php artisan route::list gives me an error: Trying to get property of non-object

Question

当我输入

php artisan route:list

我明白了

 Trying to get property of non-object

当我输入

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
...
}

错误消息似乎告诉我 $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
}

知道出了什么问题吗？？？

Answer 1

Auth::user() 仅 returns 有用户登录时的用户模型，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 'Trying to get property of non-object'.

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

解决该问题的一种快速方法是在使用检查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;
    ...
    }
}