Partials views and instance variables go nil

@usuarios is nil when you post the forms and there are validation
errors (you're not reloading them a the create action), here's how to
solve it:

<%=collection_select(:usuario, :id, Usuario.all, :id, :nome_completo)%>

thanks!
I got it working like this:
http://disciplinas.dcc.ufba.br/svn/MATA76/Trabalho20091/equipe13/trunk/lac/app/views/vendas/_form.html.erb?view=log

The problem is with nested models through ajax. When submit button is
hitted, it claims that I didn't choose a credit card(cartao_de_credito)
for the payment(pagamento). How come?
http://disciplinas.dcc.ufba.br/svn/MATA76/Trabalho20091/equipe13/trunk/lac/app/views/vendas/_pagamento.html.erb?view=log

you can browse all the code through svn pages

thanks!
I got it working like this:http://disciplinas.dcc.ufba.br/svn/MATA76/Trabalho20091/equipe13/trun

The problem is with nested models through ajax. When submit button is
hitted, it claims that I didn't choose a credit card(cartao_de_credito)
for the payment(pagamento). How come?http://disciplinas.dcc.ufba.br/svn/MATA76/Trabalho20091/equipe13/trun

You're using collection_select wrong. EIther you use the form_builder
version and do

f.collection_select :attribute_name, ...

or you use the old version:

collection_select :ivar_name, :attribute_name, ...

but not some mix of the two as you have there

Fred

Nice!
It worked.
Last thing is that I tried using select_tag in many ways, but none
worked.
By lines 9-12 in
http://disciplinas.dcc.ufba.br/svn/MATA76/Trabalho20091/equipe13/trunk/lac/app/views/vendas/_pagamento.html.erb?view=log
I just want a normal select tag with those 4 values.

Frederick Cheung wrote: