nitro form

I was trying out tutotial from nitroproject.org with Nitro 0.4. In that tutorial, there is one form, to search for Users. User has three properties: name,description and age. In my xhtml page, to display current users, i wanted to add one form to search for users. so I added this line: #{formfor User.findby_name(@name)} and in controller I added helper :form, but it didnot work. The page doesnt display the form. It says undefined method 'formfor'. How can I solve this in Nitro 0.4? Thanks

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