Merge branch '62826-graphql-note-mutations' into 'master'

GraphQL mutations for managing Notes

See merge request gitlab-org/gitlab-ce!30210

1 files changed, 11 insertions, 0 deletions

diff --git a/app/models/discussion.rb b/app/models/discussion.rb
index ae13cdfd85f..dd896f77084 100644
--- a/app/models/discussion.rb
+++ b/app/models/discussion.rb
@@ -38,6 +38,17 @@ class Discussion
     grouped_notes.values.map { |notes| build(notes, context_noteable) }
   end
 
+  def self.lazy_find(discussion_id)
+    BatchLoader.for(discussion_id).batch do |discussion_ids, loader|
+      results = Note.where(discussion_id: discussion_ids).fresh.to_a.group_by(&:discussion_id)
+      results.each do |discussion_id, notes|
+        next if notes.empty?
+
+        loader.call(discussion_id, Discussion.build(notes))
+      end
+    end
+  end
+
   # Returns an alphanumeric discussion ID based on `build_discussion_id`
   def self.discussion_id(note)
     Digest::SHA1.hexdigest(build_discussion_id(note).join("-"))