Reduce number of database queries on builds tab

CHANGELOG

@@ -12,6 +12,7 @@ v 8.12.0 (unreleased)
 
 v 8.11.2 (unreleased)
   - Show "Create Merge Request" widget for push events to fork projects on the source project
+  - Reduce number of database queries on builds tab
 
 v 8.11.1 (unreleased)
   - Does not halt the GitHub import process when an error occurs

app/models/ci/build.rb

@@ -352,7 +352,7 @@ module Ci
     end
 
     def artifacts?
-      !artifacts_expired? && artifacts_file.exists?
+      !artifacts_expired? && self[:artifacts_file].present?
     end
 
     def artifacts_metadata?

app/models/ci/pipeline.rb

@@ -83,7 +83,7 @@ module Ci
     end
 
     def stages_with_latest_statuses
-      statuses.latest.order(:stage_idx).group_by(&:stage)
+      statuses.latest.includes(project: :namespace).order(:stage_idx).group_by(&:stage)
     end
 
     def project_id

app/models/commit_status.rb

@@ -25,6 +25,8 @@ class CommitStatus < ActiveRecord::Base
   scope :retried, -> { where.not(id: latest) }
   scope :ordered, -> { order(:name) }
   scope :ignored, -> { where(allow_failure: true, status: [:failed, :canceled]) }
+  scope :latest_ci_stages, -> { latest.ordered.includes(project: :namespace) }
+  scope :retried_ci_stages, -> { retried.ordered.includes(project: :namespace) }
 
   state_machine :status do
     event :enqueue do

app/views/projects/commit/_ci_stage.html.haml

@@ -8,8 +8,8 @@
       - if stage
          
         = stage.titleize
-  = render statuses.latest.ordered, coverage: @project.build_coverage_enabled?, stage: false, ref: false, allow_retry: true
-  = render statuses.retried.ordered, coverage: @project.build_coverage_enabled?, stage: false, ref: false, retried: true
+  = render statuses.latest_ci_stages, coverage: @project.build_coverage_enabled?, stage: false, ref: false, allow_retry: true
+  = render statuses.retried_ci_stages, coverage: @project.build_coverage_enabled?, stage: false, ref: false, retried: true
   %tr
     %td{colspan: 10}