Using accepts_nested_attributes_for, has_many and creating just one entry

I have a Page with many Comments. Many users can access this page and submit comments. I view the comments on another Page that is private. models/page.rb ``` class Page < ActiveRecord::Base has_many :comments, :dependent => :destroy accepts_nested_attributes_for :comments, :allow_destroy => true end ``` models/comment.rb ``` class Comment < ActiveRecord::Base belongs_to :page belongs_to :user end ``` views/pages/show.html.erb relevant section ``` <%= form_for @page, :remote => true do |f| %> <% f.fields_for :comments do |builder| %> <%= builder.text_area :content, :rows => 1 %> <%= builder.submit "Submit" %> <% end %> <% end %> ``` controllers/pages_controller.rb ``` def show @page = Page.find(params[:id]) end def update @page = Page.find(params[:id]) @page.comments.build @page.update_attributes(params[:page]) end ``` The issue here is that I do not want to have the user see multiple fields for comments. Yet, if I do `<% f.fields_for :comment do |builder| %>` then it throws an error because it doesn't know what one comment is, and only wants to deal with multiple. Essentially, the user should be able to submit a single comment on a page, which has many comments, and have that automatically associated with the page. As a secondary thing, I need to have the user's id (accessible through current_user.id via Devise) associated with the comment.