指定路由规则，并路由到不同的组件 [英] Specify route rules, and route to different components

问题描述

我知道如何使用 Mason :: Plugin :: RouterSimple ，例如，给定的URL为:

I know how to to specify routes for page components using Mason::Plugin::RouterSimple, for example given a url of:

/archives/2015/07

我可以这样创建组件archives.mc:

<%class>
  route "{year:[0-9]{4}}/{month:[0-9]{2}}";
</%class>
Archives for the month of <% $.month %>/<% $.year %>

同样，我可以创建一个news.mc组件来处理以下网址:

and similarly I can create a news.mc component that will handle urls of:

/news/2012/04

很好(而且非常优雅！)，但是现在我想要的是能够处理以下URL:

and that's fine (and very elegant!) but now what I want is to be able to handle urls like the following ones:

/john/archives/2014/12
/john/news/2014/03
/peter/news/2015/09
/bill/archives/2012/06

等我知道我可以将路由规则写为:

etc. I know I can write the route rules as:

<%class>
  route "{user:[a-z]+}/archives/{year:[0-9]{4}}/{month:[0-9]{2}}", { action=> 'archives' };
  route "{user:[a-z]+}/news/{year:[0-9]{4}}/{month:[0-9]{2}}", { action=> 'news' };
</%class>

，但是请求必须由两个不同的组件处理.如何将请求路由到其他组件? Mason不会匹配archives.mc和news.mc，因为在组件名称之前有一个用户名.

but then the requests have to be handled by two different components. How can I route a request to different components? archives.mc and news.mc won't be matched by Mason because there's a username before the name of the component.

推荐答案

问题是，虽然/archives/2014/12这样的urs可以由/archives.mc组件轻松处理，但对于/john/archives/2014/12和/bill/archives/2012/06这样的网址，不清楚将存档组件放在何处.

The problem is that, while urs like /archives/2014/12 can be easily handled by an /archives.mc component, for urls like /john/archives/2014/12 and /bill/archives/2012/06 it's not clear where to put the archives component.

梅森将尝试匹配以下组件(这是简化列表，请参见

Mason will try to match the following components (it's a simplified list, please see Mason::Manual::RequestDispatch):

...
/john/archives.{mp,mc}
/john/dhandler.{mp,mc}
/john.{mp,mc}

但最后...

/dhandler.{mp,mc}

所以我的想法是在根目录中放置一个dhandler.mc组件:

So my idea is to put a dhandler.mc component in the root directory:

<%class>
  route "{user:[a-z]+}/archives/{year:[0-9]{4}}/{month:[0-9]{2}}", { action=> 'archives' };
  route "{user:[a-z]+}/news/{year:[0-9]{4}}/{month:[0-9]{2}}", { action=> 'news' };
</%class>
<%init>
  $m->comp($.action.'.mi', user=>$.user, year=>$.year, month=>$.month);
</%init>

如果该网址与第一个路由匹配，它将调用archives.mi组件:

If the url matches the first route, it will call the archives.mi component:

<%class>
  has 'user';
  has 'year';
  has 'month';
</%class>
<% $.user %>'s archives for the month of <% $.month %>/<% $.year %>

(我使用了.mi组件，因此只能在内部访问).

(I used a .mi component so it will be accessible only internally).

可以改进dhandler(更好的regexp，可以从数据库表中检查用户并拒绝请求等)

The dhandler can be improved (better regexp, can check users from a database table and deny the request, etc.)

由于我的档案和新闻组件可以接受POST/GET数据，并且由于我想接受任何数据，因此我可以通过以下方式传递所有内容:

Since my archives and news components can accept POST/GET data, and since I want to accept any data, I can just pass everything with:

 $m->comp($._action.'.mi', %{$.args});

不太老套，但看起来它确实可以正常工作.

Not too elegand, but it looks like it does its work.

这篇关于指定路由规则，并路由到不同的组件的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！