Order::relations PHP Method

    public function relations()
    {
        return ['products' => [self::HAS_MANY, 'OrderProduct', 'order_id', 'order' => 'products.id ASC'], 'delivery' => [self::BELONGS_TO, 'Delivery', 'delivery_id'], 'payment' => [self::BELONGS_TO, 'Payment', 'payment_method_id'], 'status' => [self::BELONGS_TO, 'OrderStatus', 'status_id'], 'client' => [self::BELONGS_TO, 'Client', 'user_id'], 'manager' => [self::BELONGS_TO, 'User', 'manager_id'], 'couponsIds' => [self::HAS_MANY, 'OrderCoupon', 'order_id'], 'coupons' => [self::HAS_MANY, 'Coupon', 'coupon_id', 'through' => 'couponsIds']];
    }