Rails - May 2008 - multiple has_many objects in one form

Hi - I have to models, Question and Answers.  A question has many
answers. I want to set up a form where a user can submit 1 question
and up to 10 answers.  So, in the questions controller, I have new:

def new
@question = Question.new
@answers=[]
  i=0
  while i<10
    @answers << Answer.new
    i += 1
  end
end

In the form, I''m trying something like:

<% form_for :question do |f|%>
Question: <%=f.text_field :question%>

<%for @answer in @answers %>
  <%fields_for :answer do|a|%>
  Answer: <%=a.text_field :answer%> <br/>
  <%end%>
<%end%>

<%end%>

The problem is, this doesn''t index the answers, the html just shows 10
repeated answer[answer].  Is there a better way?

The second question I have is, how do I validate for at least 1
answer?

Thanks,
Dino
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