23 lines
530 B
Ruby
23 lines
530 B
Ruby
# frozen_string_literal: true
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class StudyGroupMembership < ApplicationRecord
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ROLES = %w[learner teacher].freeze
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belongs_to :user, polymorphic: true
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belongs_to :study_group
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before_save :destroy_if_empty_study_group_or_user
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def destroy_if_empty_study_group_or_user
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destroy if study_group.blank? || user.blank?
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end
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enum role: {
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learner: 0,
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teacher: 1,
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}, _default: :learner, _prefix: true
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validates :role, presence: true
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validates :user_id, uniqueness: {scope: %i[user_type study_group_id]}
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end
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