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PObefore_create callback generates random array
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  1. PObefore_create callback generates random array
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    copied!<p>When I create a randomly generate exam I would like to store all the correct answer in an array. The reason that I am doing this is because when I grade the exam I would like to see if the answer is correct by matching the user_answer with the same element in the correct_answer array. Unfortunately, when i use a callback its putting the correct answers in a random order where I cannot match them appropriately. </p> <pre><code> ##controller## class ExamsController &lt; ApplicationController def create exam = current_user.exams.create!(test_bank_questions: TestBankQuestion.all.sample(5)) exam.answers redirect_to exam_question_path(exam, '1') end end #####Model###### class Exam include Mongoid::Document before_create :answers field :user_answer, type: Array, default: [] field :correct_answers_ids, type: Array, default: [] belongs_to :user has_and_belongs_to_many :test_bank_questions #### This is where my problem is #### #I am trying to get all the id's of the correct answer #and put them in an array when the object is created def answers exam_questions = self.test_bank_questions exam_questions.each do |question| answer_choices = question.answer_choices answer_choices.each do |choice| if choice.correct_choice == true self.correct_answers_ids &lt;&lt; choice.id.to_s end end end return correct_answers_ids end end ####Model #### class TestBankQuestion include Mongoid::Document field :question_url, type: String embeds_many :answer_choices has_and_belongs_to_many :exams end ###Model ### class AnswerChoice include Mongoid::Document field :choice_url, type: String, default: [] field :correct_choice, type: Boolean, default: [] embedded_in :test_bank_question end </code></pre>
 

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