Rails 3.0 and form_for

I am having trouble displaying form_for in my rails 3 app that i
upgraded from a 2.3.8. i realize taht you are suppose to change all of
the <% to <%=. However, despite that i am getting no output. it is as
if the form_for does not exist. I have not tested all of the
form_for’s but i can not get any of the ones i have tried so far.

any other obvious that needs to be changed?

Hi, this link explains how to create forms in rails3

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