CODEWITHSUNDEEP
ruby-on-rails
user3576036
user3576036

Reputation: 1425

Multiple choice quiz app in rails

I am trying to build a rails quiz app, where there will be a question and that particular question will have 4 choices. And below is my approach to the model:

rails g Question description:text choice:array

I am having trouble getting started. Would this be right approach? If not how should I go about this?

And then there will be category model as which will have has_many association with Question model. 

rails g Category name:string

I will be storing categories foreign key in questions table to show this question is from this particular category.

I am struck at designing the proper Question model. Help would be much appreciated

Upvotes: 0

Views: 2096

Answers (1)

Simon Franzen
Simon Franzen

Reputation: 2727

You should think of an extra answer model. OK let's go:

Question:

# == Schema Information
#
# Table name: questions
#
#  id               :integer          not null, primary key
#  question_text    :text
#  type             :string
#  created_at       :datetime         not null
#  updated_at       :datetime         not null
#
class Question < ActiveRecord::Base
  has_many :answer_options, dependent: :destroy # the questions choices
end

AnswerOption:

# == Schema Information
#
# Table name: answer_options
#
#  id             :integer          not null, primary key
#  answer_text    :text
#  question_id    :integer
#  created_at     :datetime         not null
#  updated_at     :datetime         not null
#
class AnswerOption < ActiveRecord::Base
   belongs_to :question
   validates :answer_text, presence: true, allow_blank: false
end

How to store user answers ? In another model, let us call it a question_answer . -> the answer of an user. User selected some answer_options -> we store these IDs in serialized answer_option_ids attribute.

# == Schema Information
#
# Table name: question_answers
#
#  id                        :integer          not null, primary key
#  question_id               :integer
#  answer_option_ids         :text
#  user_id                   :integer
#

class QuestionAnswer < ActiveRecord::Base
  serialize :answer_option_ids
  belongs_to :question
  belongs_to :user
  validates_presence_of :question_id, :user_id
end

in your question.rb add has_many :question_answers, dependent: :destroy to get answers to that question

Upvotes: 2

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