Getting nested forms to render

Question

I'm trying to build a nested form, but the nested form of question_fields isn't rendering in the browser. That form has a nested form called answers, also not rendering

Here's the nested form, _createpoll.html.haml

= form_for Poll.new, :class=>'create-poll-form', :remote => true do |f|
  = f.text_field :title, :autofocus => true, :placeholder => "Poll Title"
  = f.text_field :description, :placeholder => 'Description'

  / Required accepts_nested_attributes_for :questions in the polls model.  
  = f.fields_for :questions do |builder| 
    = render "questions/question_fields", :f => builder

  = f.submit "Create Poll", :class => 'btn btn-danger'

Here's the _questions_fields.html.haml:

%p
  = f.label :content, "Question"
  = f.text_area :content
  = f.check_box :_destroy
  = f.label :_destroy, "Remove Question"
%p
  = f.fields_for :answers do |builder|
    = render "answers/answer_fields", :f => builder

Here's the related Polls Controller, new and create actions

  def create
    @poll = Poll.create(params[:poll])
  end

  def new
    @poll = Poll.new  
    1.times do
      question = @poll.questions.build
      2.times {question.answers.build}
    end
  end

Any ideas on why this might not be rendering? Thanks in advance for the tips!!

Update, a new question

After creating the poll with its associated questions and answers, after querying the database, I see that that the foreign keys aren't persisted and the association is lost. Do I have to use hidden fields here somehow?

Keith Johnson · Accepted Answer · 2013-06-06 02:49:59Z

1

Silly oversight. Poll.new has to be @poll... whoops.

Updating Answer.

This form was was rendered by a button on the user's dashboard, "Create Poll," routing through the controller's new action.

As controller's new action instantiates the new poll, I was being redundant when instantiating another poll in the form for. By switching this to the newly created instance variable @poll, the form rendered. Also, :content threw a no method error, but that's because it wasn't in the attr_accessible of the questions or answers models.

edited Jun 6, 2013 at 2:49

answered Jun 6, 2013 at 2:10

Keith Johnson

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2 Comments

Leigh Over a year ago

@Keith - Sounds like you may have figured out the problem yourself? If so, good job :) However, could you elaborate a little? Just so people do not mistake it for a comment or non-answer.

Keith Johnson Over a year ago

@Leigh Just updated it. Let me know if you have more questions, sorry about the lack of clarity!

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