安装Laravel spatie/ ErrorException后获取权限

Question

我正在尝试安装spatie/laravel-permission包，以帮助管理我在应用程序中的角色和权限。我一直遇到以下问题。根据文档，要安装Laravel permission，请运行以下命令

composer require spatie/laravel-permission

然而，当我这样做的时候，我得到了这个错误：

> @php artisan package:discover --ansi

   ErrorException  : Trying to access array offset on value of type null

  at /home/anto/encomm/projects/vendor/spatie/laravel-permission/src/PermissionServiceProvider.php:61
    57|     protected function registerModelBindings()
    58|     {
    59|         $config = $this->app->config['permission.models'];
    60| 
  > 61|         $this->app->bind(PermissionContract::class, $config['permission']);
    62|         $this->app->bind(RoleContract::class, $config['role']);
    63|     }
    64| 
    65|     protected function registerBladeExtensions()

  Exception trace:

  1   Illuminate\Foundation\Bootstrap\HandleExceptions::handleError()
      /home/anto/encomm/projects/vendor/spatie/laravel-permission/src/PermissionServiceProvider.php:61

  2   Spatie\Permission\PermissionServiceProvider::registerModelBindings()
      /home/anto/encomm/projects/vendor/spatie/laravel-permission/src/PermissionServiceProvider.php:36

  Please use the argument -v to see more details.
Script @php artisan package:discover --ansi handling the post-autoload-dump event returned with error code 1

Installation failed, reverting ./composer.json to its original content.

以下是我的composer.json文件的内容：

    "name": "laravel/laravel",
    "type": "project",
    "description": "The Laravel Framework.",
    "keywords": [
        "framework",
        "laravel"
    ],
    "license": "MIT",
    "require": {
        "php": "^7.4",
        "fideloper/proxy": "^4.0",
        "laravel/framework": "^6.2",
        "laravel/passport": "^8.2",
        "laravel/tinker": "^2.0",
        "laravel/ui": "^1.1",
        "owen-it/laravel-auditing": "^9.3",
        "sudiptpa/guid": "^1.0",
        "unisharp/laravel-filemanager": "^2.0"
    },
    "require-dev": {
        "facade/ignition": "^1.4",
        "fzaninotto/faker": "^1.4",
        "mockery/mockery": "^1.0",
        "nunomaduro/collision": "^3.0",
        "phpunit/phpunit": "^8.0"
    },
    "config": {
        "optimize-autoloader": true,
        "preferred-install": "dist",
        "sort-packages": true
    },
    "extra": {
        "laravel": {
            "dont-discover": []
        }
    },
    "autoload": {
        "psr-4": {
            "App\\": "app/"
        },
        "classmap": [
            "database/seeds",
            "database/factories"
        ]
    },
    "autoload-dev": {
        "psr-4": {
            "Tests\\": "tests/"
        }
    },
    "minimum-stability": "dev",
    "prefer-stable": true,
    "scripts": {
        "post-autoload-dump": [
            "Illuminate\\Foundation\\ComposerScripts::postAutoloadDump",
            "@php artisan package:discover --ansi"
        ],
        "post-root-package-install": [
            "@php -r \"file_exists('.env') || copy('.env.example', '.env');\""
        ],
        "post-create-project-cmd": [
            "@php artisan key:generate --ansi"
        ]
    }
}

Answer 1

在运行第一个composer require spatie/laravel-permission语句之后，您需要对文件vendor/spatie/laravel-permission/src/PermissionServiceProvider.php进行一些更改

这是第61/62行的实际代码：

$this->app->bind(PermissionContract::class, $config['permission']);
$this->app->bind(PermissionContract::class, $config['role']);

需要使用以下命令进行更改：

$this->app->bind(PermissionContract::class, isset($config['permission']));
$this->app->bind(PermissionContract::class, isset($config['role']));

更改之后，再次运行composer require spatie/laravel-permission，仅此而已。在PHP的最新版本中，必须使用isset():检查变量是否为null