Question

当我想更新订单时，我有一个名为Orders的表与orderItems表具有一对多关系。 orderItems表的数组值向我显示了此错误异常数组到字符串的转换，并且值在数据库中未更新虽然当我使用dd（）函数时，它将显示所有数组输入这是我的观点（订单）

@if(count($orders)>0)
 @foreach ($orders as $order)
<form action="{{route('order.update',$order->id)}}" method="post">
<input type="hidden" value="PUT" name="_method"/>
        @csrf
    <input name="cus_name" type="text"  value={{$order->customerName}}><br/>
    <input name="cus_address" type="text" value="{{$order->customerAddress}}"><br/>
    <input name="order_date" type="date"  value="{{$order->orderDate}}"><br/>  
 @if(count($orderItems)>0)
  @foreach ($orderItems as $orderItem)
    <input name="productName[]" type="text" value="{{$orderItem->ProductName}}"><br/> 
    <input name="Quantity[]" type="number"  value="{{$orderItem->Quantity}}"><br/>
    <input name="price[]" type="number"  value="{{$orderItem->price}}" ><br/> 
   @endforeach
  @endif
    <button type="submit" >update </button>                    
</form>

这是我的orderController

    public function update(Request $request, $id)
{
    $order_Data  = Order::where('id',$id)->update([
        'customerName' => $request->input('cus_name'),
        'customerAddress' => $request->input('cus_address'),
        'orderDate'  => $request->input('order_date')
    ]);
    $data=array();
    foreach ($request->productName  as $key => $value) {
            $data[]=[
                'ProductName' =>$value,
                'Quantity'    =>$request->Quantity[$key],
                'price'       =>$request->price[$key],
                'OrderID'=>$id
            ];          
    }
  //dd($data);
    OrderItem::where('id',$id)->update($data);
    return redirect(route('order.index',$id));
}

此行出现错误

OrderItem::where('id',$id)->update($data);

我试图

使用save（）方法，但不起作用
使用'ProductName' =>$request->productName[$key]代替 'ProductName' =>$value，但也不起作用

我想在按更新botton时得到这样的结果

订单1 = [ {产品1，数量1，价格1}， {产品1，数量1，价格1}， {……。} ]

任何人都可以帮助我，我会很高兴

Answer 1

尝试一次。

 public function update(Request $request, $id)
{
		$order_Data  = Order::find($id);
        $order_Data->customerName => $request->input('cus_name');
        $order_Data->customerAddress => $request->input('cus_address');
        $order_Data->orderDate  => $request->input('order_date');
		$order_Data->save();
       $order_Data->order_items()->delete();
		
   
    $data=[];
    foreach ($request->productName  as $key => $value) {
          
                $order_items = new OrderItem;
				$order_items->ProductName = $request->get("ProductName")[$key]);
                $order_items->Quantity = $request->get("Quantity")[$key]);
                $order_items->price = $request->get("price")[$key]);
                
                $order_items->save();
				return redirect(route('order.index',$id));
}

Answer 2

01。使用json_encode（）方法

@if (!string.IsNullOrWhiteSpace(Text))
{
    <div class="alert @alertClass">@Text</div>
}


@code {
    private string messageType;
    private string alertClass = "alert-info";

    [Parameter] public string Text { get; set; }

    protected override async Task OnParametersSetAsync()
    {
        await Task.Delay(2000);
        Text = "";
    }

    [Parameter]
    public string MessageType
    {
        get { return messageType; }
        set
        {
            messageType = value;
            switch (messageType)
            {
                case "Error":
                    alertClass = "alert-danger";
                    break;
                case "Warning":
                    alertClass = "alert-warming";
                    break;
                case "Success":
                    alertClass = "alert-success";
                    break;
                default:
                    break;
            }
        }
    }
}

Laravel数组输入无法在数据库中更新

2 个答案: