Rails 3链接或按钮在控制器中执行操作 [英] Rails 3 link or button that executes action in controller

问题描述

在RoR 3中，我只想有一个链接/按钮激活控制器中的某些操作/方法。具体来说，如果我点击页面上的update_specs链接，它应该转到我的产品控制器中的update_specs方法。我找到了在此网站上执行此操作的建议：

In RoR 3, I just want to have a link/button that activates some action/method in the controller. Specifically, if I click on a 'update_specs' link on a page, it should go to 'update_specs' method in my products controller. I've found suggestions to do this on this site:

link_to "Update Specs", :controller => :products, :action => :update_specs

但是，当我点击此链接时会收到以下路由错误：

However, I get the following routing error when I click on this link:

路由错误没有路由匹配{：action =>update_specs，
：controller =>products}

Routing Error No route matches {:action=>"update_specs", :controller=>"products"}

我已经阅读了路由，但我不明白为什么我应该路由这个方法，如果所有其他方法都可以通过资源访问：产品。 / p>

I've read up on routing but I don't understand why I should have to route this method if all other methods are accessible via resources:products.

推荐答案

您需要为其创建路线。

：

resources :products do
  put :update_specs, :on => :collection
end

默认情况下 link_to 将在您的路由中查找 GET 方法。如果要处理 POST 或 PUT 方法，您需要通过添加 ：method => ：post} 或 {：method => ：put} 作为参数，如：

Also by default link_to will look for a GET method in your routes. If you want to handle a POST or PUT method you need to specify it by adding {:method => :post } or {:method => :put } as a parameter, like:

link_to "Update Specs", {:controller => :products, :action => :update_specs}, {:method => :put }

也可以使用 button_to 而不是默认处理 POST 方法的 link_to 。

Or you can use button_to instead of link_to which handles the POST method by default.

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