rails 3 accepts nested attributes not working

I am trying to use nested attributes on my user model for settings so that I can edit the user info and the setting info in a single page. Here is my code:

User.rb

has_one :settings
accepts_nested_attributes_for :settings, :allow_destroy => true
attr_accessor :settings_attributes

views/users/registrations/edit.html.erb

<%= f.fields_for :settings do |s| %>
<p>
  <%= s.label :newsletter %><br />
  <%= s.check_box :newslet开发者_开发知识库ter %>
</p>
<% end %>

This seemingly works just fine, the form is displayed properly. However the attributes for the settings are not changed at all when I submit the form.

I am using Rails 3, and Devise created my user model. Perhaps I am missing something that needs to go in the controller model?

Most likely caused by using plural instead of singular for setting. Try changing to this:

model

has_one :setting
accepts_nested_attributes_for :setting, :allow_destroy => true

view

<%= f.fields_for :setting do |s| %>

What are you using the attr_accessor for?