Ensure settings are created when you access them

app/models/project.rb

@@ -190,7 +190,7 @@ class Project < ApplicationRecord
   has_one :error_tracking_setting, inverse_of: :project, class_name: 'ErrorTracking::ProjectErrorTrackingSetting'
   has_one :metrics_setting, inverse_of: :project, class_name: 'ProjectMetricsSetting'
   has_one :grafana_integration, inverse_of: :project
-  has_one :settings, inverse_of: :project, class_name: 'ProjectSettings'
+  has_one :settings, ->(project) { where_or_create_by(project: project) }, inverse_of: :project, class_name: 'ProjectSettings'
 
   # Merge Requests for target project should be removed with it
   has_many :merge_requests, foreign_key: 'target_project_id', inverse_of: :target_project

app/models/project_settings.rb

@@ -4,4 +4,8 @@ class ProjectSettings < ApplicationRecord
   belongs_to :project, inverse_of: :settings
 
   self.primary_key = :project_id
+
+  def self.where_or_create_by(attrs)
+    where(primary_key => safe_find_or_create_by(attrs))
+  end
 end

spec/models/project_spec.rb

@@ -156,6 +156,12 @@ describe Project do
         expect(project.pages_metadatum).to be_an_instance_of(ProjectPagesMetadatum)
         expect(project.pages_metadatum).to be_persisted
       end
+
+      it 'creates settings if needed when accessed' do
+        expect do
+          expect(project.settings).to be_persisted
+        end.to change { ProjectSettings.count }.by(1)
+      end
     end
 
     context 'updating cd_cd_settings' do