Rails 4.1: Unable to create multiple answers in form - html

Question

Want to create a polling app that allows you to create a question with 5 different possible answers (multiple choice).
The user can create a question via the question_form.html.erb followed by possible answers but it only shows me one box , not five.
question_form.html.erb
<%= form_for([ #poll, #question ]) do |f| %>
<% if #question.errors.any? %>
<div id="error_explanation">
<h2><%= pluralize(#question.errors.count, "error") %> prohibited this question from being saved:</h2>
<ul>
<% #question.errors.full_messages.each do |message| %>
<li><%= message %></li>
<% end %>
</ul>
</div>
<% end %>
<div class="form-group">
<%= f.label :title %>
<%= f.text_field :title, class: "form-control" %>
</div>
<div class="form-group">
<%= f.label :kind %><br>
<% #kind_options.each do |option| %>
<label>
<%= f.radio_button :kind, option[1] %>
<%= option[0] %>
</label>
<% end %>
<p>Specify some choices:</p>
<%= f.fields_for :possible_answers do |c| %>
<p>
<%= c.text_field :title, placeholder: "Type your choice", class: "form-control" %>
</p>
<% end %>
</div>
in my questions controller I have added line 5.times { #question.possible_answers.build }
but when i run the program it gives me 1 box to enter the answer not 5?
<div class="actions">
<%= f.submit 'Save', class: "btn btn-primary" %>
</div>
<% end %>
class QuestionsController < ApplicationController
before_action :set_question, only: [:show, :edit, :update, :destroy]
before_action :set_poll
before_action :set_kind_questions
# GET /questions
# GET /questions.json
def index
#questions = Question.all
end
# GET /questions/1
# GET /questions/1.json
def show
end
**# GET /questions/new
def new
#question = #poll.questions.build
5.times { #question.possible_answers.build }
end**
# GET /questions/1/edit
def edit
end
# POST /questions
# POST /questions.json
def create
#question = #poll.questions.build(question_params)
respond_to do |format|
if #question.save
format.html { redirect_to #poll, notice: 'Question was successfully created.' }
format.json { render :show, status: :created, location: #question }
else
format.html { render :new }
format.json { render json: #question.errors, status: :unprocessable_entity }
end
end
end
# PATCH/PUT /questions/1
# PATCH/PUT /questions/1.json
def update
respond_to do |format|
if #question.update(question_params)
format.html { redirect_to #question, notice: 'Question was successfully updated.' }
format.json { render :show, status: :ok, location: #question }
else
format.html { render :edit }
format.json { render json: #question.errors, status: :unprocessable_entity }
end
end
end
# DELETE /questions/1
# DELETE /questions/1.json
def destroy
#question.destroy
respond_to do |format|
format.html { redirect_to questions_url, notice: 'Question was successfully destroyed.' }
format.json { head :no_content }
end
end
private
# Use callbacks to share common setup or constraints between actions.
def set_question
#question = Question.find(params[:id])
end
# Never trust parameters from the scary internet, only allow the white list through.
def question_params
params.require(:question).permit(:title, :kind, :poll_id)
end
**def set_kind_questions
#kind_options = [
[ "Open Answer", "open" ],
[ "Multiple Choice", "choice" ],
]
end**
def set_poll
#poll = Poll.find params[:poll_id] #/polls/1/questions
end
end

Answer 1

If you're working through Build a Polling Application with Rails, the Question model you're most likely using (which you didn't list) is incomplete, so Rails chokes on possible_answers before the controller's Questions#new iterates through the build method. You need to add accepts_nested_attributes_for :possible_answers to the model. Then 5.times { #question.possible_answers.build } will work.
app/models/question.rb
class Question < ActiveRecord::Base
belongs_to :poll
has_many :possible_answers
accepts_nested_attributes_for :possible_answers
end
I've run into a few snags where the author edited code out of sync with his screencasts. You have to look carefully at the diffs on his tut's repo.