common/models/OrdersProducts.php

<?php
    
    namespace common\models;
    
    use common\modules\product\models\ProductVariant;
    
    class OrdersProducts extends \yii\db\ActiveRecord
    {
        public static function tableName()
        {
            return 'orders_products';
        }
        
        public function rules()
        {
            return [
                [
                    [ 'order_id' ],
                    'required',
                ],
                //['email', 'email'],
                [
                    [
                        'product_name',
                        'name',
                        'price',
                        'count',
                        'sum_cost',
                        'mod_id',
                        'sku',
                    ],
                    'safe',
                ],
            ];
        }
        
        public function attributeLabels()
        {
            return [
                'product_name' => 'Продукт',
                'name'         => 'Вид',
                'art'          => 'Артикул',
                'cost'         => 'Цена за один',
                'count'        => 'Кол.',
                'sum_cost'     => 'Сумма',
            ];
        }
        
        public function getProductVariant()
        {
            return $this->hasOne(ProductVariant::className(), [ 'product_variant_id' => 'mod_id' ]);
        }
    }