我有三个模型：帖子、评论和问题，并试图从帖子链接到问题。
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 %>
我努力了：
<%= 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
谢谢您的帮助！和问题控制器中的索引功能：
def index
@comment = Comment.find params[:comment_id]
@questions = @comment.questions
end