Why isn't validation kicking in and how can I make it so?

Hi,

I have a model, ec_order, which has multiple ec_line_items. You start a "new" order through the OrderController ...

class OrderController < ApplicationController         def new             if logged_in?                 @user = User.find(session[:user_id])                 @ec_order = EcOrder.new                 3.times { @ec_order.ec_line_items.build }             else                 flash[:notice] = "You must be logged in to access this page."                 redirect_to :controller => "register", :action => "start"             end         end

        def summary                 @ec_order = EcOrder.new(params[:ec_order])                 session[:ec_order] = @ec_order         end

... end

Here's the ec_line_item model:

class EcLineItem < ActiveRecord::Base         belongs_to :ec_order

        validates_numericality_of :prescription_number, :integer_only => true end

In the form on the "new" view, you submit to the "summary" action. How can I detect if the ec_line_item objects are valid or not and reroute back to the "new" action? Thanks, - Dave

PS - If it's useful, here's the app/views/order/new.rhtml file:

===================Begin new.rhtml file============================= <% form_for :ec_order, :url => 'summary' do |f| %> <table>         <tr>                 <td>Item</td>                 <td></td>         </tr>         <%= f.hidden_field :ship_first_name, :value => @user.ship_to_first_name %>         <%= f.hidden_field :ship_last_name, :value => @user.ship_to_last_name %>         <%= f.hidden_field :ship_street_address, :value => @user.ship_to_street %>         <%= f.hidden_field :ship_city, :value => @user.ship_to_city %>         <%= f.hidden_field :ship_state, :value => @user.ship_to_state %>         <%= f.hidden_field :ship_zip, :value => @user.ship_to_zip %>         <%= f.hidden_field :ship_country, :value => @user.ship_to_country %>         <%= f.hidden_field :email, :value => @user.email %>         <%= f.hidden_field :phone, :value => @user.phone %>         <tr><td>                 <table cellpadding="0" cellspacing="0" border="0">                         <tr><td>                                 <div id="ec_line_items">                                 <%= render :partial => 'ec_line_item', :collection => @ec_order.ec_line_items %>                                 </div>                                 <%= add_prescription_link "Add a prescription" %>                         </td></tr>                 </table>         </td></tr>         <tr><td align="center"><%= submit_tag("Submit Form") %></td></

</table> <% end %> ========================end new.rhtml file=============================