Count number of queries

app/controllers/projects/builds_controller.rb

@@ -19,6 +19,11 @@ class Projects::BuildsController < Projects::ApplicationController
       else
         @builds
       end
+    @builds = @builds.includes([
+      { pipeline: :project },
+      :project,
+      :tags
+    ])
     @builds = @builds.page(params[:page]).per(30)
   end
 

app/models/concerns/has_status.rb

@@ -68,7 +68,7 @@ module HasStatus
     end
 
     scope :created, -> { where(status: 'created') }
-    scope :relevant, -> { where.not(status: 'created') }
+    scope :relevant, -> { where(status: AVAILABLE_STATUSES - ['created']) }
     scope :running, -> { where(status: 'running') }
     scope :pending, -> { where(status: 'pending') }
     scope :success, -> { where(status: 'success') }

changelogs/unreleased/optimise-builds-view.yml

@@ -0,0 +1,4 @@
+---
+title: Optimise builds endpoint
+merge_request:
+author:

spec/controllers/projects/builds_controller_spec.rb

@@ -10,6 +10,39 @@ describe Projects::BuildsController do
     sign_in(user)
   end
 
+  describe 'GET index' do
+    context 'number of queries' do
+      before do
+        Ci::Build::AVAILABLE_STATUSES.each do |status|
+          create_build(status, status)
+        end
+
+        RequestStore.begin!
+      end
+
+      after do
+        RequestStore.end!
+        RequestStore.clear!
+      end
+
+      def render
+        get :index, namespace_id: project.namespace,
+                    project_id: project
+      end
+
+      it "verifies number of queries" do
+        recorded = ActiveRecord::QueryRecorder.new { render }
+        expect(recorded.count).to be_within(5).of(8)
+      end
+
+      def create_build(name, status)
+        pipeline = create(:ci_pipeline, project: project)
+        create(:ci_build, :tags, :triggered, :artifacts,
+          pipeline: pipeline, name: name, status: status)
+      end
+    end
+  end
+
   describe 'GET status.json' do
     let(:pipeline) { create(:ci_pipeline, project: project) }
     let(:build) { create(:ci_build, pipeline: pipeline) }