master/app/models/OrdersProducts.php

<?php

namespace app\models;

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','cost','count','sum_cost'], 'safe'],
        ];
    }    
}