前控制器模式 - 路由器是前端控制器吗？ [英] Front controller pattern - is router a front controller?

问题描述

我想了解Front Controller 应该如何的样子。从维基百科，

I'm trying to understand how a Front Controller should look like. From Wikipedia,

前端控制器模式是
中列出的几种模式目录中的软件设计模式。该模式涉及web
应用程序的设计。它提供了一个处理
请求的集中入口点。

The Front Controller pattern is a software design pattern listed in several pattern catalogs. The pattern relates to the design of web applications. It "provides a centralized entry point for handling requests."

所以，下面的代码是处理Slim中的路由前控制器？

So, is the code below that handles routes in Slim a front controller?

$app = new \Slim\Slim();
$app->get('/books/:id', function ($id) use ($app) {

    // Get all books or one book.
    $bookModel = new ...
    $bookController = new ...

    $app->render('myTemplate.php', array('id' => $id, ...));
});

$app->run();

推荐答案

提供集中的条目点，处理请求。

provides a centralized entry point for handling requests.

是的，Slim可以是某种前端控制器。它处理所有传入的请求并将它们带到正确的位置/控制器。

Yes, Slim can be some kind of a front-controller. It handles all incoming requests and brings them to the right place/controller.

不要将前端控制器与MVC模式的控制器混淆。 strong>

Do not confound the front-controller with the controller of a MVC pattern.

在您的示例中，路由是前端控制器的一部分，应该调用MVC模式的控制器。这个MVC控制器（在你的例子$ bookController中）负责评估信息，提交信息到视图并显示视图。所以你的例子应该如下所示：

In your example the route is part of the front-controller and should call the controller of your MVC pattern. This MVC-controller (in your exmaple $bookController) is responsible for evaluating information, submitinig information to the view and display the view. So your example should look like the following:

//Inside of your frontcontroller, defining the route:
$app->get("/books/:id", "bookController:displayBook");

//Inside of your MVC bookController class:
public function displayBook($id)
{
    $book = Book::find($id);
    $app->view->set("book", $book);
    $app->view->render("form_book.php");
}

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