Move where clause to scopes in Issue model

app/models/issue.rb

@@ -65,6 +65,8 @@ class Issue < ApplicationRecord
   scope :with_project_grafana_integration, -> { includes(project: :grafana_integration).where(projects: { grafana_integrations: { enabled: true } } ) }
   scope :with_api_entity_associations, -> { preload(:timelogs, :assignees, :author, :notes, :labels, project: [:route, { namespace: :route }] ) }
 
+  scope :grafana_embedded, -> { where(Issue.arel_table[:description_html].matches('%data-dashboard-url%'))
+
   scope :public_only, -> { where(confidential: false) }
   scope :confidential_only, -> { where(confidential: true) }
 

lib/gitlab/grafana_embed_usage_data.rb

@@ -4,9 +4,7 @@ module Gitlab
   class GrafanaEmbedUsageData
     class << self
       def issue_count
-        Issue.with_project_grafana_integration.where(
-          Issue.arel_table[:description_html].matches('%data-dashboard-url%')
-        ).count
+        Issue.with_project_grafana_integration.grafana_embedded.count
       end
     end
   end