public function getProductsCategories()
{
return $this->hasMany(Categories::className(), ['id' => 'category_id'])->viaTable(CategoryProduct::tableName(), ['product_id' => 'id']);
}
/**
* @return \yii\db\ActiveQuery
*/
public function getCategoryProducts()
{
return $this->hasMany(CategoryProduct::className(), ['category_id' => 'id']);
}