Laravel 8:Property [Name] 在此集合实例上不存在

Question

我正在使用 Laravel8。下面是控制器中用于查询的代码

 $Applications = Applications::where('applications.Id', $id)
->select(DB::raw("applications.*,attachments.*,attachmentdetails.*"))
 ->leftjoin('attachments','applications.Id', '=', 'attachments.application_id')
->leftjoin('attachmentdetails','attachments.id', '=', 'attachmentdetails.attachmentId') 
->get();

这是 result:In 我能找到的结果 Name

#original: array:24 [▼
        "Id" => 1
        "id" => 1
        "Name" => "test"
        "Lastname" => "k"
        "Address" => "mansoura"
        "Email" => "test@abc.com"
        "Nationality" => "Austria"
        "Place_of_birth" => "qa"
        "Country_of_residence" => "Qatar"
        "DOB" => "2021-10-12"
        "Workplace" => "austria"
        "CV" => "desrts_1634628674.jpg"
        "phone_number" => 342343
        "photo" => "waterfall_1634628674.jpg"
        "ID_attachment" => "logo (2)_1634628674.png"
        "AttachmentTypeId" => 1
        "status" => 1
        "updated_at" => "2021-10-19 07:31:14"
        "created_at" => "2021-10-19 07:31:14"
        "application_id" => "1"
        "attachmentTypeId" => 1
        "attachmentId" => 1
        "applicationId" => "1"
        "attachment" => "I CAN READ HEAD (1).pdf"
      ]

这是查看页面中的代码：

{{$Applications->Name}}

但在视图中出现错误：

Property [Name] does not exist on this collection instance.

我在执行查询时得到结果..请帮助

Answer 1

当您使用查询生成器的 get 方法时，您会收到 Collection 个结果。

如果要从字面上理解您对 table 的评论，则您正在尝试访问 Collection 结果，就好像它是一条记录一样。

如果您遍历 $Applications，您将可以访问每一个，然后您的属性将存在。在 Blade 中执行此操作的一种方法是使用 @foreach 循环；我会让你看看如何使用它。

或者，如果您只想检索一个应用程序而没有 Collection，那么您可以使用 first() 而不是 get()，您将获得第一个匹配记录。

Laravel 8:Property [Name] 在此集合实例上不存在

Laravel 8:Property [Name] does not exist on this collection instance

laravel-8