Fix signature badge on commits tab of merge request

app/controllers/projects/merge_requests_controller.rb

@@ -176,7 +176,7 @@ class Projects::MergeRequestsController < Projects::MergeRequests::ApplicationCo
     # or from cache if already merged
     @commits =
       set_commits_for_rendering(
-        @merge_request.recent_commits.with_latest_pipeline(@merge_request.source_branch).with_markdown_cache,
+        @merge_request.recent_commits(load_from_gitaly: true).with_latest_pipeline(@merge_request.source_branch).with_markdown_cache,
         commits_count: @merge_request.commits_count
       )
 

app/models/merge_request.rb

@@ -615,8 +615,8 @@ class MergeRequest < ApplicationRecord
     context_commits.count
   end
 
-  def commits(limit: nil)
-    return merge_request_diff.commits(limit: limit) if merge_request_diff.persisted?
+  def commits(limit: nil, load_from_gitaly: false)
+    return merge_request_diff.commits(limit: limit, load_from_gitaly: load_from_gitaly) if merge_request_diff.persisted?
 
     commits_arr = if compare_commits
                     reversed_commits = compare_commits.reverse
@@ -628,8 +628,8 @@ class MergeRequest < ApplicationRecord
     CommitCollection.new(source_project, commits_arr, source_branch)
   end
 
-  def recent_commits
-    commits(limit: MergeRequestDiff::COMMITS_SAFE_SIZE)
+  def recent_commits(load_from_gitaly: false)
+    commits(limit: MergeRequestDiff::COMMITS_SAFE_SIZE, load_from_gitaly: load_from_gitaly)
   end
 
   def commits_count

app/models/merge_request_diff.rb

@@ -288,9 +288,9 @@ class MergeRequestDiff < ApplicationRecord
     end
   end
 
-  def commits(limit: nil)
-    strong_memoize(:"commits_#{limit || 'all'}") do
-      load_commits(limit: limit)
+  def commits(limit: nil, load_from_gitaly: false)
+    strong_memoize(:"commits_#{limit || 'all'}_#{load_from_gitaly}") do
+      load_commits(limit: limit, load_from_gitaly: load_from_gitaly)
     end
   end
 
@@ -700,9 +700,14 @@ class MergeRequestDiff < ApplicationRecord
     end
   end
 
-  def load_commits(limit: nil)
-    commits = merge_request_diff_commits.with_users.limit(limit)
-      .map { |commit| Commit.from_hash(commit.to_hash, project) }
+  def load_commits(limit: nil, load_from_gitaly: false)
+    if load_from_gitaly
+      commits = Gitlab::Git::Commit.batch_by_oid(repository, merge_request_diff_commits.limit(limit).map(&:sha))
+      commits = Commit.decorate(commits, project)
+    else
+      commits = merge_request_diff_commits.with_users.limit(limit)
+        .map { |commit| Commit.from_hash(commit.to_hash, project) }
+    end
 
     CommitCollection
       .new(merge_request.source_project, commits, merge_request.source_branch)

spec/views/projects/merge_requests/_commits.html.haml_spec.rb

@@ -21,7 +21,7 @@ RSpec.describe 'projects/merge_requests/_commits.html.haml', :sidekiq_might_not_
     controller.prepend_view_path('app/views/projects')
 
     assign(:merge_request, merge_request)
-    assign(:commits, merge_request.commits)
+    assign(:commits, merge_request.commits(load_from_gitaly: true))
     assign(:hidden_commit_count, 0)
   end
 
@@ -34,6 +34,12 @@ RSpec.describe 'projects/merge_requests/_commits.html.haml', :sidekiq_might_not_
     expect(rendered).to have_link(href: href)
   end
 
+  it 'shows signature verification badge' do
+    render
+
+    expect(rendered).to have_css('.gpg-status-box')
+  end
+
   context 'when there are hidden commits' do
     before do
       assign(:hidden_commit_count, 1)