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Question

我尝试从控制器而不是刀片获取循环，这是问题所在：

如果我在刀片中有这样的代码一切正常

@foreach($orders as $order)
  @php
      $data = json_decode($order->product_name, true)
  @endphp

  @php $sum = 0 @endphp
       @foreach($data as $item)
           @php $sum += $item['quantity'] @endphp
       @endforeach
  Totlal Quantity Ordered: {{$sum}}
@endforeach

但是，当我尝试将所有这些@php @foreach带入控制器并且只在我的刀片中获得简单{{$sum}}时，一切都会变得混乱。并且我为所有行保持相同的值。

这是我在控制器中的当前代码：

public function index()
    {
        $orders = Order::orderby('id', 'desc')->paginate(10);

        $allorders = Order::orderby('id', 'desc')->get();
        foreach($allorders as $order){
            $order;
        }

        $data = json_decode($order->product_name, true);


        $sum = 0;
        foreach($data as $item){
            $sum += $item['quantity'];
        }
        $sum;

        return view('admin.orders.index', compact('orders', 'sum'));
    }

PS：我的数据保存为json，每个订单只能有1个产品或其中的n个产品。

提前感谢。

更新

我在数据库列中的数据

{"37": {"id": 37, "name": "test product", "price": 456346, "quantity": 15, "attributes": [], "conditions": []}}

我的数据作为

之后的刀片中的数组

@php
  $data = json_decode($order->product_name, true)
@endphp

通过

{{dd($data)}}

array:6 [▼
  15 => array:6 [▼
    "id" => 15
    "name" => "test product"
    "price" => 157952
    "quantity" => 7
    "attributes" => []
    "conditions" => []
  ]
  29 => array:6 [▼
    "id" => 29
    "name" => "effewf"
    "price" => 24524
    "quantity" => 1
    "attributes" => []
    "conditions" => []
  ]
  30 => array:6 [▼
    "id" => 30
    "name" => "efreFR"
    "price" => 3434
    "quantity" => 1
    "attributes" => []
    "conditions" => []
  ]
  32 => array:6 [▼
    "id" => 32
    "name" => "product 18"
    "price" => 1000000
    "quantity" => 1
    "attributes" => []
    "conditions" => []
  ]
  33 => array:6 [▼
    "id" => 33
    "name" => "tyq53y5"
    "price" => 4567457
    "quantity" => 2
    "attributes" => []
    "conditions" => []
  ]
  37 => array:6 [▼
    "id" => 37
    "name" => "test product"
    "price" => 456346
    "quantity" => 3
    "attributes" => []
    "conditions" => []
  ]
]

Answer 1

你应该在结束后关闭foreach。

试试这个

public function index()
{
  $orders = Order::orderby('id', 'desc')->paginate(10);

  foreach ($orders as $key => $order) {
      $data = json_decode($order->product_name, true);  
      $sum = 0;
       foreach($data as $item){
        $sum += $item['quantity'];
       } 
       $orders[$key]->sum = $sum;                    

      }
      return view('admin.orders.index', compact('orders'));
    }

在刀片模板中

@foreach ($orders as $key => $value) 
{{ $value['sum'] }}
@endforeach

在laravel控制器中循环

更新

1 个答案: