update values of checkbox with HABTM relationship — Rails

Question

Hey guys I\'ve been using the has_and_belongs_to_many relationship with checkboxes example from the Railscast Episode #17 . I had some problems and now everything is workin

Answer 1

I played around with the form and the correct code is this ==>

<% form_for @user do |f| %>
<% for interest in Interest.find(:all) %>

 <%= check_box_tag "user[interest_ids][]", interest.id, @user.interests.include?(interest) %>
 <%= interest.name %>

<% end %>

<%= f.submit 'Edit' %>

<% end %>

I'm so happy! So apparently the problem was :user which should the be object @user.