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class ProjectLabel < Label
NUMBER_OF_PRIORITIES = 1
belongs_to :project
validates :project, presence: true
validate :permitted_numbers_of_priorities
validate :title_must_not_exist_at_group_level
delegate :group, to: :project, allow_nil: true
alias_attribute :subject, :project
def to_reference(target_project = nil, format: :id)
super(project, target_project, format: format)
end
private
def title_must_not_exist_at_group_level
return unless group.present? && title_changed?
if group.labels.with_title(self.title).exists?
errors.add(:title, :label_already_exists_at_group_level, group: group.name)
end
end
def permitted_numbers_of_priorities
if priorities && priorities.size >= NUMBER_OF_PRIORITIES
errors.add(:priorities, 'Number of permitted priorities exceeded')
end
end
end
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