php - 命名空间在 Laravel 4 中不起作用？

Question

好的，我正在使用 Laravel 4.1 ......我正在尝试让我的嵌套 Controller 加载..
当我之前只运行 Composer dump-autoload 的方法时，它在我的本地运行良好，但是在共享托管服务提供商上，我无法运行该命令行...

无论如何，这是我的 composer.json 文件的样子:

{
    "name": "laravel/laravel",
    "description": "The Laravel Framework.",
    "keywords": ["framework", "laravel"],
    "license": "MIT",
    "require": {
        "laravel/framework": "4.1.*",
        "laravelbook/ardent": "2.4.*",
        "loic-sharma/profiler": "1.1.*",
        "intervention/image": "dev-master",
        "mews/purifier": "dev-master"
    },
    "autoload": {
        "classmap": [
            "app/commands",
            "app/controllers",
            "app/controllers/dash",
            "app/controllers/dash/product",
            "app/models",
            "app/models/Product",
            "app/database/migrations",
            "app/database/seeds",
            "app/tests/TestCase.php"
        ],
        "psr-0": {
            "App\\Controllers": "app/controllers",
            "App\\Controllers\\Dash": "app/controllers/dash",
            "App\\Controllers\\Dash\\Product": "app/controllers/dash/product",
            "App\\Models": "app/models",
            "App\\Models\\Product": "app/models/Product"
        }
    },
    "scripts": {
        "post-install-cmd": [
            "php artisan optimize"
        ],
        "post-update-cmd": [
            "php artisan clear-compiled",
            "php artisan optimize"
        ],
        "post-create-project-cmd": [
            "php artisan key:generate"
        ]
    },
    "config": {
        "preferred-install": "dist"
    },
    "minimum-stability": "dev"
}

然后这里是一个嵌套 Controller (Controllers/dash/MediaController.php)

<?php

namespace App\Controllers\Dash;

class MediaController extends BaseController { }

然后在我的 route ，我有:

Route::group(array('prefix' => 'dash', 'before' => 'auth'), function()
{
    Route::controller('media', 'App\Controllers\Dash\MediaController');
});

但它仍然给我这个错误:

Class 'App\Controllers\Dash\MediaController' not found

Answer 1

除非您使用 PSR-4(甚至 PSR-0)，否则您必须执行

composer dump-autoload 

每次在文件夹中创建新类时。所以 Composer 将这些类添加到 vendor/composer/autoload_classmap.php文件。

查看您的 PSR-0 自动加载结构，我们可以看到您的 Controller 设置为:

"App\\Controllers": "app/controllers",

所以现在composer自动加载系统会尝试找到你的App\Controllers\Dash\MediaController在(类似)这个文件夹中的类:

/var/www/webapp/app/controllers/App/Controllers/Dash/MediaController.php

这很难，我知道，但 PSR-4 更容易理解，因为

"App\\Controllers\\": "app/controllers",

意味着您的 Controller 文件将在以下位置找到:

/var/www/webapp/app/controllers/Dash/MediaController.php