Fix N+1 in the RootController#index

ee/app/controllers/ee/dashboard/projects_controller.rb

@@ -11,6 +11,7 @@ module EE
       override :preload_associations
       def preload_associations(projects)
         super.with_compliance_framework_settings
+             .with_group_saml_provider
       end
     end
   end

ee/app/models/ee/project.rb

@@ -145,6 +145,8 @@ module EE
       scope :with_compliance_framework_settings, -> { preload(:compliance_framework_setting) }
       scope :has_vulnerabilities, -> { joins(:vulnerabilities).group(:id) }
 
+      scope :with_group_saml_provider, -> { preload(group: :saml_provider) }
+
       delegate :shared_runners_minutes, :shared_runners_seconds, :shared_runners_seconds_last_reset,
         to: :statistics, allow_nil: true
 

ee/changelogs/unreleased/fix-root-controller-n-plus-1.yml

+---
+title: Fix N+1 in the RootController#index
+merge_request: 36805
+author:
+type: performance