/**
  * Creates data provider instance with search query applied
  *
  * @param array $params
  *
  * @return ActiveDataProvider
  */
 public function search($params)
 {
     $query = Products::find()->alias('Products');
     // add conditions that should always apply here
     $dataProvider = new ActiveDataProvider(['query' => $query, 'sort' => array('defaultOrder' => ['id' => 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(['Products.id' => $this->id, 'Products.base_price' => $this->base_price, 'Products.active' => $this->active]);
     if ($this->showNonCat == 1) {
         $query->joinWith('categories');
         $query->andWhere(new Expression('categories.id is NULL'));
     }
     $query->andFilterWhere(['like', 'Products.title', $this->title])->andFilterWhere(['like', 'Products.description', $this->description])->andFilterWhere(['like', 'Products.code', $this->code]);
     return $dataProvider;
 }
 /**
  * @return \yii\db\ActiveQuery
  */
 public function getProducts()
 {
     return $this->hasMany(Products::className(), ['id' => 'product_id'])->viaTable('categories_has_products', ['category_id' => 'id']);
 }
 /**
  * Finds the Products model based on its primary key value.
  * If the model is not found, a 404 HTTP exception will be thrown.
  * @param integer $id
  * @return Products the loaded model
  * @throws NotFoundHttpException if the model cannot be found
  */
 protected function findModel($id)
 {
     if (($model = Products::findOne($id)) !== null) {
         return $model;
     } else {
         throw new NotFoundHttpException('The requested page does not exist.');
     }
 }