php artisan route::list 给我一个错误:试图获取非对象的属性

Question

当我输入时

php artisan route:list

我明白了

 Trying to get property of non-object

当我输入时

php artisan route:list -v

我明白了

Exception trace:
 () at /home/vagrant/Code/app/CategorySettings.php:31
 Illuminate\Foundation\Bootstrap\HandleExceptions->handleError() at /home/vagrant/Code/app/CategorySettings.php:31
 App\CategorySettings->getDefaultSettings() at /home/vagrant/Code/app/Http/Controllers/CategoryController.php:27
 App\Http\Controllers\CategoryController->__construct() at n/a:n/a
 ReflectionClass->newInstanceArgs() at /home/vagrant/Code/vendor/laravel/framework/src/Illuminate/Container/Container.php:776
 Illuminate\Container\Container->build() at /home/vagrant/Code/vendor/laravel/framework/src/Illuminate/Container/Container.php:627
 Illuminate\Container\Container->make() at /home/vagrant/Code/vendor/laravel/framework/src/Illuminate/Foundation/Application.php:674
 Illuminate\Foundation\Application->make() at /home/vagrant/Code/vendor/laravel/framework/src/Illuminate/Foundation/Console/RouteListCommand.php:170
 Illuminate\Foundation\Console\RouteListCommand->getControllerMiddleware() at /home/vagrant/Code/vendor/laravel/framework/src/Illuminate/Foundation/Console/RouteListCommand.php:151
 Illuminate\Foundation\Console\RouteListCommand->getMiddleware() at /home/vagrant/Code/vendor/laravel/framework/src/Illuminate/Foundation/Console/RouteListCommand.php:119
 Illuminate\Foundation\Console\RouteListCommand->getRouteInformation() at /home/vagrant/Code/vendor/laravel/framework/src/Illuminate/Foundation/Console/RouteListCommand.php:89
 Illuminate\Foundation\Console\RouteListCommand->getRoutes() at /home/vagrant/Code/vendor/laravel/framework/src/Illuminate/Foundation/Console/RouteListCommand.php:76
 Illuminate\Foundation\Console\RouteListCommand->fire() at n/a:n/a
 call_user_func_array() at /home/vagrant/Code/vendor/laravel/framework/src/Illuminate/Container/Container.php:503
 Illuminate\Container\Container->call() at /home/vagrant/Code/vendor/laravel/framework/src/Illuminate/Console/Command.php:150
 Illuminate\Console\Command->execute() at /home/vagrant/Code/vendor/symfony/console/Command/Command.php:256
 Symfony\Component\Console\Command\Command->run() at /home/vagrant/Code/vendor/laravel/framework/src/Illuminate/Console/Command.php:136
 Illuminate\Console\Command->run() at /home/vagrant/Code/vendor/symfony/console/Application.php:838
 Symfony\Component\Console\Application->doRunCommand() at /home/vagrant/Code/vendor/symfony/console/Application.php:189
 Symfony\Component\Console\Application->doRun() at /home/vagrant/Code/vendor/symfony/console/Application.php:120
 Symfony\Component\Console\Application->run() at /home/vagrant/Code/vendor/laravel/framework/src/Illuminate/Foundation/Console/Kernel.php:107
 Illuminate\Foundation\Console\Kernel->handle() at /home/vagrant/Code/artisan:35

这里是相关代码

public function getDefaultSettings()
{
    $user = Auth::user();
    $categorySetting = $user->settings;   // <- line 31
...
}

错误信息似乎告诉我 $user 有问题 问题是当我添加 $categorySetting 或 $user 时，它会给我正确的对象...

    User {#418 ▼
  #table: "users"
  #fillable: array:16 [▶]
  #hidden: array:2 [▶]
  #connection: null
  #primaryKey: "id"
  #perPage: 15
  +incrementing: true
  +timestamps: true
  #attributes: array:20 [▶]
  #original: array:20 [▶]
  #relations: array:1 [▶]
  #visible: []
  #appends: []
  #guarded: array:1 [▶]
  #dates: []
  #dateFormat: null
  #casts: []
  #touches: []
  #observables: []
  #with: []
  #morphClass: null
  +exists: true
  +wasRecentlyCreated: false
}

知道哪里出了问题吗？？？

Answer 1

Auth::user() 仅在有用户登录时返回 User 模型，因此当您在浏览器上执行 dd 时，将返回您的用户。

但是，当您从 cli 调用 route:list 时，$user 为空，因此“尝试获取非对象的属性”。

您需要弄清楚为什么 route:list 调用 getDefaultSettings()。我的猜测是您正在调用该函数的 routes.php 文件中执行某些操作。

解决该问题的一种快速方法是在使用 check 方法对用户模型执行任何其他操作之前检查是否有用户登录:

public function getDefaultSettings()
{
    if (Auth::check()) {
        $user = Auth::user();
        $categorySetting = $user->settings;
    ...
    }
}