Laravel - 此集合实例上不存在属性 [注释]

Question

我对 laravel 模型关系有疑问。代码如下：

路线：

Route::get('/customers','Back\CustomerController@index')->name('admin.customer');

模型\Customer.php：

class Customer extends Model{
  public function getData(){
    return $this->hasMany('App\Models\Datapanel','name','name');
  }
}

模型\Datapanel.php：

class Datapanel extends Model{
   //
}

客户控制器.php：

class CustomerController extends Controller{
  public function index(){
    $customers=Customer::orderBy('created_at','desc')->get();
    return view('back.customer',compact('customers'));
  }
}

customer.blade.php：

@foreach ($customers as $customer)
<div class="tab-pane" id="{{$customer->name}}" role="tabpanel">
    {{$customer->getData}} //this line working and calling all data of the same name, but in array format.
    {{$customer->getData->comment}} //this line is what I want, but it doesn't work and gives the error Property [comment] does not exist on this collection instance
    {{$customer->getData->first()->comment}} //this line working, but calling first data and i want all the data of the same name.
    {{$customer->getData->all()->comment}} //I wish there was something like but it donesn't work.
</div>
@endforeach

Answer 1

由于getData 返回一个 HasMany 关系，它将是一个集合而不是单个记录。所以需要遍历集合来显示数据。见下文

@foreach ($customers as $customer)
<div class="tab-pane" id="{{$customer->name}}" role="tabpanel">

    <!-- Loop over each record in $customer->getData -->
    @foreach($customer->getData as $data)
        {{ $data->comment }} 
    @endforeach

</div>
@endforeach