'ActionView::Template::Error - 没有路由匹配'超越“旧风格” “link_to”的参数陈述
我正在使用 Ruby on Rails 3.0.9，遇到了这个问题： 为“link_to”语句设置“:controller”参数时出现问题。没有人回答解决方案，但是，在尝试并重新尝试查找并解决问题时，我发现在传递“旧式”参数时（即使用 controller 和 action< /code> 选项而不是命名路由路径）有时 link_to 无法按预期工作（即，您会收到 ActionView::Template::Error - No Route matches 错误，尽管如果您有正确说明的控制器和路线）。无论如何，你可以像下面这样设置：
<%= link_to("New article", {:controller => '../', :action => 'new'}) %> # Note the "'../'"
它可以工作。
我想知道何时和为什么，一般来说，它会发生：controller选项似乎“被迫”引用相对或绝对路径而不是您传入的控制器参数。
也就是说，如果我设置 :controller =>; articles ，我在由 controllers/article/categories_controller.rb 管理的视图文件中使用上述代码，我收到以下错误：
`ActionView::Template::Error (No route matches {:controller=>"articles/categories/articles", :action=>"new"})`
因为，如上所述，控制器似乎引用/articles/categories 路径而不是 /articles 路径（因为在本例中，我将控制器设置为 articles） 。会不会是路由器的问题？
I am using Ruby on Rails 3.0.9 and I had this problem: Trouble on setting the ':controller' parameter for a 'link_to' statement. No one answered with a solution but, trying and re-trying to find and solve the problem, I have found that on passing "old style" parameters (that is, using controller and action options instead of named route paths) sometime a link_to doesn't work as expected (that is, you get a ActionView::Template::Error - No route matches error although if you have controller and routes properly stated). Anyway you can set for that something like the following:
<%= link_to("New article", {:controller => '../', :action => 'new'}) %> # Note the "'../'"
and it works.
I would like to know when and why, in general, it happens: the controller option seems "forced" to refer to the relative or absolute path and not to the controller parameter you passed in.
That is, if I set :controller => articles and I use the above code in a view file managed by the controllers/article/categories_controller.rb I get the following error:
`ActionView::Template::Error (No route matches {:controller=>"articles/categories/articles", :action=>"new"})`
because, as said above, the controller seems to refer to the /articles/categories path instead of /articles path (as it should be since, in this example, I set the controller to articles). Can be it a router problem?
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“无路由错误”一般发生在routes.rb文件中没有提到正确的路由时。它与绝对/相对路径无关。
The "no route error " generally occurs when there is no proper route mentioned in routes.rb file.It has nothing to do with the absolute/relative path.