表单提交显示未知操作

Question

我试图创建一个表单，提交到当前控制器(results_controller)内的某个动作。

我的表单代码是:

 <%= form_tag(:controller => "results", :action => "filter", :id => "filter") do %>

在results_control。我有:

def filter
      #setting dispatches
        @dispatches = Dispatch.find_by_message_ids(params[:message_ids]) unless params[:message_ids].blank?
      unless @dispatches.blank? || @input_messages.blank?
        @output_messages = OutputMessage.find_by_dispatch_ids(
                                            @dispatches.collect{|d| d.id }.uniq
                                          )
        end
      respond_to do |format|
        format.html #default rendering
      end
  end

然而我得到错误:

Unknown action
The action 'filter' could not be found for ResultsController

有什么建议吗?

在同一页面上，我有一个表单的工作:

<%= form_tag(:controller => "results", :action => "show", :id => "show")  do %>

Answer 1

try instead

<% form_tag(filter_result_path(), :method => :get) do %>

并添加到路由表

resources :results do
  member do
   get 'filter'
 end
end