63 lines
1.6 KiB
Ruby
63 lines
1.6 KiB
Ruby
# frozen_string_literal: true
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# == IssuableLink concern
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#
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# Contains common functionality shared between related Issues and related Epics
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#
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# Used by IssueLink, Epic::RelatedEpicLink
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#
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module IssuableLink
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extend ActiveSupport::Concern
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TYPE_RELATES_TO = 'relates_to'
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TYPE_BLOCKS = 'blocks' ## EE-only. Kept here to be used on link_type enum.
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class_methods do
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def inverse_link_type(type)
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type
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end
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def issuable_type
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raise NotImplementedError
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end
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# Used to get the available types for the API
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# overriden in EE
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def available_link_types
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[TYPE_RELATES_TO]
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end
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end
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included do
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validates :source, presence: true
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validates :target, presence: true
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validates :source, uniqueness: { scope: :target_id, message: 'is already related' }
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validate :check_self_relation
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validate :check_opposite_relation
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scope :for_source_or_target, ->(issuable) { where(source: issuable).or(where(target: issuable)) }
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enum link_type: { TYPE_RELATES_TO => 0, TYPE_BLOCKS => 1 }
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private
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def check_self_relation
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return unless source && target
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if source == target
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errors.add(:source, 'cannot be related to itself')
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end
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end
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def check_opposite_relation
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return unless source && target
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if self.class.base_class.find_by(source: target, target: source)
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errors.add(:source, "is already related to this #{self.class.issuable_type}")
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end
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end
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end
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end
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IssuableLink.prepend_mod_with('IssuableLink')
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IssuableLink::ClassMethods.prepend_mod_with('IssuableLink::ClassMethods')
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