Add PipelinePresenter#related_merge_request_text

app/models/ci/pipeline.rb

@@ -746,6 +746,10 @@ module Ci
         end
     end
 
+    def all_merge_requests_by_recency
+      all_merge_requests.order(id: :desc)
+    end
+
     def detailed_status(current_user)
       Gitlab::Ci::Status::Pipeline::Factory
         .new(self, current_user)

app/presenters/ci/pipeline_presenter.rb

@@ -48,15 +48,35 @@ module Ci
 
     def ref_text
       if pipeline.detached_merge_request_pipeline?
-        _("for %{link_to_merge_request} with %{link_to_merge_request_source_branch}").html_safe % { link_to_merge_request: link_to_merge_request, link_to_merge_request_source_branch: link_to_merge_request_source_branch }
+        _("for %{link_to_merge_request} with %{link_to_merge_request_source_branch}")
+          .html_safe % {
+            link_to_merge_request: link_to_merge_request,
+            link_to_merge_request_source_branch: link_to_merge_request_source_branch
+          }
       elsif pipeline.merge_request_pipeline?
-        _("for %{link_to_merge_request} with %{link_to_merge_request_source_branch} into %{link_to_merge_request_target_branch}").html_safe % { link_to_merge_request: link_to_merge_request, link_to_merge_request_source_branch: link_to_merge_request_source_branch, link_to_merge_request_target_branch: link_to_merge_request_target_branch }
+        _("for %{link_to_merge_request} with %{link_to_merge_request_source_branch} into %{link_to_merge_request_target_branch}")
+          .html_safe % {
+            link_to_merge_request: link_to_merge_request,
+            link_to_merge_request_source_branch: link_to_merge_request_source_branch,
+            link_to_merge_request_target_branch: link_to_merge_request_target_branch
+          }
+      elsif pipeline.ref && pipeline.ref_exists?
+        _("for %{link_to_pipeline_ref}")
+        .html_safe % { link_to_pipeline_ref: link_to_pipeline_ref }
       elsif pipeline.ref
-        if pipeline.ref_exists?
-          _("for %{link_to_pipeline_ref}").html_safe % { link_to_pipeline_ref: link_to_pipeline_ref }
-        else
-          _("for %{ref}").html_safe % { ref: content_tag(:span, pipeline.ref, class: 'ref-name') }
-        end
+        _("for %{ref}").html_safe % { ref: plain_ref_name }
+      end
+    end
+
+    def all_related_merge_request_text
+      if all_related_merge_requests.none?
+        'No related merge requests found.'
+      else
+        _("%{count} related %{pluralized_subject}: %{links}" % {
+          count: all_related_merge_requests.count,
+          pluralized_subject: 'merge request'.pluralize(all_related_merge_requests.count),
+          links: all_related_merge_request_links.join(', ')
+        }).html_safe
       end
     end
 
@@ -84,10 +104,30 @@ module Ci
 
     private
 
+    def plain_ref_name
+      content_tag(:span, pipeline.ref, class: 'ref-name')
+    end
+
     def merge_request_presenter
-      return unless pipeline.triggered_by_merge_request?
+      strong_memoize(:merge_request_presenter) do
+        if pipeline.triggered_by_merge_request?
+          pipeline.merge_request.present(current_user: current_user)
+        end
+      end
+    end
 
-      @merge_request_presenter ||= pipeline.merge_request.present(current_user: current_user)
+    def all_related_merge_request_links
+      all_related_merge_requests.map do |merge_request|
+        mr_path = project_merge_request_path(merge_request.project, merge_request)
+
+        link_to "#{merge_request.to_reference} #{merge_request.title}", mr_path, class: 'mr-iid'
+      end
+    end
+
+    def all_related_merge_requests
+      strong_memoize(:all_related_merge_requests) do
+        pipeline.ref ? pipeline.all_merge_requests_by_recency.to_a : []
+      end
     end
   end
 end

changelogs/unreleased/mr-links-4-pipes.yml

+---
+title: Use MR links in PipelinePresenter#ref_text for branch pipelines
+merge_request: 17947
+author:
+type: changed

locale/gitlab.pot

@@ -223,6 +223,9 @@ msgid_plural "%{count} pending comments"
 msgstr[0] ""
 msgstr[1] ""
 
+msgid "%{count} related %{pluralized_subject}: %{links}"
+msgstr ""
+
 msgid "%{duration}ms"
 msgstr ""
 

spec/presenters/ci/pipeline_presenter_spec.rb

@@ -176,6 +176,44 @@ describe Ci::PipelinePresenter do
     end
   end
 
+  describe '#all_related_merge_request_text' do
+    subject { presenter.all_related_merge_request_text }
+
+    context 'with zero related merge requests (branch pipeline)' do
+      it { is_expected.to eq('No related merge requests found.') }
+    end
+
+    context 'with one related merge request' do
+      let!(:mr_1) { create(:merge_request, project: project, source_project: project) }
+
+      it {
+        is_expected.to eq("1 related merge request: " \
+          "<a class=\"mr-iid\" href=\"#{merge_request_path(mr_1)}\">#{mr_1.to_reference} #{mr_1.title}</a>")
+      }
+    end
+
+    context 'with two related merge requests' do
+      let!(:mr_1) { create(:merge_request, project: project, source_project: project, target_branch: 'staging') }
+      let!(:mr_2) { create(:merge_request, project: project, source_project: project, target_branch: 'feature') }
+
+      it {
+        is_expected.to eq("2 related merge requests: " \
+          "<a class=\"mr-iid\" href=\"#{merge_request_path(mr_2)}\">#{mr_2.to_reference} #{mr_2.title}</a>, " \
+          "<a class=\"mr-iid\" href=\"#{merge_request_path(mr_1)}\">#{mr_1.to_reference} #{mr_1.title}</a>")
+      }
+    end
+  end
+
+  describe '#all_related_merge_requests' do
+    it 'memoizes the returned relation' do
+      query_count = ActiveRecord::QueryRecorder.new do
+        2.times { presenter.send(:all_related_merge_requests).count }
+      end.count
+
+      expect(query_count).to eq(1)
+    end
+  end
+
   describe '#link_to_merge_request' do
     subject { presenter.link_to_merge_request }