Add data to commented_by

Adds a simple lookup for note authors who are approvers for an
MR.

app/models/concerns/issuable.rb

@@ -61,6 +61,8 @@ module Issuable
       end
     end
 
+    has_many :note_authors, -> { distinct }, through: :notes, source: :author
+
     has_many :label_links, as: :target, dependent: :destroy, inverse_of: :target # rubocop:disable Cop/ActiveRecordDependent
     has_many :labels, through: :label_links
     has_many :todos, as: :target, dependent: :destroy # rubocop:disable Cop/ActiveRecordDependent

ee/app/models/approval_wrapped_rule.rb

@@ -76,7 +76,7 @@ class ApprovalWrappedRule
 
   def commented_approvers
     strong_memoize(:commented_approvers) do
-      []
+      merge_request.note_authors & approvers
     end
   end
 

ee/changelogs/unreleased/commented-by-3.yml

+---
+title: Add commented_by to approval_settings endpoint
+merge_request: 39237
+author:
+type: added

ee/spec/models/approval_wrapped_rule_spec.rb

@@ -139,9 +139,17 @@ RSpec.describe ApprovalWrappedRule do
   end
 
   describe "#commented_approvers" do
+    let(:rule) { create(:approval_project_rule, project: merge_request.project, approvals_required: approvals_required, users: [approver1, approver3]) }
+
     it "returns an array" do
       expect(subject.commented_approvers).to be_an(Array)
     end
+
+    it "returns an array of approvers who have commented" do
+      create(:note, project: merge_request.project, noteable: merge_request, author: approver1)
+
+      expect(subject.commented_approvers).to eq([approver1])
+    end
   end
 
   describe '#unactioned_approvers' do

spec/lib/gitlab/import_export/all_models.yml

@@ -47,6 +47,7 @@ issues:
 - alert_management_alert
 - status_page_published_incident
 - namespace
+- note_authors
 events:
 - author
 - project
@@ -167,6 +168,7 @@ merge_requests:
 - deployments
 - user_mentions
 - system_note_metadata
+- note_authors
 external_pull_requests:
 - project
 merge_request_diff:
@@ -671,6 +673,7 @@ epic:
 - events
 - resource_label_events
 - user_mentions
+- note_authors
 epic_issue:
 - epic
 - issue

spec/models/concerns/issuable_spec.rb

@@ -17,6 +17,7 @@ RSpec.describe Issuable do
     it { is_expected.to have_many(:notes).dependent(:destroy) }
     it { is_expected.to have_many(:todos).dependent(:destroy) }
     it { is_expected.to have_many(:labels) }
+    it { is_expected.to have_many(:note_authors).through(:notes) }
 
     context 'Notes' do
       let!(:note) { create(:note, noteable: issue, project: issue.project) }