Yield, content_for and Ajax actions?!

Hello,

I have a piece of code like:

...
<% content_for :js_templates do -%>
  <%= "var phone='#{generate_template(contact_form, :phones, :partial =>
"/contacts/phones/create")}'" %>
<% end -%>
...

But that code is in a view that is called dynamic and of course
content_for
doesn't work.
I would like to know if, someone have a solution for that problem.

Regards,
David Sousa