Question

我有一个专注于用户的控制器，可以拥有许多客户（通过使用数据透视表）。目前（这不起作用）这是我的控制器：

public function index()
    {
        $customer = Auth::user()->customers;
        $customerID = $customer->id;
            $shipFromShipments = shipment::where('ship_from', '=', $customerID)->get();
            $shipFromShipmentsCount = $shipFromShipments->count();

            $shipToShipments = shipment::where('ship_to','=', $customerID)->get();
            $shipToShipmentsCount = $shipToShipments->count();

            $billToShipments = shipment::where('bill_to', '=', $customerID)->get();
            $billToShipmentsCount = $billToShipments->count();

        $customersCount = $customer->count();
        return view('home', compact('customer','shipFromShipmentsCount','shipToShipmentsCount','billToShipmentsCount','customersCount'));
    }

目前，我收到此错误：

此集合实例上不存在Property [id]。

与行$customerID = $customer->id相关，显然是因为它可以返回多个实例。

我想要的是，如果用户有多个客户（比如1,3和4），那么$shipFromShipments行搜索将在“ship_from”列中查找1,3或4存在然后得到任何这些数字存在的所有行的计数。

我用单个值完成了这个，但不是多个。

- 更新dd（$ customer）

Collection {#310 ▼
  #items: array:1 [▼
    0 => customer {#309 ▼
      #fillable: array:19 [▶]
      #connection: "mysql"
      #table: null
      #primaryKey: "id"
      #keyType: "int"
      +incrementing: true
      #with: []
      #withCount: []
      #perPage: 15
      +exists: true
      +wasRecentlyCreated: false
      #attributes: array:34 [▶]
      #original: array:36 [▶]
      #changes: []
      #casts: []
      #dates: []
      #dateFormat: null
      #appends: []
      #dispatchesEvents: []
      #observables: []
      #relations: array:1 [▶]
      #touches: []
      +timestamps: true
      #hidden: []
      #visible: []
      #guarded: array:1 [▶]
      #excludedAttributes: []
      #auditEvent: null
    }
  ]
}

Answer 1

似乎您试图从数组的集合中获取单个 id 。

$customerID = $customer->id;

在上面一行中，预计它是一个单独的集合，但有一系列的集合。这就是为什么在此集合实例错误中不存在Property [id]。

确保获得单个客户对象实例。可能是以下......

$customer = Auth::user()->customer;

或使用 foreach 功能获得 customer_id

在数据库中查找多个值与Laravel中的列值相等的行

1 个答案: