1 files changed, 13 insertions, 0 deletions
diff --git a/app/models/discussion_note.rb b/app/models/discussion_note.rb
new file mode 100644
index 00000000000..e660b024083
--- /dev/null
+++ b/app/models/discussion_note.rb
@@ -0,0 +1,13 @@
+# A note in a non-diff discussion on an issue, merge request, commit, or snippet.
+#
+# A note of this type can be resolvable.
+class DiscussionNote < Note
+  # Names of all implementers of `Noteable` that support discussions.
+  NOTEABLE_TYPES = %w(MergeRequest Issue Commit Snippet).freeze
+
+  validates :noteable_type, inclusion: { in: NOTEABLE_TYPES }
+
+  def discussion_class(*)
+    Discussion
+  end
+end