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copied!<p>Idea in steps:</p> <p>1) Define a model such as AdditionalField (id, field_name, field_type, default_value, is_required)</p> <p>2) then create a function like:</p> <pre><code>def self.for_form(my_form_name = nil) if my_form_name.nil? self.all else self.find(:all, :contitions => {:form_type => my_form_name.type} # or whatever selection criteria end </code></pre> <p>3) then you can iterate over the found AdditionalFields and build the correct field types as needed.</p> <p>I used this solution for a comparison website where they needed to configure the questionnaires for each different comparison type.</p> <p>Here's the render code I used, you'll need to amend it to suit your situation. relationships are:</p> <pre><code>convention -< booking >- user convention -< convention_question booking -< guests guest -< guest_answers </code></pre> <p>QuestionsHelper</p> <pre><code>def render_guest_questions(guest, convention_question) fields_for "booking[guest_answer_attributes][]", convention_question do |m| case convention_question.display_type when "Text" '<td>' + text_field_tag("booking[guest_answer_attributes][convention_question_#{guest.id}_#{convention_question.id}]") + '</td>' when "Boolean" '<td>' + hidden_field_tag("booking[guest_answer_attributes][convention_question_#{guest.id}_#{convention_question.id}]", "No") + check_box_tag("booking[guest_answer_attributes][convention_question_#{guest.id}_#{convention_question.id}]", "Yes") + '</td>' end end end </code></pre> <p>Controller</p> <pre><code># TURN GUEST/QUESTIONS INTO guest answers if params[:booking] && !params[:booking].blank? && !params[:booking][:guest_answer_attributes].blank? params[:booking][:guest_answer_attributes].each do |k,v| handle_answers(k, v) end end def handle_answers(k, v) x = k.mb_chars.split(/_/) g_id = x[2] q_id = x[3] item = GuestAnswer.find_or_create_by_guest_id_and_convention_question_id( {:guest_id => g_id, :convention_question_id => q_id, :answer => v}) end </code></pre>

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