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Example code of uniondrug/middleware

Informations about the package middleware

Uniondrug Middleware 中间件组件

基于Phalcon的uniondrug/framework项目中，增加中间件处理流程的支持。

感谢

https://github.com/limingxinleo/x-phalcon-middleware https://github.com/fastdlabs/middleware

安装

使用

修改配置文件，引入中间件组件

在app.php配置文件中增加中间件组件的注册

添加middlewares.php配置文件，定义中间件

开发中间件

创建中间件。中间件必须从Uniondrug\Middleware\Middleware继承。实现handle方法。该方法有两个参数：request是Phalcon的Phalcon\Http\Request对象，next是下一个中间件代理。 在处理过程中，可以直接返回一个Phalcon\Http\Response对象，终止后续的中间件，或者返回下一个中间件代理的处理结果（链式传递）。

中间件开发好后，需要在middleware.php配置文件中注册一个别名，在使用过程中以别名调用。

使用中间件

中间件在控制器中使用。在控制器中有两种方法定义需要使用哪些中间件。

1、在beforeExecuteRoute()方法中配置。

通过middlewareManager组件的bind方法，指派对应的中间件。

其中第一个参数是控制器本身，

第二个参数是一组中间件别名，

可选的第三个参数可以指明中间件的绑定范围： only 指只有在列表中的 action 使用该组中间件 except 指除了列表中的 action 以外的所有方法使用该组中间件 如果only/except都不指定，那么整个控制器的方法都会使用改组中间件

2.通过注解的方法定义中间件

注解Middleware定义当前控制器或者方法使用的中间别名。可以定义多个。

中间件调用的顺序

bind()方法定义超过一个中间件时，从后到先倒序执行。

比如上面例子里面的indexAction被调用时，中间件的执行顺序是：

前置调用：

后置调用

前置调用 & 后置调用

NOTE：Phalcon的Request对象不同于Psr的HttpRequest对象，它只是PHP原生超全局变量$_GET/$_POST/$_SERVER/$_REQUEST的封装，所以如果想在Middleware中对请求对象进行 改写并且让他影响后续使用，那么直接操作超全局变量。

内置中间件

组件自带了几个实用的中间件，在middleware.php配置文件中增加配置即可使用。

All versions of middleware with dependencies

PHP Build Version
Package Version
Requires uniondrug/framework Version ^2.0
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