/**
* Creates data provider instance with search query applied
* @return ActiveDataProvider
*/
public function search($params)
{
$query = City::find()->joinWith(['country']);
$dataProvider = new ActiveDataProvider(['query' => $query]);
if (!($this->load($params) && $this->validate())) {
return $dataProvider;
}
$query->andFilterWhere(['id' => $this->id, 'country_id' => $this->country_id]);
$query->andFilterWhere(['like', City::tableName() . '.title', $this->title])->andFilterWhere(['like', Country::tableName() . '.title', $this->country]);
return $dataProvider;
}
