select dropdown for belongs_to field

[skunkwerk]

Hi,
I have a 'person' model that belongs_to a 'group' model. I used
scaffolding to generate the form code for adding a new person, but I
want a select drop-down for selecting which group to assign a person
to. I looked at the rails form helpers guide, and tried a few
different things in the template, like:

<%= f.select :vendor, @vendor %>
but i'm getting errors...

what's the proper way to do this? is there any controller code
necessary?

thanks!

[Virendra Negi]

here is it is
f.select(:group_id,Group.all,:prompt => true)
i think it should work
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