错误：在文件 Http\Controllers\TaskController.php 中调用成员函数 tasks() 为空

Question

我已经配置了

JWT

laravel

和

postman

，我有两个表

users

和

tasks

，它们之间的关系

hasMany

BelongsTo

在这里：

task.php

public function user() {
         return $this->belongsTo(User::class);
     }

User.php

public function tasks()
     {
         return $this->hasMany(Task::class);
     }

和一个返回

tasks

列表的函数

Taskcontroller.php

public function index()
{
     $tasks = $this->user->tasks()->get(['title', 'description'])->toArray();

     return $tasks;
}

但它给了我错误：

Error: Call to a member function tasks() on null in file C:\wamp64\www\jwtestb\app\Http\Controllers\TaskController.php on line 30

Answer 1

$this->user

不存在。如果您想获得经过身份验证的用户，您可以使用

Auth

门面或

Request

对象。

use Illuminate\Support\Facades\Auth; // or use Auth;

public function index()
{
     $tasks = Auth::user()->tasks()->get(['title', 'description'])->toArray();

     return $tasks;
}

public function index()
{
     $tasks = auth()->user()->tasks()->get(['title', 'description'])->toArray();

     return $tasks;
}

public function index()
{
     $tasks = request()->user()->tasks()->get(['title', 'description'])->toArray();

     return $tasks;
}

use Illuminate\Http\Request;

public function index(Request $request)
{
     $tasks = $request->user()->tasks()->get(['title', 'description'])->toArray();

     return $tasks;
}