fda53a0a2a
When we specify `belongs_to :author`, ActiveRecord automatically uses `author_id` as the foreign key.
33 lines
1.2 KiB
Ruby
33 lines
1.2 KiB
Ruby
class Poll::PairAnswer < ApplicationRecord
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belongs_to :question, -> { with_hidden }
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belongs_to :author, -> { with_hidden }, class_name: "User"
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belongs_to :answer_right, class_name: "Poll::Question::Answer"
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belongs_to :answer_left, class_name: "Poll::Question::Answer"
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delegate :poll, :poll_id, to: :question
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validates :question, presence: true
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validates :author, presence: true
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validates :answer_left, presence: true
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validates :answer_right, presence: true
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validates :answer_left, inclusion: { in: ->(a) { a.question.question_answers.visibles }},
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unless: ->(a) { a.question.blank? }
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validates :answer_right, inclusion: { in: ->(a) { a.question.question_answers.visibles }},
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unless: ->(a) { a.question.blank? }
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scope :by_author, ->(author_id) { where(author_id: author_id) }
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scope :by_question, ->(question_id) { where(question_id: question_id) }
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def self.generate_pair(question, user)
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answers = question.question_answers.visibles.sample(2)
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question.pair_answers.by_author(user).map(&:destroy)
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question.pair_answers.create(author: user, answer_left: answers[0], answer_right: answers[1])
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end
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def answers
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[answer_left, answer_right].compact
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end
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end
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