MVC request生命周期

最新推荐文章于 2023-03-20 22:55:06 发布

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本文详细描述了MVC模式下，从用户发起请求到响应返回的完整流程：用户通过web/index.php发送请求，应用加载配置并创建实例，解析路由，创建控制器，执行过滤器，如果过滤器通过则执行相应动作，动作加载数据模型，渲染视图，并将结果通过响应组件回传给用户浏览器。

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Request Lifecycle

The following diagram shows how an application handles a request.
这里写图片描述

A user makes a request to the entry script web/index.php.
The entry script loads the application configuration and creates an
application instance to handle the request.
The application resolves the requested route with the help of the
request application component.
The application creates a controller instance to handle the request.
The controller creates an action instance and performs the filters
for the action.
If any filter fails, the action is cancelled.
If all filters pass, the action is executed.
The action loads a data model, possibly from a database.
The action renders a view, providing it with the data model.
The rendered result is returned to the response application
component.
The response component sends the rendered result to the user’s
browser.