在 CakePHP 2.1 插件中使用 App::uses(而不是 App::import) [英] Using App::uses (instead of App::import) in a CakePHP 2.1 Plugin

问题描述

我正在用 CakePHP 2.1 编写一个小应用程序，我想使用 Nick Baker 的文件上传插件.我下载了 cakephp2.0 分支(我知道还没有完成)，并将它放在我的应用程序插件文件夹中.我对其进行了一些必要的修改，但我很好奇替换那些 App::import 函数调用的正确方法是什么(在 FileUploadComponent 的开头，FileUploadBehavior 和 FileUploadHelper 类)与 App:uses 函数.

I'm writing a small application in CakePHP 2.1, and I want to use Nick Baker's file upload plugin. I downloaded the cakephp2.0 branch (I know that isn't done yet), and placed it in my apps Plugin folder. I made some necessary modifications on it, but I'm curious what the right way is to replace those App::import function calls (at start of FileUploadComponent, FileUploadBehavior and FileUploadHelper classes) with the App:uses function.

它需要从 Config/file_upload_settings.php 导入 FileUploadSettings 类和从 Vendor/upload.php 导入 Uploader 类.它可以通过 require_once 函数来完成，但我确信有一种 CakePHP 方法可以做到这一点.

It needs to import the FileUploadSettings class from Config/file_upload_settings.php and the Uploader class from Vendor/upload.php. It can be done with the require_once function, but I'm sure there is a CakePHP way to do it.

推荐答案

根据 Cake 手册 App::import() 与 require_once() 的方式相当作品.据我了解，您将使用 App:uses() 加载类，使用 App:import() 加载供应商文件.

According to the Cake manual App::import() is comparable to the way require_once() works. From what I understand you would load classes using App:uses() and Vendor files using App:import().

API 文档说以下 主题:

The API documentation says the following on the subject:

过去使用 App::import('Core', $class) 加载的所有类都需要使用 App::uses() 加载指的是正确的包.这一变化为框架带来了巨大的性能提升.

All classes that were loaded in the past using App::import(‘Core’, $class) will need to be loaded using App::uses() referring to the correct package. This change has provided large performance gains to the framework.

• 该方法不再递归查找类，它严格使用App::build()
中定义的路径的值
• 将无法加载 App::import('Component', 'Component') 使用 App::uses('Component', 'Controller');.
• 不再可能使用 App::import('Lib', 'CoreClass'); 加载核心类.导入不存在的文件、提供错误的类型或包名称，或者 $name 和 $file 参数的 null 值将导致错误的返回值.
• App::import('Core', 'CoreClass') 不再受支持，请改用 App::uses() 并让类自动加载休息.
• 加载供应商文件不会在供应商文件夹中递归显示，它也不会像过去那样将文件转换为下划线.

• The method no longer looks for classes recursively, it strictly uses the values for the paths defined in App::build()
• It will not be able to load App::import('Component', 'Component') use App::uses('Component', 'Controller');.
• Using App::import('Lib', 'CoreClass'); to load core classes is no longer possible. Importing a non-existent file, supplying a wrong type or package name, or null values for $name and $file parameters will result in a false return value.
• App::import('Core', 'CoreClass') is no longer supported, use App::uses() instead and let the class autoloading do the rest.
• Loading Vendor files does not look recursively in the vendors folder, it will also not convert the file to underscored anymore as it did in the past.

迁移指南也有 关于App:uses() 的一些事情要说，通常是一个很好的起点，可以比较 2.0 的最佳实践与 1.3 及更低版本的旧方法.

The migration guide also has some things to say about App:uses() and is a good starting point in general to compare best practices for 2.0 with the older methods from 1.3 and lower.

这个相关问题处理在 Cake 2.0 中加载供应商文件，我无法验证 José Lorenzo 的声明，即 App:import() 是 require_once() 的愚蠢包装器"，也无法验证它是首选方式的声明包括文件.我能找到的关于后者的唯一参考是 编码标准 对于 Cake 贡献者，即.为 Cake 核心做出贡献的开发人员，而不是构建在该框架上的应用程序.

This related question deals with loading Vendor files in Cake 2.0, I can't verify the claim by José Lorenzo that App:import() is a "silly wrapper" for require_once(), nor the statement that it's the preferred way of including files. The only reference I could find for the latter is in the Coding Standards for Cake contributors, viz. developers contributing to the Cake core, not applications built on the framework.

编辑

假设您要导入位于 Vendor/twitter 中的 Twitter OAuth 库，主要的类文件是Vendor/twitter/twitteroauth/twitteroauth.php中的twitteroauth.php:

Let's say you want to import the Twitter OAuth library, residing in Vendor/twitter, the main class file is twitteroauth.php in Vendor/twitter/twitteroauth/twitteroauth.php:

  App::import('Vendor', 'twitteroauth', array('file' => 'twitter'.DS.'twitteroauth'.DS.'twitteroauth.php'));

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