How to bind data properly?

[Sanjay Giri]

sendAnswers page is a survey page with questions and options.

    def sendAnswers
       
       @questions = @homework.questions
       
       
    end

The view for sendAnswers is

    = form_for :survey do |f|
      - @questions.each_with_index do |q, i|
        %p
          %br  
          = "#{i+1})"
          = q.question
        %p  
          - if q.options.size == 0
            = f.text_field 'answer_' + q.id.to_s, placeholder: 'Answer', class: 'form-control'
          - else
            - q.options.each do |o|
              .radio
                %label      
                  = f.radio_button 'answer_' + q.id.to_s, o.option
                  = o.option
             
      = f.submit "Submit", class: 'btn btn-primary', data: {confirm: 'Are you sure you want to submit this homework?'}
         

The page posts to the following method which saves the answers to questions in database. 

    def saveAnswers
           
        @homework.questions.each do |q|
           
            aa = Answer.new
            aa.answer = params[:survey]['answer_' + q.id.to_s]
            aa.question = q
            aa.user = current_user
            aa.homework = @homework
            aa.save
   
        end
   
        render 'complete'
    end

        

As you can see above i am appending question ids to the questions in the view page to track which answer belongs to which question and in the save action i use the appended question ids to save the answer to respective question. I am wondering whether there is a better and more natural way of binding this and not doing it manually like i am doing. Can this be achieved using form objects? I appreciate any guide to this dilemma. Thanks!