Rails - Oct 2009 - get value of select whch change using ajax after form submit

Hi All,
I have a problem while updating select list using ajax and then submit
it.
what i have done is to  change the drop down of a city when i changed
the state.but when i am submitting the form i am not able to get the
value of city.
Following is my code for the same.

edit.html.erb
<% form_for :user_info , :url=>{:controller=>"users",
:action=>"update_contact_details",:id=>params[:id] } do |f|
%>

     <% @state= UsaCity.find_by_sql(''select DISTINCT state from
usa_cities'') %>
     <tr>

           <td >State</td>

           <td> <%= select_tag ''user_info[state]'',
options_from_collection_for_select(@state, :state, :state,
@user_info.state) %><div id="user_sate_loading"
style="display:none"><img
src="/images/loading.gif"></div>
<br><span id="stateError"
class="error"></span>
<%= observe_field :user_info_state, :url
=>{:controller=>"logins",:action
=>''select_city'', :id=>''1''},
:update=>
''city'' ,  :with => "''
state=''+document.getElementById(''user_info_state'').value+''&type=contact_details''",
:on=>''click''  %>

  </td>

        </tr>
       <tr id="city">

        <td >City</td>

       <td><%= collection_select :user_info, :city,  @cities ||
Array.new, :city, :city, :prompt=>true %><br><span
id="cityError"
class="error"></span></td>

        </tr>

<% end %>

controller method
  def edit_city
    @cities = UsaCity.find(:all, :conditions=>["state=?",
params[:state]])
    @type = params[:type]
    render :update do |page|
       page.replace_html ''city'', :partial =>
''logins/select_city'',
:object=>[@cities, @type], :layout => false
    end
  end



_select_city.html.erb

<td>City1345</td>
<td><%= collection_select :user_info, :city,  @cities || Array.new,
:city, :city, :prompt=>true %><br><span id="cityError"
class="error"></span></td>


Regards,
Salil Gaikwad
-- 
Posted via http://www.ruby-forum.com/.

Hi All,

Sorry for this but it''s not working properly because i use form_for tag
inside the <table> tag.
i only remove form  from inside the table and keep outside the table tag 
and now everything is works like a magic. I hope this will help someone 
to save his/her 1 hr or 2.

Regards,

Salil Gaikwad
-- 
Posted via http://www.ruby-forum.com/.