['label' => SORT_DESC]];
     // enable sorting for the related column
     $dataProvider->sort->attributes['category.name'] = ['asc' => ['settings_categories.name' => SORT_ASC], 'desc' => ['settings_categories.name' => SORT_DESC]];
     $dataProvider->sort->defaultOrder = ['category.name' => SORT_ASC, 'label' => SORT_ASC];
     if (!($this->load($params) && $this->validate())) {
         return $dataProvider;
     }
     $query->andFilterWhere(['key' => $this->key]);
     $query->andFilterWhere(['like', 'label', $this->label])->andFilterWhere(['LIKE', 'settings_categories.name', $this->getAttribute('category.name')]);
     return $dataProvider;
 }