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# frozen_string_literal: true
# This model is not used yet, it will be used for:
# https://gitlab.com/gitlab-org/gitlab-ce/issues/48483
class ResourceLabelEvent < ActiveRecord::Base
belongs_to :user
belongs_to :issue
belongs_to :merge_request
belongs_to :label
validates :user, presence: true, on: :create
validates :label, presence: true, on: :create
validate :exactly_one_issuable
enum action: {
add: 1,
remove: 2
}
def self.issuable_columns
%i(issue_id merge_request_id).freeze
end
def issuable
issue || merge_request
end
private
def exactly_one_issuable
if self.class.issuable_columns.count { |attr| self[attr] } != 1
errors.add(:base, "Exactly one of #{self.class.issuable_columns.join(', ')} is required")
end
end
end
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