Rails - May 2009 - Getting form field value within link_to_function

Hi all,
I''m very new to this community, and I started practicing with Ruby on
Rails just recently.
I watched the 3 episodes , 72-73-74 for complex forms on railscasts ,
and I''m trying to deploy a "new" function for my form based
on what I
saw in the 3 episodes.
So, I have a form for my master table, with 2 fields: one is named
"from_pl" and the other is named "to_pl".
What I''d like to achieve is the possibility of adding (to_pl - from_pl)
children to the form with the click on a link.
So my model is perfectly shaped, and the link Add child , in the vein of
the referenced episode of railscasts is perfectly working, the code in
the new.html.erb is
<%= link_to_function "Add Child" do |page|
  page.insert_html :bottom, :percentages, :partial =>
''percentage'',
:object => MatchPercentage.new
 end %>
I''d like to add more than 1 child , and I tried with a loop.
So far, using
  <%= link_to_function "Add Child" do |page|
  3.upto(6) do
    page.insert_html :bottom, :percentages, :partial =>
''percentage'',
:object => MatchPercentage.new
    end
  end %>
works fine. I''d like to substitute the 3 and the 6 with the values of
the 2 fields in the form, which has not yet been submitted.
I tried with a lot of different searches on the web, but didn''t find
anything suitable.
Could you please enlighten me if there is a solution or not?
Thanks a lot, Kind regards
-- 
Posted via http://www.ruby-forum.com/.

OK guys,
think I solved it by spending a little more time.
Instead of using Ruby code for looping, I used js enflation with the 
page << command.
This is what did it for me:
  <%= link_to_function "Add Child" do |page|
    page <<
"for(i=$(''from_pl'').value;i<=$(''to_pl'').value;i++)
{"
    page.insert_html :bottom, :percentages, :partial =>
''percentage'',
:object => MatchPercentage.new
    page << "}"
  end %>
Posting it as maybe someone else will need it.
Cheers
-- 
Posted via http://www.ruby-forum.com/.