gistfile1.erb

<%= form_for :question, :url => step1_path do -%>
  <% for question in @questions %>
      <%= fields_for "answers[]", Answer.new(question_id: question.id) do |li_fields| %>
        <%= li_fields.label :title, question.title %>
        <%= li_fields.hidden_field :question_id %>
        <%= li_fields.text_field :weight %>
      <% end %>
    <% end %>
  <%= submit_tag "Create line items" %>
<% end %>

gistfile2.rb

class Survey < ActiveRecord::Base
  has_many :questions
  has_many :answers, through: :questions
  accepts_nested_attributes_for :answers
end

gistfile3.txt

class User < ActiveRecord::Base
  accepts_nested_attributes_for :answers
  has_many :answers
end

gistfile4.rb

class Step1Controller < ApplicationController

  def new
    @questions = Question.all()
  end

  def create
    if current_user
      current_user.update_attributes!(params[:question])
    else
      survey = Survey.first
      survey.update_attributes!(params[:question])
    end
    flash[:notice] = 'Reports were successfully updated.'
    redirect_to 'step1'
  end

end