如何在 Laravel 5.1 中自动加载自定义类? [英] How can I autoload a custom class in Laravel 5.1?

问题描述

我在 app 文件夹中创建了一个 library 文件夹来添加我自己的类.

I've created a library folder within the app folder to add my own classes.

这是app/library/helper.php文件的内容:

<?php

namespace Library;

class MyHelper
{
    public function v($arr)
    {
        var_dump($arr);
    }
}

我将命名空间添加到 composer.json:

I added the namespace to composer.json:

然后我跑了

$ composer dump-autoload

但它似乎没有任何影响.

but it does not seem to have any effects.

文件

• vendor/composer/autoload_psr4.php
• vendor/composer/autoload_classmap.php

没有改变.

如果我尝试创建一个MyHelper的实例，Laravel会报如下错误:

If I try to create an instance of MyHelper, Laravel reports the following error:

我不确定我做错了什么.

I'm not sure what I am doing wrong.

推荐答案

你的自动加载配置几乎不错，但你有

Your autoloading configuration is almost good, but you have

• 命名空间错误
• 路径错误

要解决此问题，请调整您的自动加载配置:

To fix the problem, adjust your autoloading configuration:

{
    "autoload": {
        "classmap": [
            "database"
        ],
        "psr-4": {
            "App\": "app/"
        }
    }
}

然后将目录/library重命名为/Library(注意大小写).

Then rename the directory /library to /Library (note the case).

然后将文件/app/Library/helper.php 重命名为/app/Library/MyHelper.php(注意类名应该如何与文件名匹配).

Then rename the file /app/Library/helper.php to /app/Library/MyHelper.php (note how class name should match the file name).

然后调整 /app/Library/MyHelper 提供的类的命名空间以匹配 PSR-4 前缀(以及项目的结构)，以及类的用法:

Then adjust the namespace of the class provided by /app/Library/MyHelper to match the PSR-4 prefix (and thus the structure of your project), as well as usages of the class:

namespace AppLibrary;

class MyHelper 
{
    public function v($arr)
    {
        var_dump($arr);
    }
}

参考:

• http://www.php-fig.org/psr/psr-4/

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