如何检查添加到购物车的产品是否有免费送货相互冲突

Question

我正在与 Laravel 5.8 建立一个网上商店，在这个项目中，我为一些产品设置了免费送货。

另外还有两种包邮：城市包邮 & 国家包邮.

而且我还需要定义，如果用户选择了具有不同交付类型的多种产品（例如，一种产品具有“城市免费送货”而另一种具有“国家免费送货”），则消息必须显示说：

“该产品免费送货，但与您选择的其他产品的服务区域冲突。”

因此 carts.blade.php 页面应该如下所示：（预期结果）

但现在看起来像这样：

但这是错误的，因为这将检查单个产品是否有 city_free_delivery 和 country_free_delivery。所以它returns没什么。

所以我的问题是，我如何检查是否 prd_delivery 的产品已插入购物车，是否有不同的送货区域服务？

这也是CartsController.php的index方法：

public function index()
    {
        $cart = $this->getOpenCartOrCreate();

        // Get the all of send types and set the first send type as default for this cart
        $submit_type = ProductSubmit::query()->get();

        if(!empty($submit_type)) {
            Cart::whereCrt_id($cart->crt_id)->where('crt_completed', 0)->where('crt_send_type', 0)->update(['crt_send_type' => $submit_type[0]->id]);
        }

        $cart = $this->getOpenCartOrCreate();

        $foundOrder = Cart::select('crt_content')->whereCrtId($cart->crt_id)->latest()->first();
        $foundOrder = json_decode($foundOrder->crt_content);

        if ($foundOrder != null) {
            foreach ($foundOrder as $key => $value) {
                $prds[] = [
                    Product::with('uploaded')->wherePrdId($value->id)->select('*')->first(),
                    $value->quantity,
                    $value->price
                ];
            }
        } else {
            $prds = [];
        }
        $cartPrice = json_decode($this->computeAndUpdateCartPrice())->cartPrice;
        $cartDiscountedPrice = json_decode($this->computeAndUpdateCartPrice())->cartDiscountedPrice;
        $sendPrice = $this->computeSendPackagePrice($cart->crt_send_type);

        if (auth()->check()) {
            $user = auth()->user()->usr_id;

            $discounts = CouponUserUses::where('cart_id', $cart->crt_id)->where('user_id', $user)->get();
            foreach ($discounts as $key => $discount) {
                $discountedPrice = 0;

                if ($discount->coupon_end_date < time()) {
                    $user_id = auth()->user()->usr_id;
                    $user_uses = CouponUserUses::where('id', $discount->id)->first();
                    $coupon_id = $user_uses->coupon_id;
                    $cart = $this->getOpenCartOrCreate();
                    $foundOrder = Cart::select('crt_content')->whereCrtId($cart->crt_id)->where('crt_completed', 0)->first();
                    $foundOrder = json_decode($foundOrder->crt_content);
                    $discountedTotal = 0;
                    if ($foundOrder != null) {
                        foreach ($foundOrder as $key => $value) {
                            if ($value->coupon == $coupon_id) {
                                $foundOrder[ $key ]->discounted = $value->price;
                                $foundOrder[ $key ]->coupon = 0;
                            }
                        }
                        Cart::whereCrt_id($cart->crt_id)->where('crt_completed', 0)->update(['crt_content' => json_encode($foundOrder)]);
                    }
                    $user_uses->delete();

                }else {
                    foreach ($foundOrder as $index => $value) {
                        if ($discount->coupon_id == $value->coupon) {
                            $discountedPrice += ($value->price - $value->discounted) * $value->quantity;
                        }
                    }
                    $discount['discountedPrice'] = $discountedPrice;
                }
            }
            $membershipDiscount = [
                'type' => MembershipPlan::userTypePersian(),
                'discounted' => MembershipPlan::calculateProductPrice($cartPrice)
            ];
        } else {
            $discounts = [];
            $membershipDiscount = [];
        }

        return view('frontend.shop.carts.index', compact('prds', 'cartPrice', 'cartDiscountedPrice', 'cart', 'submit_type', 'sendPrice', 'discounts', 'membershipDiscount'));
    }

Answer 1

如果我没理解错的话，您想在所有有冲突的产品上显示一条消息。所以我根据你的代码做了一些改变来做到这一点：

$conflicting = false;
$free_delivery = '';

if ($foundOrder != null) {
  foreach ($foundOrder as $key => $value) {
    $product = Product::with('uploaded')->wherePrdId($value->id)->select('*')->first();

    // Just put a check here in case you have some non-free delivery types
    if ($product->prd_delivery == 'city_free_delivery' || $product->prd_delivery == 'country_free_delivery') {

      // Check if cart already have free delivery item and it conflict with current looping product or not
      if ($free_delivery && $free_delivery != $product->prd_delivery) {
        $conflicting = true;
      }

      $free_delivery = $product->prd_delivery;
    }

    $prds[] = [
       $product,
       $value->quantity,
       $value->price
    ];
  }
} else {
    $prds = [];
}
...
return view('frontend.shop.carts.index', compact('conflicting', ...));

然后在视图中（我不知道你是如何渲染这些产品的，所以下面的代码只是为了举例）：

@foreach($prds as $prd)
    @if($conflicting && ($prd[0]->prd_delivery == 'city_free_delivery' || $prd[0]->prd_delivery == 'country_free_delivery'))
        <p style="color:red;">
            This product has free delivery but it conflicts the service area with other products that you have chosen.
        </p>
    @endif
@endforeach

如何检查添加到购物车的产品是否有免费送货相互冲突

How to check if products added to cart have free deliveries conflict with each other

php

laravel

e-commerce

shopping-cart

laravel-5.8