Question

I’m currently creating an app where users have the possibility to create questions for everyone to answer and then users can answer those questions and the app keeps track of those answers for every single user.

So I have 2 tables “questions” and “answers”.

The creating of a question already works, but now I’m kind of stuck at displaying only one question at a time for a user, which he hasn’t answered yet and then display the next question he hasn’t answered yet.

I hope someone can explain to me how to only show one table record at a time, and then efficiently keep track which of those questions have been answered yet.

Thanks

Answer 1

I think you have the following models:

class Question..
  has_many :answers
end

class User..
  has_many :answers

  def answered_questions
    answers.collect {|answer| answer.question}
  end

  def unanswered_questions
    Question.all - answered_questions
  end

  def next_unanswered_question
    unanswered_questions.first
  end

end

class Answer..
  belongs_to :question
  belongs_to :user
end

Then in your controller, you can have the following

class AnswersController...
  def new
    @question = current_user.next_unanswered_question

    if @question.nil?
      flash[:notice] = 'You are done!'
    end
  end
end