Hello,
I think this is an easy one for the average Rails developer but I'm a bit stuck.
I'm creating a simple voting app: any user can create a survey, with any number
of questions, and other users can then vote by creating a ballot for that
survey.
Here's the modeling:
class Survey < ActiveRecord::Base
has_many :questions
has_many :eligibilities
has_many :ballots
accepts_nested_attributes_for :questions, :allow_destroy => true
attr_accessible :title, :description, :status, :deadline,
:questions_attributes
def owner
Person.find(owner_id)
end
end
class Question < ActiveRecord::Base
belongs_to :survey
has_many :preferences
end
class Ballot < ActiveRecord::Base
belongs_to :survey
has_many :preferences
end
class Preference < ActiveRecord::Base
belongs_to :ballot
belongs_to :question
end
To be clear: a survey is the set of questions and a ballot is a voter's set of
answers (preferences).
I'm using the nested route: /surveys/[:survey_id]/ballot/new for the voting
page.
What I'm having trouble with is pre-populating the ballot with empty
preferences. When ballot/new is called, I do this:
def new
@survey = Survey.find(params[:survey_id])
@ballot = @survey.ballots.build
# Prepare the ballot
for question in @ballot.survey.questions
p = Preference.new
p.ballot = @ballot
p.question = question
@ballot.preferences << p
end
respond_to do |format|
format.html # new.html.erb
format.xml { render :xml => @ballot }
end
end
and on the ballot/new.html.erb page, I try this:
<%= form_for [@survey, @ballot] do |f| %>
<%= f.fields_for :preferences do |preference_form| %>
<%= preference_form.fields_for :question do |question_form| %>
<p>
<%= question_form.label :question %><br />
<%= radio_button("preference", "preference", "Yes") %> Yes
<%= radio_button("preference", "preference", "No") %> No
<%= radio_button("preference", "preference", "Decline") %> Decline
</p>
<% end %>
<% end %>
<div class="actions">
<%= f.submit "Vote" %>
</div>
<% end %>
But this merely shows one set of radio buttons with no question text, though
I've confirmed the @survey.questions are populated with questions.
Does anybody see what I'm doing wrong here? My guess is looking at the
new.html.erb is going to really show off something incorrect.
Christopher Thielen
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