Yarik / artbox1

  <?php

      namespace common\modules\product\models;
      
      use yii\base\Model;
      use yii\data\ActiveDataProvider;

      /**

       * ProductUnitSearch represents the model behind the search form about
       * `common\modules\product\models\ProductUnit`.

       */

      class ProductUnitSearch extends ProductUnit

      {

          public $title;

          
          public function behaviors()
          {
              return [];
          }
          
          public function attributeLabels()
          {
              $labels = parent::attributeLabels();
              $new_labels = [

                  'title' => \Yii::t('product', 'Product Unit Name'),

              ];
              return array_merge($labels, $new_labels);
          }
          
          /**
           * @inheritdoc
           */
          public function rules()
          {
              return [
                  [

                      [ 'title' ],

                      'safe',
                  ],
                  [

                      [ 'id' ],

                      'integer',
                  ],
                  [
                      [ 'is_default' ],
                      'boolean',
                  ],
              ];
          }
          
          /**
           * @inheritdoc
           */
          public function scenarios()
          {
              // bypass scenarios() implementation in the parent class
              return Model::scenarios();
          }
          
          /**
           * Creates data provider instance with search query applied
           *
           * @param array $params
           *
           * @return ActiveDataProvider
           */
          public function search($params)
          {

              $query = ProductUnit::find()
                                  ->joinWith('lang');

              
              // add conditions that should always apply here
              

              $dataProvider = new ActiveDataProvider(
                  [
                      'query' => $query,
                      'sort'  => [
                          'attributes' => [
                              'id',
                              'is_defaut',
                              'title' => [
                                  'asc'  => [ 'product_unit_lang.title' => SORT_ASC ],
                                  'desc' => [ 'product_unit_lang.title' => SORT_DESC ],
                              ],

                          ],
                      ],

                  ]
              );

              
              $this->load($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,
                      'is_default' => $this->is_default,
                  ]
              )
                    ->andFilterWhere(
                        [
                            'ilike',
                            'product_unit_lang.title',
                            $this->title,
                        ]
                    );

              return $dataProvider;
          }

      }