1 files changed, 22 insertions, 0 deletions
diff --git a/app/models/concerns/nonatomic_internal_id.rb b/app/models/concerns/nonatomic_internal_id.rb
new file mode 100644
index 00000000000..9d0c9b8512f
--- /dev/null
+++ b/app/models/concerns/nonatomic_internal_id.rb
@@ -0,0 +1,22 @@
+module NonatomicInternalId
+  extend ActiveSupport::Concern
+
+  included do
+    validate :set_iid, on: :create
+    validates :iid, presence: true, numericality: true
+  end
+
+  def set_iid
+    if iid.blank?
+      parent = project || group
+      records = parent.public_send(self.class.name.tableize) # rubocop:disable GitlabSecurity/PublicSend
+      max_iid = records.maximum(:iid)
+
+      self.iid = max_iid.to_i + 1
+    end
+  end
+
+  def to_param
+    iid.to_s
+  end
+end