“此集合实例上不存在属性 [id]”但代码正确吗?
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【中文标题】“此集合实例上不存在属性 [id]”但代码正确吗?【英文标题】:"Property [id] does not exist on this collection instance" but correct code? 【发布时间】:2020-03-09 03:31:07 【问题描述】:我正在使用 Eloquent ORM,在用户(玩家)和房间(会话)之间具有多对多(n 到 n)关系,其中用户连接到一个房间。他们能够玩牌 (scrum),以便通过他们的牌估算来评估软件问题。
当我加载使用可选 id? 参数的视图时,它会查看我的 DB::Class 并通过参数找到房间。
问题是,当我想访问我的附加用户的 id 属性以在我的视图中显示接收到的信息时。虽然我的调试显示我收到了正确的数据,但我得到了上面提到的错误。
我的观点: "cards.blade.php"
<h1 align="center"><u>Userid</u> $currentUser->id</h1>
<h1 align="center"><u>Username:</u> $currentUser->name</h1>
<h1 align="center"><u>Your estimation is:</u> $currentUser->userValue</h1>
<h1 align="center">Last updated: $currentRoom->updated_at->diffForHumans() ?? ''</h1>
<h1 align="center">@if ($currentUser->isAdmin === 0 || null )
'You are sadly not an admin'
@else 'You are an admin'
@endif</h1>
<h1 align="center">Room Number: $currentRoom->id</h1>
“SessionController.php@getPlayerInfo”
public function getPlayerInfo($id)
$currentRoom = Session::findOrFail($id);
$currentUser = $currentRoom->users;
$tmp = $currentUser->id;
dd($currentUser);
return view('sessions.cards')
->with('currentUser', $currentUser)
->with('currentRoom', $currentRoom);
“web.php”
Route::get('play/id?', 'SessionController@getPlayerInfo')
->name('sessions.cards')
->middleware('auth');
dd($currentUser) 输出:
Collection #305 ▼
#items: array:1 [▼
0 => User #302 ▼
#fillable: array:3 [▶]
#hidden: array:2 [▶]
#casts: array:1 [▶]
#connection: "mysql"
#table: "users"
#primaryKey: "id"
#keyType: "int"
+incrementing: true
#with: []
#withCount: []
#perPage: 15
+exists: true
+wasRecentlyCreated: false
#attributes: array:10 [▼
"id" => 1
"name" => "admin"
"email" => "admin@email.com"
"email_verified_at" => null
"password" => "$2y$10$AhpAyD2NR2TW.kBYOMzTAe1kfRh73CtMhRxaGH0Bi2OrhPcSA65f."
"userValue" => null
"isAdmin" => null
"remember_token" => null
"created_at" => "2019-11-13 10:13:20"
"updated_at" => "2019-11-13 10:13:20"
]
#original: array:12 [▶]
#changes: []
#dates: []
#dateFormat: null
#appends: []
#dispatchesEvents: []
#observables: []
#relations: array:1 [▶]
#touches: []
+timestamps: true
#visible: []
#guarded: array:1 [▶]
#rememberTokenName: "remember_token"
]
【问题讨论】:
【参考方案1】:正如dd
所暗示的,您的$currentUser
包含collection
,因此它不是一条记录。您必须遍历其内容才能获得单个用户。像这样的:
@foreach ($currentUser as $user)
$user->id
@endforeach
【讨论】:
谢谢!解决了我的问题。【参考方案2】:这是一个集合。使用 foreach 之类的
@foreach($curretUser as $cuser)
<h1 align="center"><u>Userid</u> $cuser->id</h1>
<h1 align="center"><u>Username:</u> $cuser->name</h1>
<h1 align="center"><u>Your estimation is:</u> $cuser->userValue</h1>
<h1 align="center">Last updated: $currentRoom->updated_at->diffForHumans() ?? ''</h1>
<h1 align="center">@if ($cuser->isAdmin === 0 || null )
'You are sadly not an admin'
@else 'You are an admin'
@endif</h1>
<h1 align="center">Room Number: $currentRoom->id</h1>
@endforeach
【讨论】:
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