Question

我想在“群组留言展示”视图中的帖子上设置评论表单。但是我有一条错误消息，例如

/ group_messages / 64的NoMethodError ＃＆lt;＃：0x007f9c0afa0b38＆gt;

的未定义方法`group_message_group_message_comments_path' 你可以给我一些建议吗？

☆show.html.erb（group_messages）

<h2>Add a comment</h2>
 <%= form_for([@group_message, @group_message_comment])  do |f| %>
  <% if @group_message_comment.errors.any? %>
    <div id="error_explanation">
      <h2><%= pluralize(@group_message_comment.errors.count, "error") %> prohibited this group_message_comment from being saved:</h2>
      <ul>
       <% @group_message_comment.errors.full_messages.each do |msg| %>
       <li><%= msg %></li>
       <% end %><%# do%>
      </ul>
    </div><!-- error_explanation-->
  <% end %><%# if any?%>
  <div class="field">
    <%= f.label :member_id %><br />
    <%= f.number_field :member_id %>
  </div>
  <div class="field">
    <%= f.label :gmessage_id %><br />
    <%= f.number_field :group_message_id %>
  </div>
  <div class="field">
    <%= f.label :group_id %><br />
    <%= f.number_field :group_id %>
  </div>
  <div class="field">
    <%= f.label :content %><br />
    <%= f.text_field :content %>
  </div>
 <div class="actions" >
    <%= f.submit "Comment"%>
 </div>
<% end %><%# form_for>

☆group_messages_controller

def show
    if !checklogin? then return end
      @group_message = GroupMessage.find(params[:id])
      @isme = me? @group_message
      @group_message_comment = GroupMessageComment.new
      @group_message_comment = GroupMessage.find(params[:id]).group_message_comments.build

    respond_to do |format|
      format.html # show.html.erb
      format.json { render json: @group_message }
    end
end

☆GroupMessage模型

class GroupMessage < ActiveRecord::Base
  attr_accessible :content, :member_id, :group_id

  belongs_to :member
  belongs_to :group
  has_many :group_message_comments

end

☆GroupMessageComment模型

class GroupMessageComment < ActiveRecord::Base
  attr_accessible :content, :gmessage_id, :group_id, :member_id

  belongs_to :member
  belongs_to :group_message

end

☆routes.rb中

MiniSNS::Application.routes.draw do
  resources :group_message_comments


  root :to => 'members#login'
  match '/groups/join'
  resources :group_messages
  resources :groups do 
  resources :group_messages
  end
  match '/members/new'


  resources :index
  resources :groups
  post 'groups/:id' => 'group#show'
  post '/groups/new'
  post '/index/index'

  match '/members/login'
  match '/members/logout'
  match '/members/friend'
  match 'members/show'
  post 'messages/comment'

  resources :comments
  resources :messages
  resources :friends
  resources :members

Answer 1

该错误消息是由以下代码行引起的：

<%= form_for([@group_message, @group_message_comment])  do |f| %>

这是因为您没有为模型设置正确的路由。你可以发布你的routes.rb以便我可以看看吗？

我认为您需要嵌套路线，例如：

resources :group_messages do
    resources :group_message_comment
end

在帖子上设置评论表单

1 个答案: