semantic_form_for should output only when = is used

[fabiokr]

Hi there,
I'm having some trouble with formtastic and rjs forms. I have this edit.html.haml file:

= semantic_form_for @account, :remote => true do |form|
  = render :partial => 'form', :object => form

Then I have an update.js.erb:

<% if @account.errors.empty? %>
  alert('yes!');
<% else %>
  <% semantic_form_for(@account) do |form| %>
    $('edit_account_1').update("<%= escape_javascript(render(:partial => 'form', :object => form)) %>");
  <% end %>
<% end %>

My problem is, on the rjs, I don't want that semantic_form_form outputs a form element, I just need the form variable so that the partial can render the inputs. I expected that if I used semantic_form_form with only <% it would'nt output the form element. Am I doing something wrong, or is my request really valid?

[mjonuschat]

Which formtastic and rails version are you using?

Rails 2.x still has the concatenation to the output buffer, so wether you are using <%= or not doesn't make a difference. When you are using Rails 3.x formtastic should adhere to the changes in the block level helpers and only output when used with <%=

[fabiokr]

I'm using Rails 3.0 and the latest formtastic from master =\

[justinfrench]

Can you write a simple test to investigate if semantic_form_for behaves differently to Rails' own form_for? If form_for is doing the same thing, then I suspect you're "doing it wrong". There's also a fields_for which might help, not sure.

Will close in a week if I haven't heard any more.

[fabiokr]

Rails form_for haves the same behavior. I've just changed my approach, I'm replacing my entire form with rjs now. Thanks!

[justinfrench]

Thanks, closing.