/**
  * Creates data provider instance with search query applied
  *
  * @param array $params
  *
  * @return ActiveDataProvider
  */
 public function search($params)
 {
     $query = CsProductPropertyValues::find();
     // add conditions that should always apply here
     $dataProvider = new ActiveDataProvider(['query' => $query]);
     $this->load($params);
     if (!$this->validate()) {
         // uncomment the following line if you do not want to return any records when validation fails
         // $query->where('0=1');
         return $dataProvider;
     }
     // grid filtering conditions
     $query->andFilterWhere(['id' => $this->id, 'product_property_id' => $this->product_property_id, 'property_value_id' => $this->property_value_id, 'selected_value' => $this->selected_value]);
     $query->andFilterWhere(['like', 'description', $this->description]);
     return $dataProvider;
 }