March 21st, 2007

So I have always loved form_for, but it becomes tricky to use when your object is more complex than a simple flat object with attributes that can be set in the manner. But what if you are trying to save a model that has assoctiated models? Enter fields_for

class Package < ActiveRecord::Base
   has_one :address
end

class Address <ActiveRecord::Base
end

<% form_for @package do |f| %>
  <%= f.text_field 'special_notes' %>
  <% f.fields_for @package.address do |a| %>
    <%= a.text_field 'first_line' %>
    <%= a.text_field 'second_line' %>
  <% end %>
<% end %>