在RESTful路由中获取基于“名称”的URL，而不是基于ID的URL [英] getting a 'name' based URL in RESTful routes instead of an id based url

问题描述

如果我为控制器图库实现RESTful路由，如下所示：

If I implement RESTful routing for a controller 'galleries' like as follows:

map.resources :galleries 

默认情况下，此控制器的显示网址为：

By default the show url for this controller would be:

/galleries/:id 

请求/ galleries / 1等。

which would respond to any requests to /galleries/1 etc.

如果我在数据库中有一个带有名称属性且值为肖像的画廊记录，该怎么办。
我可以做以下相同的事情：

What if I had a gallery record in the database with a 'name' attribute with value 'portraits'. Could I do the same as follows:

/galleries/portraits 

而不是做

/galleries/1 ?

推荐答案

在您的画廊中模型，添加一个 #to_param 方法，该方法返回URL中想要的内容（在这种情况下，为 name ）。在您的控制器中，您仍然可以通过 params [：id] 访问该值，并且可能必须使用 Gallery＃find_by_name 而不是 Gallery＃find 。

In your Gallery model, add a #to_param method that returns what you want in the URL (in this case, name). In your controller, you still access the value through params[:id] and you'll probably have to use Gallery#find_by_name instead of Gallery#find.

只要您使用提供的助手（ gallery_path 等），您的网址应该很漂亮。

As long as you use the provided helpers (gallery_path, etc.), your URLs should be pretty.

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