Question

我有三种模式：帖子，评论和问题，我试图将帖子与问题联系起来。

我的routes.rb文件如下所示：

resources :posts do
 resources :comments do
end
end

resources :comments do
 resources :questions do
 end
end

这是帖子视图文件：

<% post.comments.select(:body).order('created_at desc').limit(2).each do |comment| %>
<%= link_to (comment.body), comment_questions_path(#what to pass in here?) %>
<% end %>

我试过了：

<%= link_to (comment.body), comment_questions_path(comment, @question) %>

错误：

No route matches {:controller=>"questions", :action=>"index", :comment_id=>#<Comment id: nil, body: "Describe what it was like to witness the explosion?...">, :format=>nil} missing required keys: [:comment_id]    <%= link_to (comment.body), comment_questions_path(#what to pass in here?) %>

和：

 <%= link_to (comment.body), comment_questions_path(:comment_id, question) %>

错误：

 Couldn't find Comment with id=comment_id

和

<%= link_to (comment.body), comment_questions_path(:comment_id, :id) >

错误：

 Couldn't find Comment with id=comment_id

这是路线：

comment_questions GET    /comments/:comment_id/questions(.:format)            questions#index

感谢您的帮助！和问题控制器中的索引函数：

def index
@comment = Comment.find params[:comment_id]
@questions = @comment.questions
end

Answer 1

首先删除.select(:body)。这使得它返回body属性，但不能使您正确使用该对象。

然后尝试：

link_to comment.body, comment_questions_path( comment )

Answer 2

在您的终端中运行：

$ rake routes

通过嵌套资源进行链接

2 个答案: