1 files changed, 4 insertions, 33 deletions
diff --git a/app/models/issue_link.rb b/app/models/issue_link.rb
index 920586cc1ba..1bd34aa0083 100644
--- a/app/models/issue_link.rb
+++ b/app/models/issue_link.rb
@@ -2,46 +2,17 @@
 
 class IssueLink < ApplicationRecord
   include FromUnion
+  include IssuableLink
 
   belongs_to :source, class_name: 'Issue'
   belongs_to :target, class_name: 'Issue'
 
-  validates :source, presence: true
-  validates :target, presence: true
-  validates :source, uniqueness: { scope: :target_id, message: 'is already related' }
-  validate :check_self_relation
-  validate :check_opposite_relation
-
   scope :for_source_issue, ->(issue) { where(source_id: issue.id) }
   scope :for_target_issue, ->(issue) { where(target_id: issue.id) }
 
-  TYPE_RELATES_TO = 'relates_to'
-  TYPE_BLOCKS = 'blocks'
-  # we don't store is_blocked_by in the db but need it for displaying the relation
-  # from the target (used in IssueLink.inverse_link_type)
-  TYPE_IS_BLOCKED_BY = 'is_blocked_by'
-
-  enum link_type: { TYPE_RELATES_TO => 0, TYPE_BLOCKS => 1 }
-
-  def self.inverse_link_type(type)
-    type
-  end
-
-  private
-
-  def check_self_relation
-    return unless source && target
-
-    if source == target
-      errors.add(:source, 'cannot be related to itself')
-    end
-  end
-
-  def check_opposite_relation
-    return unless source && target
-
-    if IssueLink.find_by(source: target, target: source)
-      errors.add(:source, 'is already related to this issue')
+  class << self
+    def issuable_type
+      :issue
     end
   end
 end