complex forms in a simpler way?

I have a form which updates across several models, and most of the
time what is covered is close to the railscast example (complex
forms), for adding photos etc, but i have another example trying to
use the field_for for a seemingly one to one relationship...

ie My form has a bunch of fields in one model, but two fields for
price both high and low in a second model. There can only be one
price or high and low added per form, but it is not a one to one
relationship because the price can change over time which is added

How can I do this?



class Price < ActiveRecord::Base
  has_many :records
  has_many :bubbles


    @price =

<% form_for @price do |f| %>
  <%= f.error_messages %>

    <%= f.label :artist %><br />
    <%= text_field_with_auto_complete :price, :artist, :autocomplete
=> "off", :size => "30" %>

    <% for bubble in @price.bubbles %>
    <% fields_for "price[bubble]", bubble do |e| %>
        <%= e.label :price %><br />
          <%= e.text_field :low, :size => "4" %>-<%=
e.text_field :high, :size => "4" %>
      <% end %>
  <% end %>

Nevermind just did it thru the controller:

def new
    @price =
    @bubble =

def create
    @price =[:price])
    @bubble =[:bubble])

    <% fields_for :bubble do |e| %>
        <%= e.label :price %> $(10-25)<br />
          $<%= e.text_field :low, :size => "4" %>-<%=
e.text_field :high, :size => "4" %>
      <% end %>