ruby-on-rails – Ruby on Rails：link_to动作,没有路由匹配

在app / controllers / posts_controller.rb中我创建了这个：

def incvotes
    @post = Post.find(params[:id])
    post.update_attributes(:upvotes => 1 )
    format.html { redirect_to(@post,:notice => 'Vote counted.') }
    format.xml  { head :ok }
  end

在app / views / posts / index.html.erb中我创建了这个：

<%= link_to 'Vote',:controller => "posts",:action => "incvotes",:id => post.id %>

但链接正在给出错误

No route matches {:controller=>”posts”,:action=>”incvotes”,:id=>1}

我在这里遗漏了一些东西,但不确定是什么.

耙路线：

incvotes_post POST   /posts/:id/incvotes(.:format) {:action=>"incvotes",:controller=>"posts"}
        posts GET    /posts(.:format)              {:action=>"index",:controller=>"posts"}
              POST   /posts(.:format)              {:action=>"create",:controller=>"posts"}
     new_post GET    /posts/new(.:format)          {:action=>"new",:controller=>"posts"}
    edit_post GET    /posts/:id/edit(.:format)     {:action=>"edit",:controller=>"posts"}
         post GET    /posts/:id(.:format)          {:action=>"show",:controller=>"posts"}
              PUT    /posts/:id(.:format)          {:action=>"update",:controller=>"posts"}
              DELETE /posts/:id(.:format)          {:action=>"destroy",:controller=>"posts"}
   home_index GET    /home/index(.:format)         {:action=>"index",:controller=>"home"}
         root        /(.:format)                   {:action=>"index",:controller=>"home"}