Inherit from ApplicationRecord instead of ActiveRecord::Base

149 files changed, 150 insertions, 150 deletions

diff --git a/app/models/abuse_report.rb b/app/models/abuse_report.rb
index 1b78fd04ebb..a3a1748142f 100644
--- a/app/models/abuse_report.rb
+++ b/app/models/abuse_report.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class AbuseReport < ActiveRecord::Base
+class AbuseReport < ApplicationRecord
   include CacheMarkdownField
 
   cache_markdown_field :message, pipeline: :single_line
diff --git a/app/models/appearance.rb b/app/models/appearance.rb
index bdee9b2b73c..2815a117f7f 100644
--- a/app/models/appearance.rb
+++ b/app/models/appearance.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class Appearance < ActiveRecord::Base
+class Appearance < ApplicationRecord
   include CacheableAttributes
   include CacheMarkdownField
   include ObjectStorage::BackgroundMove
diff --git a/app/models/application_setting.rb b/app/models/application_setting.rb
index 9cc7c0a1b97..9e91e4ab4b9 100644
--- a/app/models/application_setting.rb
+++ b/app/models/application_setting.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class ApplicationSetting < ActiveRecord::Base
+class ApplicationSetting < ApplicationRecord
   include CacheableAttributes
   include CacheMarkdownField
   include TokenAuthenticatable
diff --git a/app/models/application_setting/term.rb b/app/models/application_setting/term.rb
index 498701ba22b..723540c9b91 100644
--- a/app/models/application_setting/term.rb
+++ b/app/models/application_setting/term.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 class ApplicationSetting
-  class Term < ActiveRecord::Base
+  class Term < ApplicationRecord
     include CacheMarkdownField
     has_many :term_agreements
 
diff --git a/app/models/audit_event.rb b/app/models/audit_event.rb
index 8508c88d406..6ef2914ac11 100644
--- a/app/models/audit_event.rb
+++ b/app/models/audit_event.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class AuditEvent < ActiveRecord::Base
+class AuditEvent < ApplicationRecord
   serialize :details, Hash # rubocop:disable Cop/ActiveRecordSerialize
 
   belongs_to :user, foreign_key: :author_id
diff --git a/app/models/award_emoji.rb b/app/models/award_emoji.rb
index ddc516ccb60..e26162f6151 100644
--- a/app/models/award_emoji.rb
+++ b/app/models/award_emoji.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class AwardEmoji < ActiveRecord::Base
+class AwardEmoji < ApplicationRecord
   DOWNVOTE_NAME = "thumbsdown".freeze
   UPVOTE_NAME   = "thumbsup".freeze
 
diff --git a/app/models/badge.rb b/app/models/badge.rb
index f016654206b..a244ed473de 100644
--- a/app/models/badge.rb
+++ b/app/models/badge.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class Badge < ActiveRecord::Base
+class Badge < ApplicationRecord
   include FromUnion
 
   # This structure sets the placeholders that the urls
diff --git a/app/models/board.rb b/app/models/board.rb
index 758a71d6903..e08db764f65 100644
--- a/app/models/board.rb
+++ b/app/models/board.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class Board < ActiveRecord::Base
+class Board < ApplicationRecord
   belongs_to :group
   belongs_to :project
 
diff --git a/app/models/board_group_recent_visit.rb b/app/models/board_group_recent_visit.rb
index f5b75270595..2f1cd830791 100644
--- a/app/models/board_group_recent_visit.rb
+++ b/app/models/board_group_recent_visit.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 # Tracks which boards in a specific group a user has visited
-class BoardGroupRecentVisit < ActiveRecord::Base
+class BoardGroupRecentVisit < ApplicationRecord
   belongs_to :user
   belongs_to :group
   belongs_to :board
diff --git a/app/models/board_project_recent_visit.rb b/app/models/board_project_recent_visit.rb
index 2a1b14b3ae0..236d88e909c 100644
--- a/app/models/board_project_recent_visit.rb
+++ b/app/models/board_project_recent_visit.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 # Tracks which boards in a specific project a user has visited
-class BoardProjectRecentVisit < ActiveRecord::Base
+class BoardProjectRecentVisit < ApplicationRecord
   belongs_to :user
   belongs_to :project
   belongs_to :board
diff --git a/app/models/broadcast_message.rb b/app/models/broadcast_message.rb
index 1c95abdd9ee..18fe2a9624f 100644
--- a/app/models/broadcast_message.rb
+++ b/app/models/broadcast_message.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class BroadcastMessage < ActiveRecord::Base
+class BroadcastMessage < ApplicationRecord
   include CacheMarkdownField
   include Sortable
 
diff --git a/app/models/chat_name.rb b/app/models/chat_name.rb
index 03b0af53046..0041595baba 100644
--- a/app/models/chat_name.rb
+++ b/app/models/chat_name.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class ChatName < ActiveRecord::Base
+class ChatName < ApplicationRecord
   LAST_USED_AT_INTERVAL = 1.hour
 
   belongs_to :service
diff --git a/app/models/chat_team.rb b/app/models/chat_team.rb
index 4e724f9adf7..52b5a7b4a91 100644
--- a/app/models/chat_team.rb
+++ b/app/models/chat_team.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class ChatTeam < ActiveRecord::Base
+class ChatTeam < ApplicationRecord
   validates :team_id, presence: true
   validates :namespace, uniqueness: true
 
diff --git a/app/models/ci/build_metadata.rb b/app/models/ci/build_metadata.rb
index cd8eb774cf5..f281cbd1d6f 100644
--- a/app/models/ci/build_metadata.rb
+++ b/app/models/ci/build_metadata.rb
@@ -3,7 +3,7 @@
 module Ci
   # The purpose of this class is to store Build related data that can be disposed.
   # Data that should be persisted forever, should be stored with Ci::Build model.
-  class BuildMetadata < ActiveRecord::Base
+  class BuildMetadata < ApplicationRecord
     extend Gitlab::Ci::Model
     include Presentable
     include ChronicDurationAttribute
diff --git a/app/models/ci/build_runner_session.rb b/app/models/ci/build_runner_session.rb
index 457d7eeab6a..061eff090f5 100644
--- a/app/models/ci/build_runner_session.rb
+++ b/app/models/ci/build_runner_session.rb
@@ -3,7 +3,7 @@
 module Ci
   # The purpose of this class is to store Build related runner session.
   # Data will be removed after transitioning from running to any state.
-  class BuildRunnerSession < ActiveRecord::Base
+  class BuildRunnerSession < ApplicationRecord
     extend Gitlab::Ci::Model
 
     self.table_name = 'ci_builds_runner_session'
diff --git a/app/models/ci/build_trace_chunk.rb b/app/models/ci/build_trace_chunk.rb
index 75017f224a0..0a7a0e0772b 100644
--- a/app/models/ci/build_trace_chunk.rb
+++ b/app/models/ci/build_trace_chunk.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 module Ci
-  class BuildTraceChunk < ActiveRecord::Base
+  class BuildTraceChunk < ApplicationRecord
     include FastDestroyAll
     include ::Gitlab::ExclusiveLeaseHelpers
     extend Gitlab::Ci::Model
diff --git a/app/models/ci/build_trace_section.rb b/app/models/ci/build_trace_section.rb
index a4bee59c83b..8be42eb48d6 100644
--- a/app/models/ci/build_trace_section.rb
+++ b/app/models/ci/build_trace_section.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 module Ci
-  class BuildTraceSection < ActiveRecord::Base
+  class BuildTraceSection < ApplicationRecord
     extend Gitlab::Ci::Model
 
     belongs_to :build, class_name: 'Ci::Build'
diff --git a/app/models/ci/build_trace_section_name.rb b/app/models/ci/build_trace_section_name.rb
index cbdf3c4b673..c065cfea14e 100644
--- a/app/models/ci/build_trace_section_name.rb
+++ b/app/models/ci/build_trace_section_name.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 module Ci
-  class BuildTraceSectionName < ActiveRecord::Base
+  class BuildTraceSectionName < ApplicationRecord
     extend Gitlab::Ci::Model
 
     belongs_to :project
diff --git a/app/models/ci/group_variable.rb b/app/models/ci/group_variable.rb
index 323ff560564..0e50265c7ba 100644
--- a/app/models/ci/group_variable.rb
+++ b/app/models/ci/group_variable.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 module Ci
-  class GroupVariable < ActiveRecord::Base
+  class GroupVariable < ApplicationRecord
     extend Gitlab::Ci::Model
     include HasVariable
     include Presentable
diff --git a/app/models/ci/job_artifact.rb b/app/models/ci/job_artifact.rb
index 789bb293811..99512a7c1dd 100644
--- a/app/models/ci/job_artifact.rb
+++ b/app/models/ci/job_artifact.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 module Ci
-  class JobArtifact < ActiveRecord::Base
+  class JobArtifact < ApplicationRecord
     include AfterCommitQueue
     include ObjectStorage::BackgroundMove
     extend Gitlab::Ci::Model
diff --git a/app/models/ci/pipeline.rb b/app/models/ci/pipeline.rb
index 826b3f82bbf..41f380cc1e4 100644
--- a/app/models/ci/pipeline.rb
+++ b/app/models/ci/pipeline.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 module Ci
-  class Pipeline < ActiveRecord::Base
+  class Pipeline < ApplicationRecord
     extend Gitlab::Ci::Model
     include HasStatus
     include Importable
@@ -184,7 +184,7 @@ module Ci
 
     scope :sort_by_merge_request_pipelines, -> do
       sql = 'CASE ci_pipelines.source WHEN (?) THEN 0 ELSE 1 END, ci_pipelines.id DESC'
-      query = ActiveRecord::Base.send(:sanitize_sql_array, [sql, sources[:merge_request_event]]) # rubocop:disable GitlabSecurity/PublicSend
+      query = ApplicationRecord.send(:sanitize_sql_array, [sql, sources[:merge_request_event]]) # rubocop:disable GitlabSecurity/PublicSend
 
       order(query)
     end
diff --git a/app/models/ci/pipeline_chat_data.rb b/app/models/ci/pipeline_chat_data.rb
index 8d37500fec5..65466a8c6f8 100644
--- a/app/models/ci/pipeline_chat_data.rb
+++ b/app/models/ci/pipeline_chat_data.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 module Ci
-  class PipelineChatData < ActiveRecord::Base
+  class PipelineChatData < ApplicationRecord
     self.table_name = 'ci_pipeline_chat_data'
 
     belongs_to :chat_name
diff --git a/app/models/ci/pipeline_schedule.rb b/app/models/ci/pipeline_schedule.rb
index 1c1f203bdb2..1454b2dfb39 100644
--- a/app/models/ci/pipeline_schedule.rb
+++ b/app/models/ci/pipeline_schedule.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 module Ci
-  class PipelineSchedule < ActiveRecord::Base
+  class PipelineSchedule < ApplicationRecord
     extend Gitlab::Ci::Model
     include Importable
     include IgnorableColumn
diff --git a/app/models/ci/pipeline_schedule_variable.rb b/app/models/ci/pipeline_schedule_variable.rb
index fbb9987cab2..be6e5e76c31 100644
--- a/app/models/ci/pipeline_schedule_variable.rb
+++ b/app/models/ci/pipeline_schedule_variable.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 module Ci
-  class PipelineScheduleVariable < ActiveRecord::Base
+  class PipelineScheduleVariable < ApplicationRecord
     extend Gitlab::Ci::Model
     include HasVariable
 
diff --git a/app/models/ci/pipeline_variable.rb b/app/models/ci/pipeline_variable.rb
index 08514d6af4e..51a6272e1ff 100644
--- a/app/models/ci/pipeline_variable.rb
+++ b/app/models/ci/pipeline_variable.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 module Ci
-  class PipelineVariable < ActiveRecord::Base
+  class PipelineVariable < ApplicationRecord
     extend Gitlab::Ci::Model
     include HasVariable
 
diff --git a/app/models/ci/runner.rb b/app/models/ci/runner.rb
index 43f040a91ae..07d00503861 100644
--- a/app/models/ci/runner.rb
+++ b/app/models/ci/runner.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 module Ci
-  class Runner < ActiveRecord::Base
+  class Runner < ApplicationRecord
     extend Gitlab::Ci::Model
     include Gitlab::SQL::Pattern
     include IgnorableColumn
diff --git a/app/models/ci/runner_namespace.rb b/app/models/ci/runner_namespace.rb
index 22b80b98551..6903e8a21a1 100644
--- a/app/models/ci/runner_namespace.rb
+++ b/app/models/ci/runner_namespace.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 module Ci
-  class RunnerNamespace < ActiveRecord::Base
+  class RunnerNamespace < ApplicationRecord
     extend Gitlab::Ci::Model
 
     belongs_to :runner, inverse_of: :runner_namespaces, validate: true
diff --git a/app/models/ci/runner_project.rb b/app/models/ci/runner_project.rb
index 1a718d24141..f5bd50dc5a3 100644
--- a/app/models/ci/runner_project.rb
+++ b/app/models/ci/runner_project.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 module Ci
-  class RunnerProject < ActiveRecord::Base
+  class RunnerProject < ApplicationRecord
     extend Gitlab::Ci::Model
 
     belongs_to :runner, inverse_of: :runner_projects
diff --git a/app/models/ci/stage.rb b/app/models/ci/stage.rb
index 098f5189517..b25b0369666 100644
--- a/app/models/ci/stage.rb
+++ b/app/models/ci/stage.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 module Ci
-  class Stage < ActiveRecord::Base
+  class Stage < ApplicationRecord
     extend Gitlab::Ci::Model
     include Importable
     include HasStatus
diff --git a/app/models/ci/trigger.rb b/app/models/ci/trigger.rb
index 637148c4ce4..8927bb9bc18 100644
--- a/app/models/ci/trigger.rb
+++ b/app/models/ci/trigger.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 module Ci
-  class Trigger < ActiveRecord::Base
+  class Trigger < ApplicationRecord
     extend Gitlab::Ci::Model
     include IgnorableColumn
     include Presentable
diff --git a/app/models/ci/trigger_request.rb b/app/models/ci/trigger_request.rb
index 0b52c690e93..5daf3dd192d 100644
--- a/app/models/ci/trigger_request.rb
+++ b/app/models/ci/trigger_request.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 module Ci
-  class TriggerRequest < ActiveRecord::Base
+  class TriggerRequest < ApplicationRecord
     extend Gitlab::Ci::Model
 
     belongs_to :trigger
diff --git a/app/models/ci/variable.rb b/app/models/ci/variable.rb
index 64836ea4fa4..a77bbef0fca 100644
--- a/app/models/ci/variable.rb
+++ b/app/models/ci/variable.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 module Ci
-  class Variable < ActiveRecord::Base
+  class Variable < ApplicationRecord
     extend Gitlab::Ci::Model
     include HasVariable
     include Presentable
diff --git a/app/models/clusters/applications/cert_manager.rb b/app/models/clusters/applications/cert_manager.rb
index c758577815a..ac0e7eb03bc 100644
--- a/app/models/clusters/applications/cert_manager.rb
+++ b/app/models/clusters/applications/cert_manager.rb
@@ -2,7 +2,7 @@
 
 module Clusters
   module Applications
-    class CertManager < ActiveRecord::Base
+    class CertManager < ApplicationRecord
       VERSION = 'v0.5.2'.freeze
 
       self.table_name = 'clusters_applications_cert_managers'
diff --git a/app/models/clusters/applications/helm.rb b/app/models/clusters/applications/helm.rb
index 423071ec024..71aff00077d 100644
--- a/app/models/clusters/applications/helm.rb
+++ b/app/models/clusters/applications/helm.rb
@@ -4,7 +4,7 @@ require 'openssl'
 
 module Clusters
   module Applications
-    class Helm < ActiveRecord::Base
+    class Helm < ApplicationRecord
       self.table_name = 'clusters_applications_helm'
 
       attr_encrypted :ca_key,
diff --git a/app/models/clusters/applications/ingress.rb b/app/models/clusters/applications/ingress.rb
index 567f1a2267f..376d54aab2c 100644
--- a/app/models/clusters/applications/ingress.rb
+++ b/app/models/clusters/applications/ingress.rb
@@ -2,7 +2,7 @@
 
 module Clusters
   module Applications
-    class Ingress < ActiveRecord::Base
+    class Ingress < ApplicationRecord
       VERSION = '1.1.2'.freeze
 
       self.table_name = 'clusters_applications_ingress'
diff --git a/app/models/clusters/applications/jupyter.rb b/app/models/clusters/applications/jupyter.rb
index 7efcc175f9f..f86ff3551a1 100644
--- a/app/models/clusters/applications/jupyter.rb
+++ b/app/models/clusters/applications/jupyter.rb
@@ -2,7 +2,7 @@
 
 module Clusters
   module Applications
-    class Jupyter < ActiveRecord::Base
+    class Jupyter < ApplicationRecord
       VERSION = '0.9-174bbd5'.freeze
 
       self.table_name = 'clusters_applications_jupyter'
diff --git a/app/models/clusters/applications/knative.rb b/app/models/clusters/applications/knative.rb
index 8afd548f3e3..f7e54833296 100644
--- a/app/models/clusters/applications/knative.rb
+++ b/app/models/clusters/applications/knative.rb
@@ -2,7 +2,7 @@
 
 module Clusters
   module Applications
-    class Knative < ActiveRecord::Base
+    class Knative < ApplicationRecord
       VERSION = '0.3.0'.freeze
       REPOSITORY = 'https://storage.googleapis.com/triggermesh-charts'.freeze
       METRICS_CONFIG = 'https://storage.googleapis.com/triggermesh-charts/istio-metrics.yaml'.freeze
diff --git a/app/models/clusters/applications/prometheus.rb b/app/models/clusters/applications/prometheus.rb
index fa7ce363531..954c29da196 100644
--- a/app/models/clusters/applications/prometheus.rb
+++ b/app/models/clusters/applications/prometheus.rb
@@ -2,7 +2,7 @@
 
 module Clusters
   module Applications
-    class Prometheus < ActiveRecord::Base
+    class Prometheus < ApplicationRecord
       include PrometheusAdapter
 
       VERSION = '6.7.3'
diff --git a/app/models/clusters/applications/runner.rb b/app/models/clusters/applications/runner.rb
index ec8f5cc40c0..8cb81bfcbe4 100644
--- a/app/models/clusters/applications/runner.rb
+++ b/app/models/clusters/applications/runner.rb
@@ -2,7 +2,7 @@
 
 module Clusters
   module Applications
-    class Runner < ActiveRecord::Base
+    class Runner < ApplicationRecord
       VERSION = '0.3.0'.freeze
 
       self.table_name = 'clusters_applications_runners'
diff --git a/app/models/clusters/cluster.rb b/app/models/clusters/cluster.rb
index 5156c7d7514..d9dec680beb 100644
--- a/app/models/clusters/cluster.rb
+++ b/app/models/clusters/cluster.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 module Clusters
-  class Cluster < ActiveRecord::Base
+  class Cluster < ApplicationRecord
     include Presentable
     include Gitlab::Utils::StrongMemoize
     include FromUnion
diff --git a/app/models/clusters/group.rb b/app/models/clusters/group.rb
index 2b08a9e47f0..27f39b53579 100644
--- a/app/models/clusters/group.rb
+++ b/app/models/clusters/group.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 module Clusters
-  class Group < ActiveRecord::Base
+  class Group < ApplicationRecord
     self.table_name = 'cluster_groups'
 
     belongs_to :cluster, class_name: 'Clusters::Cluster'
diff --git a/app/models/clusters/kubernetes_namespace.rb b/app/models/clusters/kubernetes_namespace.rb
index 7fc75e00cd0..b0c4900546e 100644
--- a/app/models/clusters/kubernetes_namespace.rb
+++ b/app/models/clusters/kubernetes_namespace.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 module Clusters
-  class KubernetesNamespace < ActiveRecord::Base
+  class KubernetesNamespace < ApplicationRecord
     include Gitlab::Kubernetes
 
     self.table_name = 'clusters_kubernetes_namespaces'
diff --git a/app/models/clusters/platforms/kubernetes.rb b/app/models/clusters/platforms/kubernetes.rb
index 7786b48429c..63ef7ba6b45 100644
--- a/app/models/clusters/platforms/kubernetes.rb
+++ b/app/models/clusters/platforms/kubernetes.rb
@@ -2,7 +2,7 @@
 
 module Clusters
   module Platforms
-    class Kubernetes < ActiveRecord::Base
+    class Kubernetes < ApplicationRecord
       include Gitlab::Kubernetes
       include ReactiveCaching
       include EnumWithNil
diff --git a/app/models/clusters/project.rb b/app/models/clusters/project.rb
index 15092b1c9d2..d2b68b3f117 100644
--- a/app/models/clusters/project.rb
+++ b/app/models/clusters/project.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 module Clusters
-  class Project < ActiveRecord::Base
+  class Project < ApplicationRecord
     self.table_name = 'cluster_projects'
 
     belongs_to :cluster, class_name: 'Clusters::Cluster'
diff --git a/app/models/clusters/providers/gcp.rb b/app/models/clusters/providers/gcp.rb
index 16b59cd9d14..390748bf252 100644
--- a/app/models/clusters/providers/gcp.rb
+++ b/app/models/clusters/providers/gcp.rb
@@ -2,7 +2,7 @@
 
 module Clusters
   module Providers
-    class Gcp < ActiveRecord::Base
+    class Gcp < ApplicationRecord
       self.table_name = 'cluster_providers_gcp'
 
       belongs_to :cluster, inverse_of: :provider_gcp, class_name: 'Clusters::Cluster'
diff --git a/app/models/commit_status.rb b/app/models/commit_status.rb
index 5f66a661324..f97dc38dab7 100644
--- a/app/models/commit_status.rb
+++ b/app/models/commit_status.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class CommitStatus < ActiveRecord::Base
+class CommitStatus < ApplicationRecord
   include HasStatus
   include Importable
   include AfterCommitQueue
diff --git a/app/models/concerns/atomic_internal_id.rb b/app/models/concerns/atomic_internal_id.rb
index 4e15b60ccd1..ab3d9e923c0 100644
--- a/app/models/concerns/atomic_internal_id.rb
+++ b/app/models/concerns/atomic_internal_id.rb
@@ -7,7 +7,7 @@
 #
 # For example, let's generate internal ids for Issue per Project:
 # ```
-# class Issue < ActiveRecord::Base
+# class Issue < ApplicationRecord
 #   has_internal_id :iid, scope: :project, init: ->(s) { s.project.issues.maximum(:iid) }
 # end
 # ```
diff --git a/app/models/concerns/ignorable_column.rb b/app/models/concerns/ignorable_column.rb
index 5c1f7dfcd2a..3bec44dc79b 100644
--- a/app/models/concerns/ignorable_column.rb
+++ b/app/models/concerns/ignorable_column.rb
@@ -5,7 +5,7 @@
 #
 # Example:
 #
-#     class User < ActiveRecord::Base
+#     class User < ApplicationRecord
 #       include IgnorableColumn
 #
 #       ignore_column :updated_at
diff --git a/app/models/concerns/participable.rb b/app/models/concerns/participable.rb
index 614c3242874..b140fca9b83 100644
--- a/app/models/concerns/participable.rb
+++ b/app/models/concerns/participable.rb
@@ -7,7 +7,7 @@
 #
 # Usage:
 #
-#     class Issue < ActiveRecord::Base
+#     class Issue < ApplicationRecord
 #       include Participable
 #
 #       # ...
diff --git a/app/models/concerns/reactive_caching.rb b/app/models/concerns/reactive_caching.rb
index d2ead7130e5..1ab3b3ddc46 100644
--- a/app/models/concerns/reactive_caching.rb
+++ b/app/models/concerns/reactive_caching.rb
@@ -7,7 +7,7 @@
 #
 # Example of use:
 #
-#    class Foo < ActiveRecord::Base
+#    class Foo < ApplicationRecord
 #      include ReactiveCaching
 #
 #      self.reactive_cache_key = ->(thing) { ["foo", thing.id] }
diff --git a/app/models/concerns/sha_attribute.rb b/app/models/concerns/sha_attribute.rb
index a479bef993c..70ac873a030 100644
--- a/app/models/concerns/sha_attribute.rb
+++ b/app/models/concerns/sha_attribute.rb
@@ -39,7 +39,7 @@ module ShaAttribute
     end
 
     def database_exists?
-      ActiveRecord::Base.connection
+      ApplicationRecord.connection
 
       true
     rescue
diff --git a/app/models/concerns/strip_attribute.rb b/app/models/concerns/strip_attribute.rb
index c9f5ba7793d..8f6a6244dd3 100644
--- a/app/models/concerns/strip_attribute.rb
+++ b/app/models/concerns/strip_attribute.rb
@@ -6,7 +6,7 @@
 #
 # Usage:
 #
-#     class Milestone < ActiveRecord::Base
+#     class Milestone < ApplicationRecord
 #       strip_attributes :title
 #     end
 #
diff --git a/app/models/container_repository.rb b/app/models/container_repository.rb
index cf057d774cf..39e12ac2b06 100644
--- a/app/models/container_repository.rb
+++ b/app/models/container_repository.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class ContainerRepository < ActiveRecord::Base
+class ContainerRepository < ApplicationRecord
   include Gitlab::Utils::StrongMemoize
 
   belongs_to :project
diff --git a/app/models/conversational_development_index/metric.rb b/app/models/conversational_development_index/metric.rb
index c54537572d6..b91123be87e 100644
--- a/app/models/conversational_development_index/metric.rb
+++ b/app/models/conversational_development_index/metric.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 module ConversationalDevelopmentIndex
-  class Metric < ActiveRecord::Base
+  class Metric < ApplicationRecord
     include Presentable
 
     self.table_name = 'conversational_development_index_metrics'
diff --git a/app/models/deploy_keys_project.rb b/app/models/deploy_keys_project.rb
index 71fd02fac86..15906ed8e06 100644
--- a/app/models/deploy_keys_project.rb
+++ b/app/models/deploy_keys_project.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class DeployKeysProject < ActiveRecord::Base
+class DeployKeysProject < ApplicationRecord
   belongs_to :project
   belongs_to :deploy_key, inverse_of: :deploy_keys_projects
 
diff --git a/app/models/deploy_token.rb b/app/models/deploy_token.rb
index e3524305346..b0e570f52ba 100644
--- a/app/models/deploy_token.rb
+++ b/app/models/deploy_token.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class DeployToken < ActiveRecord::Base
+class DeployToken < ApplicationRecord
   include Expirable
   include TokenAuthenticatable
   include PolicyActor
diff --git a/app/models/deployment.rb b/app/models/deployment.rb
index 428edfd88de..d847a0a11e4 100644
--- a/app/models/deployment.rb
+++ b/app/models/deployment.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class Deployment < ActiveRecord::Base
+class Deployment < ApplicationRecord
   include AtomicInternalId
   include IidRoutes
   include AfterCommitQueue
diff --git a/app/models/email.rb b/app/models/email.rb
index 7c33c5c7e64..0ddaa049c3b 100644
--- a/app/models/email.rb
+++ b/app/models/email.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class Email < ActiveRecord::Base
+class Email < ApplicationRecord
   include Sortable
   include Gitlab::SQL::Pattern
 
diff --git a/app/models/environment.rb b/app/models/environment.rb
index 3d909cc8e5c..25373c7a1f7 100644
--- a/app/models/environment.rb
+++ b/app/models/environment.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class Environment < ActiveRecord::Base
+class Environment < ApplicationRecord
   include Gitlab::Utils::StrongMemoize
   # Used to generate random suffixes for the slug
   LETTERS = 'a'..'z'
diff --git a/app/models/epic.rb b/app/models/epic.rb
index ccd10593434..3693db1de33 100644
--- a/app/models/epic.rb
+++ b/app/models/epic.rb
@@ -2,7 +2,7 @@
 
 # Placeholder class for model that is implemented in EE
 # It reserves '&' as a reference prefix, but the table does not exists in CE
-class Epic < ActiveRecord::Base
+class Epic < ApplicationRecord
   def self.link_reference_pattern
     nil
   end
diff --git a/app/models/error_tracking/project_error_tracking_setting.rb b/app/models/error_tracking/project_error_tracking_setting.rb
index 1e2bd3bda7f..8edc04cc268 100644
--- a/app/models/error_tracking/project_error_tracking_setting.rb
+++ b/app/models/error_tracking/project_error_tracking_setting.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 module ErrorTracking
-  class ProjectErrorTrackingSetting < ActiveRecord::Base
+  class ProjectErrorTrackingSetting < ApplicationRecord
     include Gitlab::Utils::StrongMemoize
     include ReactiveCaching
 
diff --git a/app/models/event.rb b/app/models/event.rb
index 6a35bca72c5..593acf5edfe 100644
--- a/app/models/event.rb
+++ b/app/models/event.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class Event < ActiveRecord::Base
+class Event < ApplicationRecord
   include Sortable
   include IgnorableColumn
   include FromUnion
diff --git a/app/models/fork_network.rb b/app/models/fork_network.rb
index 1b9bf93cbbc..0323a8d222a 100644
--- a/app/models/fork_network.rb
+++ b/app/models/fork_network.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class ForkNetwork < ActiveRecord::Base
+class ForkNetwork < ApplicationRecord
   belongs_to :root_project, class_name: 'Project'
   has_many :fork_network_members
   has_many :projects, through: :fork_network_members
diff --git a/app/models/fork_network_member.rb b/app/models/fork_network_member.rb
index 36c66f21b0b..f18c306cf91 100644
--- a/app/models/fork_network_member.rb
+++ b/app/models/fork_network_member.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class ForkNetworkMember < ActiveRecord::Base
+class ForkNetworkMember < ApplicationRecord
   belongs_to :fork_network
   belongs_to :project
   belongs_to :forked_from_project, class_name: 'Project'
diff --git a/app/models/gpg_key.rb b/app/models/gpg_key.rb
index 077afffd358..116beac5c2a 100644
--- a/app/models/gpg_key.rb
+++ b/app/models/gpg_key.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class GpgKey < ActiveRecord::Base
+class GpgKey < ApplicationRecord
   KEY_PREFIX = '-----BEGIN PGP PUBLIC KEY BLOCK-----'.freeze
   KEY_SUFFIX = '-----END PGP PUBLIC KEY BLOCK-----'.freeze
 
diff --git a/app/models/gpg_key_subkey.rb b/app/models/gpg_key_subkey.rb
index 440b588bc78..110bf451136 100644
--- a/app/models/gpg_key_subkey.rb
+++ b/app/models/gpg_key_subkey.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class GpgKeySubkey < ActiveRecord::Base
+class GpgKeySubkey < ApplicationRecord
   include ShaAttribute
 
   sha_attribute :keyid
diff --git a/app/models/group_custom_attribute.rb b/app/models/group_custom_attribute.rb
index 22f14885657..5ac6e5f2550 100644
--- a/app/models/group_custom_attribute.rb
+++ b/app/models/group_custom_attribute.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class GroupCustomAttribute < ActiveRecord::Base
+class GroupCustomAttribute < ApplicationRecord
   belongs_to :group
 
   validates :group, :key, :value, presence: true
diff --git a/app/models/hooks/web_hook.rb b/app/models/hooks/web_hook.rb
index 1a8662db9fb..daf7ff4b771 100644
--- a/app/models/hooks/web_hook.rb
+++ b/app/models/hooks/web_hook.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class WebHook < ActiveRecord::Base
+class WebHook < ApplicationRecord
   include Sortable
 
   attr_encrypted :token,
diff --git a/app/models/hooks/web_hook_log.rb b/app/models/hooks/web_hook_log.rb
index 2d9f7594e8c..cfb1f3ec63b 100644
--- a/app/models/hooks/web_hook_log.rb
+++ b/app/models/hooks/web_hook_log.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class WebHookLog < ActiveRecord::Base
+class WebHookLog < ApplicationRecord
   belongs_to :web_hook
 
   serialize :request_headers, Hash # rubocop:disable Cop/ActiveRecordSerialize
diff --git a/app/models/identity.rb b/app/models/identity.rb
index acdde4f296b..8322b9bf35f 100644
--- a/app/models/identity.rb
+++ b/app/models/identity.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class Identity < ActiveRecord::Base
+class Identity < ApplicationRecord
   include Sortable
   include CaseSensitivity
 
diff --git a/app/models/identity/uniqueness_scopes.rb b/app/models/identity/uniqueness_scopes.rb
index 674b735903f..ce68371ae87 100644
--- a/app/models/identity/uniqueness_scopes.rb
+++ b/app/models/identity/uniqueness_scopes.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class Identity < ActiveRecord::Base
+class Identity < ApplicationRecord
   # This module and method are defined in a separate file to allow EE to
   # redefine the `scopes` method before it is used in the `Identity` model.
   module UniquenessScopes
diff --git a/app/models/import_export_upload.rb b/app/models/import_export_upload.rb
index f0cc5aafcd4..60f5491849a 100644
--- a/app/models/import_export_upload.rb
+++ b/app/models/import_export_upload.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class ImportExportUpload < ActiveRecord::Base
+class ImportExportUpload < ApplicationRecord
   include WithUploads
   include ObjectStorage::BackgroundMove
 
diff --git a/app/models/internal_id.rb b/app/models/internal_id.rb
index e75c6eb2331..3f2d368a3f2 100644
--- a/app/models/internal_id.rb
+++ b/app/models/internal_id.rb
@@ -15,7 +15,7 @@
 # In order to leverage InternalId for other usages, the idea is to
 # * Add `usage` value to enum
 # * (Optionally) add columns to `internal_ids` if needed for scope.
-class InternalId < ActiveRecord::Base
+class InternalId < ApplicationRecord
   belongs_to :project
   belongs_to :namespace
 
diff --git a/app/models/issue.rb b/app/models/issue.rb
index deab53d25e7..97c6dcc4745 100644
--- a/app/models/issue.rb
+++ b/app/models/issue.rb
@@ -2,7 +2,7 @@
 
 require 'carrierwave/orm/activerecord'
 
-class Issue < ActiveRecord::Base
+class Issue < ApplicationRecord
   include AtomicInternalId
   include IidRoutes
   include Issuable
diff --git a/app/models/issue/metrics.rb b/app/models/issue/metrics.rb
index 0f5ee957ec9..8010cbc3d78 100644
--- a/app/models/issue/metrics.rb
+++ b/app/models/issue/metrics.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class Issue::Metrics < ActiveRecord::Base
+class Issue::Metrics < ApplicationRecord
   belongs_to :issue
 
   def record!
diff --git a/app/models/issue_assignee.rb b/app/models/issue_assignee.rb
index 400c0256945..fbd9be1fb43 100644
--- a/app/models/issue_assignee.rb
+++ b/app/models/issue_assignee.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class IssueAssignee < ActiveRecord::Base
+class IssueAssignee < ApplicationRecord
   belongs_to :issue
   belongs_to :assignee, class_name: "User", foreign_key: :user_id
 end
diff --git a/app/models/key.rb b/app/models/key.rb
index 8f93418b88b..b097be8cc89 100644
--- a/app/models/key.rb
+++ b/app/models/key.rb
@@ -2,7 +2,7 @@
 
 require 'digest/md5'
 
-class Key < ActiveRecord::Base
+class Key < ApplicationRecord
   include AfterCommitQueue
   include Sortable
 
diff --git a/app/models/label.rb b/app/models/label.rb
index 96bdb7f17c5..024daeb4fae 100644
--- a/app/models/label.rb
+++ b/app/models/label.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class Label < ActiveRecord::Base
+class Label < ApplicationRecord
   include CacheMarkdownField
   include Referable
   include Subscribable
diff --git a/app/models/label_link.rb b/app/models/label_link.rb
index 1d93a55e8e9..ffc0afd8e85 100644
--- a/app/models/label_link.rb
+++ b/app/models/label_link.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class LabelLink < ActiveRecord::Base
+class LabelLink < ApplicationRecord
   include Importable
 
   belongs_to :target, polymorphic: true, inverse_of: :label_links # rubocop:disable Cop/PolymorphicAssociations
diff --git a/app/models/label_priority.rb b/app/models/label_priority.rb
index 8ed8bb7577f..8f8f36efbfe 100644
--- a/app/models/label_priority.rb
+++ b/app/models/label_priority.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class LabelPriority < ActiveRecord::Base
+class LabelPriority < ApplicationRecord
   belongs_to :project
   belongs_to :label
 
diff --git a/app/models/lfs_file_lock.rb b/app/models/lfs_file_lock.rb
index 431d37e12e9..624b1d02e1a 100644
--- a/app/models/lfs_file_lock.rb
+++ b/app/models/lfs_file_lock.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class LfsFileLock < ActiveRecord::Base
+class LfsFileLock < ApplicationRecord
   belongs_to :project
   belongs_to :user
 
diff --git a/app/models/lfs_object.rb b/app/models/lfs_object.rb
index 69c563545bb..e1aac691a64 100644
--- a/app/models/lfs_object.rb
+++ b/app/models/lfs_object.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class LfsObject < ActiveRecord::Base
+class LfsObject < ApplicationRecord
   include AfterCommitQueue
   include ObjectStorage::BackgroundMove
 
diff --git a/app/models/lfs_objects_project.rb b/app/models/lfs_objects_project.rb
index 353602800d7..f9afb18c1d7 100644
--- a/app/models/lfs_objects_project.rb
+++ b/app/models/lfs_objects_project.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class LfsObjectsProject < ActiveRecord::Base
+class LfsObjectsProject < ApplicationRecord
   belongs_to :project
   belongs_to :lfs_object
 
diff --git a/app/models/list.rb b/app/models/list.rb
index 682af761ba0..17b1a8510cf 100644
--- a/app/models/list.rb
+++ b/app/models/list.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class List < ActiveRecord::Base
+class List < ApplicationRecord
   belongs_to :board
   belongs_to :label
 
diff --git a/app/models/member.rb b/app/models/member.rb
index 5dbc0c2eec9..8a06bff51b5 100644
--- a/app/models/member.rb
+++ b/app/models/member.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class Member < ActiveRecord::Base
+class Member < ApplicationRecord
   include AfterCommitQueue
   include Sortable
   include Importable
diff --git a/app/models/merge_request.rb b/app/models/merge_request.rb
index 19557fd476e..fdfe6ca614a 100644
--- a/app/models/merge_request.rb
+++ b/app/models/merge_request.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class MergeRequest < ActiveRecord::Base
+class MergeRequest < ApplicationRecord
   include AtomicInternalId
   include IidRoutes
   include Issuable
diff --git a/app/models/merge_request/metrics.rb b/app/models/merge_request/metrics.rb
index 65e94a97b0a..05f8e18a2c1 100644
--- a/app/models/merge_request/metrics.rb
+++ b/app/models/merge_request/metrics.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class MergeRequest::Metrics < ActiveRecord::Base
+class MergeRequest::Metrics < ApplicationRecord
   belongs_to :merge_request
   belongs_to :pipeline, class_name: 'Ci::Pipeline', foreign_key: :pipeline_id
   belongs_to :latest_closed_by, class_name: 'User'
diff --git a/app/models/merge_request_diff.rb b/app/models/merge_request_diff.rb
index 2143571d1d4..ac8d3b98266 100644
--- a/app/models/merge_request_diff.rb
+++ b/app/models/merge_request_diff.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class MergeRequestDiff < ActiveRecord::Base
+class MergeRequestDiff < ApplicationRecord
   include Sortable
   include Importable
   include ManualInverseAssociation
diff --git a/app/models/merge_request_diff_commit.rb b/app/models/merge_request_diff_commit.rb
index 4ad3690512d..b897bbc8cf5 100644
--- a/app/models/merge_request_diff_commit.rb
+++ b/app/models/merge_request_diff_commit.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class MergeRequestDiffCommit < ActiveRecord::Base
+class MergeRequestDiffCommit < ApplicationRecord
   include ShaAttribute
 
   belongs_to :merge_request_diff
diff --git a/app/models/merge_request_diff_file.rb b/app/models/merge_request_diff_file.rb
index 16ec4ed470f..01ee82ae398 100644
--- a/app/models/merge_request_diff_file.rb
+++ b/app/models/merge_request_diff_file.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class MergeRequestDiffFile < ActiveRecord::Base
+class MergeRequestDiffFile < ApplicationRecord
   include Gitlab::EncodingHelper
   include DiffFile
 
diff --git a/app/models/merge_requests_closing_issues.rb b/app/models/merge_requests_closing_issues.rb
index 242b65bedc0..61af50841ee 100644
--- a/app/models/merge_requests_closing_issues.rb
+++ b/app/models/merge_requests_closing_issues.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class MergeRequestsClosingIssues < ActiveRecord::Base
+class MergeRequestsClosingIssues < ApplicationRecord
   belongs_to :merge_request
   belongs_to :issue
 
diff --git a/app/models/milestone.rb b/app/models/milestone.rb
index a3831ae3fa8..b4aad9e512e 100644
--- a/app/models/milestone.rb
+++ b/app/models/milestone.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class Milestone < ActiveRecord::Base
+class Milestone < ApplicationRecord
   # Represents a "No Milestone" state used for filtering Issues and Merge
   # Requests that have no milestone assigned.
   MilestoneStruct = Struct.new(:title, :name, :id)
diff --git a/app/models/note.rb b/app/models/note.rb
index 2c9980b1a0d..081d6f91230 100644
--- a/app/models/note.rb
+++ b/app/models/note.rb
@@ -3,7 +3,7 @@
 # A note on the root of an issue, merge request, commit, or snippet.
 #
 # A note of this type is never resolvable.
-class Note < ActiveRecord::Base
+class Note < ApplicationRecord
   extend ActiveModel::Naming
   include Participable
   include Mentionable
diff --git a/app/models/note_diff_file.rb b/app/models/note_diff_file.rb
index e369122003e..9afb94c869a 100644
--- a/app/models/note_diff_file.rb
+++ b/app/models/note_diff_file.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class NoteDiffFile < ActiveRecord::Base
+class NoteDiffFile < ApplicationRecord
   include DiffFile
 
   scope :for_commit_or_unresolved, -> do
diff --git a/app/models/notification_setting.rb b/app/models/notification_setting.rb
index e82eaf4e069..61af5c09ae4 100644
--- a/app/models/notification_setting.rb
+++ b/app/models/notification_setting.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class NotificationSetting < ActiveRecord::Base
+class NotificationSetting < ApplicationRecord
   include IgnorableColumn
 
   ignore_column :events
diff --git a/app/models/pages_domain.rb b/app/models/pages_domain.rb
index 7a33ade826b..82901ceec01 100644
--- a/app/models/pages_domain.rb
+++ b/app/models/pages_domain.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class PagesDomain < ActiveRecord::Base
+class PagesDomain < ApplicationRecord
   VERIFICATION_KEY = 'gitlab-pages-verification-code'.freeze
   VERIFICATION_THRESHOLD = 3.days.freeze
 
diff --git a/app/models/personal_access_token.rb b/app/models/personal_access_token.rb
index ed78a46eaf3..570112b63b7 100644
--- a/app/models/personal_access_token.rb
+++ b/app/models/personal_access_token.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class PersonalAccessToken < ActiveRecord::Base
+class PersonalAccessToken < ApplicationRecord
   include Expirable
   include IgnorableColumn
   include TokenAuthenticatable
diff --git a/app/models/pool_repository.rb b/app/models/pool_repository.rb
index 4635fc72dc7..35c718365b4 100644
--- a/app/models/pool_repository.rb
+++ b/app/models/pool_repository.rb
@@ -3,7 +3,7 @@
 # The PoolRepository model is the database equivalent of an ObjectPool for Gitaly
 # That is; PoolRepository is the record in the database, ObjectPool is the
 # repository on disk
-class PoolRepository < ActiveRecord::Base
+class PoolRepository < ApplicationRecord
   include Shardable
   include AfterCommitQueue
 
diff --git a/app/models/postgresql/replication_slot.rb b/app/models/postgresql/replication_slot.rb
index e264fe88e47..74ccf23cf69 100644
--- a/app/models/postgresql/replication_slot.rb
+++ b/app/models/postgresql/replication_slot.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 module Postgresql
-  class ReplicationSlot < ActiveRecord::Base
+  class ReplicationSlot < ApplicationRecord
     self.table_name = 'pg_replication_slots'
 
     # Returns true if there are any replication slots in use.
diff --git a/app/models/programming_language.rb b/app/models/programming_language.rb
index 5f0f313b7f9..375fbe9b5a9 100644
--- a/app/models/programming_language.rb
+++ b/app/models/programming_language.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class ProgrammingLanguage < ActiveRecord::Base
+class ProgrammingLanguage < ApplicationRecord
   validates :name, presence: true
   validates :color, allow_blank: false, color: true
 
diff --git a/app/models/project.rb b/app/models/project.rb
index 06010409574..82c2f9090c8 100644
--- a/app/models/project.rb
+++ b/app/models/project.rb
@@ -2,7 +2,7 @@
 
 require 'carrierwave/orm/activerecord'
 
-class Project < ActiveRecord::Base
+class Project < ApplicationRecord
   include Gitlab::ConfigHelper
   include Gitlab::ShellAdapter
   include Gitlab::VisibilityLevel
diff --git a/app/models/project_authorization.rb b/app/models/project_authorization.rb
index 2c590008db2..f95d3ab54e2 100644
--- a/app/models/project_authorization.rb
+++ b/app/models/project_authorization.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class ProjectAuthorization < ActiveRecord::Base
+class ProjectAuthorization < ApplicationRecord
   include FromUnion
 
   belongs_to :user
diff --git a/app/models/project_auto_devops.rb b/app/models/project_auto_devops.rb
index e353a6443c4..f972c40f317 100644
--- a/app/models/project_auto_devops.rb
+++ b/app/models/project_auto_devops.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class ProjectAutoDevops < ActiveRecord::Base
+class ProjectAutoDevops < ApplicationRecord
   belongs_to :project
 
   enum deploy_strategy: {
diff --git a/app/models/project_ci_cd_setting.rb b/app/models/project_ci_cd_setting.rb
index 1dad235cc2b..1414164b703 100644
--- a/app/models/project_ci_cd_setting.rb
+++ b/app/models/project_ci_cd_setting.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class ProjectCiCdSetting < ActiveRecord::Base
+class ProjectCiCdSetting < ApplicationRecord
   belongs_to :project, inverse_of: :ci_cd_settings
 
   # The version of the schema that first introduced this model/table.
diff --git a/app/models/project_custom_attribute.rb b/app/models/project_custom_attribute.rb
index 4e767cb3b26..b0da586988a 100644
--- a/app/models/project_custom_attribute.rb
+++ b/app/models/project_custom_attribute.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class ProjectCustomAttribute < ActiveRecord::Base
+class ProjectCustomAttribute < ApplicationRecord
   belongs_to :project
 
   validates :project, :key, :value, presence: true
diff --git a/app/models/project_daily_statistic.rb b/app/models/project_daily_statistic.rb
index ff115dd010f..5ee11ab186e 100644
--- a/app/models/project_daily_statistic.rb
+++ b/app/models/project_daily_statistic.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class ProjectDailyStatistic < ActiveRecord::Base
+class ProjectDailyStatistic < ApplicationRecord
   belongs_to :project
 
   scope :of_project, -> (project) { where(project: project) }
diff --git a/app/models/project_deploy_token.rb b/app/models/project_deploy_token.rb
index 719c492a1ff..a55667496fb 100644
--- a/app/models/project_deploy_token.rb
+++ b/app/models/project_deploy_token.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class ProjectDeployToken < ActiveRecord::Base
+class ProjectDeployToken < ApplicationRecord
   belongs_to :project
   belongs_to :deploy_token, inverse_of: :project_deploy_tokens
 
diff --git a/app/models/project_feature.rb b/app/models/project_feature.rb
index e6787236c4e..0542581c6e0 100644
--- a/app/models/project_feature.rb
+++ b/app/models/project_feature.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class ProjectFeature < ActiveRecord::Base
+class ProjectFeature < ApplicationRecord
   # == Project features permissions
   #
   # Grants access level to project tools
diff --git a/app/models/project_group_link.rb b/app/models/project_group_link.rb
index bc3759142ae..58b555c3581 100644
--- a/app/models/project_group_link.rb
+++ b/app/models/project_group_link.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class ProjectGroupLink < ActiveRecord::Base
+class ProjectGroupLink < ApplicationRecord
   include Expirable
 
   GUEST     = 10
diff --git a/app/models/project_import_data.rb b/app/models/project_import_data.rb
index aa0c121fe99..580e8dfd833 100644
--- a/app/models/project_import_data.rb
+++ b/app/models/project_import_data.rb
@@ -2,7 +2,7 @@
 
 require 'carrierwave/orm/activerecord'
 
-class ProjectImportData < ActiveRecord::Base
+class ProjectImportData < ApplicationRecord
   belongs_to :project, inverse_of: :import_data
   attr_encrypted :credentials,
                  key: Settings.attr_encrypted_db_key_base,
diff --git a/app/models/project_import_state.rb b/app/models/project_import_state.rb
index 488f0cb5971..1605345efd5 100644
--- a/app/models/project_import_state.rb
+++ b/app/models/project_import_state.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class ProjectImportState < ActiveRecord::Base
+class ProjectImportState < ApplicationRecord
   include AfterCommitQueue
 
   self.table_name = "project_mirror_data"
diff --git a/app/models/project_repository.rb b/app/models/project_repository.rb
index 38913f3f2f5..092efabd73f 100644
--- a/app/models/project_repository.rb
+++ b/app/models/project_repository.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class ProjectRepository < ActiveRecord::Base
+class ProjectRepository < ApplicationRecord
   include Shardable
 
   belongs_to :project, inverse_of: :project_repository
diff --git a/app/models/project_statistics.rb b/app/models/project_statistics.rb
index 781a197d56f..c020e72908c 100644
--- a/app/models/project_statistics.rb
+++ b/app/models/project_statistics.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class ProjectStatistics < ActiveRecord::Base
+class ProjectStatistics < ApplicationRecord
   belongs_to :project
   belongs_to :namespace
 
diff --git a/app/models/prometheus_metric.rb b/app/models/prometheus_metric.rb
index 5594594a48d..62090444f79 100644
--- a/app/models/prometheus_metric.rb
+++ b/app/models/prometheus_metric.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class PrometheusMetric < ActiveRecord::Base
+class PrometheusMetric < ApplicationRecord
   belongs_to :project, validate: true, inverse_of: :prometheus_metrics
 
   enum group: {
diff --git a/app/models/protected_branch.rb b/app/models/protected_branch.rb
index 597431be65a..ee0c94c20af 100644
--- a/app/models/protected_branch.rb
+++ b/app/models/protected_branch.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class ProtectedBranch < ActiveRecord::Base
+class ProtectedBranch < ApplicationRecord
   include ProtectedRef
 
   protected_ref_access_levels :merge, :push
diff --git a/app/models/protected_branch/merge_access_level.rb b/app/models/protected_branch/merge_access_level.rb
index b0d5c64e931..de240e40316 100644
--- a/app/models/protected_branch/merge_access_level.rb
+++ b/app/models/protected_branch/merge_access_level.rb
@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
-class ProtectedBranch::MergeAccessLevel < ActiveRecord::Base
+class ProtectedBranch::MergeAccessLevel < ApplicationRecord
   include ProtectedBranchAccess
 end
diff --git a/app/models/protected_branch/push_access_level.rb b/app/models/protected_branch/push_access_level.rb
index b2a88229853..bde1d29ad7f 100644
--- a/app/models/protected_branch/push_access_level.rb
+++ b/app/models/protected_branch/push_access_level.rb
@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
-class ProtectedBranch::PushAccessLevel < ActiveRecord::Base
+class ProtectedBranch::PushAccessLevel < ApplicationRecord
   include ProtectedBranchAccess
 end
diff --git a/app/models/protected_tag.rb b/app/models/protected_tag.rb
index d28ebabfe49..6b507429e57 100644
--- a/app/models/protected_tag.rb
+++ b/app/models/protected_tag.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class ProtectedTag < ActiveRecord::Base
+class ProtectedTag < ApplicationRecord
   include ProtectedRef
 
   validates :name, uniqueness: { scope: :project_id }
diff --git a/app/models/protected_tag/create_access_level.rb b/app/models/protected_tag/create_access_level.rb
index b06e55fb5dd..9fcfa7646a2 100644
--- a/app/models/protected_tag/create_access_level.rb
+++ b/app/models/protected_tag/create_access_level.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class ProtectedTag::CreateAccessLevel < ActiveRecord::Base
+class ProtectedTag::CreateAccessLevel < ApplicationRecord
   include ProtectedTagAccess
 
   def check_access(user)
diff --git a/app/models/push_event_payload.rb b/app/models/push_event_payload.rb
index c7769edf055..537859ec7b7 100644
--- a/app/models/push_event_payload.rb
+++ b/app/models/push_event_payload.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class PushEventPayload < ActiveRecord::Base
+class PushEventPayload < ApplicationRecord
   include ShaAttribute
 
   belongs_to :event, inverse_of: :push_event_payload
diff --git a/app/models/redirect_route.rb b/app/models/redirect_route.rb
index c6bd4bb6dfa..2e4769364c6 100644
--- a/app/models/redirect_route.rb
+++ b/app/models/redirect_route.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class RedirectRoute < ActiveRecord::Base
+class RedirectRoute < ApplicationRecord
   belongs_to :source, polymorphic: true # rubocop:disable Cop/PolymorphicAssociations
 
   validates :source, presence: true
diff --git a/app/models/release.rb b/app/models/release.rb
index 0dae5c90394..746fc31a038 100644
--- a/app/models/release.rb
+++ b/app/models/release.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class Release < ActiveRecord::Base
+class Release < ApplicationRecord
   include CacheMarkdownField
   include Gitlab::Utils::StrongMemoize
 
diff --git a/app/models/releases/link.rb b/app/models/releases/link.rb
index 6c507c47752..36ec33d3e3e 100644
--- a/app/models/releases/link.rb
+++ b/app/models/releases/link.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 module Releases
-  class Link < ActiveRecord::Base
+  class Link < ApplicationRecord
     self.table_name = 'release_links'
 
     belongs_to :release
diff --git a/app/models/remote_mirror.rb b/app/models/remote_mirror.rb
index 5eba7ddd75c..5610cfe0f24 100644
--- a/app/models/remote_mirror.rb
+++ b/app/models/remote_mirror.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class RemoteMirror < ActiveRecord::Base
+class RemoteMirror < ApplicationRecord
   include AfterCommitQueue
   include MirrorAuthentication
 
diff --git a/app/models/repository_language.rb b/app/models/repository_language.rb
index b18142a2ac4..e6867f905e2 100644
--- a/app/models/repository_language.rb
+++ b/app/models/repository_language.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class RepositoryLanguage < ActiveRecord::Base
+class RepositoryLanguage < ApplicationRecord
   belongs_to :project
   belongs_to :programming_language
 
diff --git a/app/models/resource_label_event.rb b/app/models/resource_label_event.rb
index 3fd96b9dc18..f2c7cb6a65d 100644
--- a/app/models/resource_label_event.rb
+++ b/app/models/resource_label_event.rb
@@ -2,7 +2,7 @@
 
 # This model is not used yet, it will be used for:
 # https://gitlab.com/gitlab-org/gitlab-ce/issues/48483
-class ResourceLabelEvent < ActiveRecord::Base
+class ResourceLabelEvent < ApplicationRecord
   include Importable
   include Gitlab::Utils::StrongMemoize
   include CacheMarkdownField
diff --git a/app/models/route.rb b/app/models/route.rb
index 4b23dfa5778..7e3db54d4fe 100644
--- a/app/models/route.rb
+++ b/app/models/route.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class Route < ActiveRecord::Base
+class Route < ApplicationRecord
   include CaseSensitivity
 
   belongs_to :source, polymorphic: true # rubocop:disable Cop/PolymorphicAssociations
diff --git a/app/models/sent_notification.rb b/app/models/sent_notification.rb
index 6caab24143b..0427d5b9ca7 100644
--- a/app/models/sent_notification.rb
+++ b/app/models/sent_notification.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class SentNotification < ActiveRecord::Base
+class SentNotification < ApplicationRecord
   serialize :position, Gitlab::Diff::Position # rubocop:disable Cop/ActiveRecordSerialize
 
   belongs_to :project
diff --git a/app/models/service.rb b/app/models/service.rb
index da523bfa426..c6d5eb353dc 100644
--- a/app/models/service.rb
+++ b/app/models/service.rb
@@ -2,7 +2,7 @@
 
 # To add new service you should build a class inherited from Service
 # and implement a set of methods
-class Service < ActiveRecord::Base
+class Service < ApplicationRecord
   include Sortable
   include Importable
   include ProjectServicesLoggable
diff --git a/app/models/shard.rb b/app/models/shard.rb
index e39d4232486..335a279c6aa 100644
--- a/app/models/shard.rb
+++ b/app/models/shard.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class Shard < ActiveRecord::Base
+class Shard < ApplicationRecord
   # Store shard names from the configuration file in the database. This is not a
   # list of active shards - we just want to assign an immutable, unique ID to
   # every shard name for easy indexing / referencing.
diff --git a/app/models/snippet.rb b/app/models/snippet.rb
index f23ddd64fe3..f4fdac2558c 100644
--- a/app/models/snippet.rb
+++ b/app/models/snippet.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class Snippet < ActiveRecord::Base
+class Snippet < ApplicationRecord
   include Gitlab::VisibilityLevel
   include Redactable
   include CacheMarkdownField
diff --git a/app/models/spam_log.rb b/app/models/spam_log.rb
index ef3f974b959..5b9ece8373f 100644
--- a/app/models/spam_log.rb
+++ b/app/models/spam_log.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class SpamLog < ActiveRecord::Base
+class SpamLog < ApplicationRecord
   belongs_to :user
 
   validates :user, presence: true
diff --git a/app/models/subscription.rb b/app/models/subscription.rb
index 0f6ee0ddf7e..24a2b8b5167 100644
--- a/app/models/subscription.rb
+++ b/app/models/subscription.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class Subscription < ActiveRecord::Base
+class Subscription < ApplicationRecord
   belongs_to :user
   belongs_to :project
   belongs_to :subscribable, polymorphic: true # rubocop:disable Cop/PolymorphicAssociations
diff --git a/app/models/system_note_metadata.rb b/app/models/system_note_metadata.rb
index d555ebe5322..55da37c9545 100644
--- a/app/models/system_note_metadata.rb
+++ b/app/models/system_note_metadata.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class SystemNoteMetadata < ActiveRecord::Base
+class SystemNoteMetadata < ApplicationRecord
   # These notes's action text might contain a reference that is external.
   # We should always force a deep validation upon references that are found
   # in this note type.
diff --git a/app/models/term_agreement.rb b/app/models/term_agreement.rb
index 9b3c8ac68bd..a4a9dc10282 100644
--- a/app/models/term_agreement.rb
+++ b/app/models/term_agreement.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class TermAgreement < ActiveRecord::Base
+class TermAgreement < ApplicationRecord
   belongs_to :term, class_name: 'ApplicationSetting::Term'
   belongs_to :user
 
diff --git a/app/models/timelog.rb b/app/models/timelog.rb
index e04c644a53a..048134fbf04 100644
--- a/app/models/timelog.rb
+++ b/app/models/timelog.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class Timelog < ActiveRecord::Base
+class Timelog < ApplicationRecord
   validates :time_spent, :user, presence: true
   validate :issuable_id_is_present
 
diff --git a/app/models/todo.rb b/app/models/todo.rb
index 2b0dee875a3..5dcc3e9945a 100644
--- a/app/models/todo.rb
+++ b/app/models/todo.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class Todo < ActiveRecord::Base
+class Todo < ApplicationRecord
   include Sortable
   include FromUnion
 
diff --git a/app/models/trending_project.rb b/app/models/trending_project.rb
index 7b22e8cb760..810dee672b2 100644
--- a/app/models/trending_project.rb
+++ b/app/models/trending_project.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class TrendingProject < ActiveRecord::Base
+class TrendingProject < ApplicationRecord
   belongs_to :project
 
   # The number of months to include in the trending calculation.
diff --git a/app/models/u2f_registration.rb b/app/models/u2f_registration.rb
index 37598173fd1..b4645462314 100644
--- a/app/models/u2f_registration.rb
+++ b/app/models/u2f_registration.rb
@@ -2,7 +2,7 @@
 
 # Registration information for U2F (universal 2nd factor) devices, like Yubikeys
 
-class U2fRegistration < ActiveRecord::Base
+class U2fRegistration < ApplicationRecord
   belongs_to :user
 
   def self.register(user, app_id, params, challenges)
diff --git a/app/models/upload.rb b/app/models/upload.rb
index 20860f14b83..9bffdcdb2e7 100644
--- a/app/models/upload.rb
+++ b/app/models/upload.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class Upload < ActiveRecord::Base
+class Upload < ApplicationRecord
   # Upper limit for foreground checksum processing
   CHECKSUM_THRESHOLD = 100.megabytes
 
diff --git a/app/models/user.rb b/app/models/user.rb
index d2be26370ff..e0c518a9b75 100644
--- a/app/models/user.rb
+++ b/app/models/user.rb
@@ -432,7 +432,7 @@ class User < ApplicationRecord
         fuzzy_arel_match(:name, query, lower_exact_match: true)
           .or(fuzzy_arel_match(:username, query, lower_exact_match: true))
           .or(arel_table[:email].eq(query))
-      ).reorder(order % { query: ActiveRecord::Base.connection.quote(query) }, :name)
+      ).reorder(order % { query: ApplicationRecord.connection.quote(query) }, :name)
     end
 
     # Limits the result set to users _not_ in the given query/list of IDs.
diff --git a/app/models/user_agent_detail.rb b/app/models/user_agent_detail.rb
index e2b2e7f1df9..fea1fce3c8d 100644
--- a/app/models/user_agent_detail.rb
+++ b/app/models/user_agent_detail.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class UserAgentDetail < ActiveRecord::Base
+class UserAgentDetail < ApplicationRecord
   belongs_to :subject, polymorphic: true # rubocop:disable Cop/PolymorphicAssociations
 
   validates :user_agent, :ip_address, :subject_id, :subject_type, presence: true
diff --git a/app/models/user_callout.rb b/app/models/user_callout.rb
index 76e7bc06b4e..027ee44c6a9 100644
--- a/app/models/user_callout.rb
+++ b/app/models/user_callout.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class UserCallout < ActiveRecord::Base
+class UserCallout < ApplicationRecord
   belongs_to :user
 
   # We use `UserCalloutEnums.feature_names` here so that EE can more easily
diff --git a/app/models/user_custom_attribute.rb b/app/models/user_custom_attribute.rb
index e0ffe8ebbfd..727975c3f6e 100644
--- a/app/models/user_custom_attribute.rb
+++ b/app/models/user_custom_attribute.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class UserCustomAttribute < ActiveRecord::Base
+class UserCustomAttribute < ApplicationRecord
   belongs_to :user
 
   validates :user_id, :key, :value, presence: true
diff --git a/app/models/user_interacted_project.rb b/app/models/user_interacted_project.rb
index 5fc59b274f5..f6f72f4b77a 100644
--- a/app/models/user_interacted_project.rb
+++ b/app/models/user_interacted_project.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class UserInteractedProject < ActiveRecord::Base
+class UserInteractedProject < ApplicationRecord
   belongs_to :user
   belongs_to :project
 
diff --git a/app/models/user_preference.rb b/app/models/user_preference.rb
index 32d0407800f..282b192167f 100644
--- a/app/models/user_preference.rb
+++ b/app/models/user_preference.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class UserPreference < ActiveRecord::Base
+class UserPreference < ApplicationRecord
   # We could use enums, but Rails 4 doesn't support multiple
   # enum options with same name for multiple fields, also it creates
   # extra methods that aren't really needed here.
diff --git a/app/models/user_status.rb b/app/models/user_status.rb
index 2bbb0c59ac1..6ced4f56823 100644
--- a/app/models/user_status.rb
+++ b/app/models/user_status.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class UserStatus < ActiveRecord::Base
+class UserStatus < ApplicationRecord
   include CacheMarkdownField
 
   self.primary_key = :user_id
diff --git a/app/models/user_synced_attributes_metadata.rb b/app/models/user_synced_attributes_metadata.rb
index 7115262942d..5aacf11b1cb 100644
--- a/app/models/user_synced_attributes_metadata.rb
+++ b/app/models/user_synced_attributes_metadata.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class UserSyncedAttributesMetadata < ActiveRecord::Base
+class UserSyncedAttributesMetadata < ApplicationRecord
   belongs_to :user
 
   validates :user, presence: true
diff --git a/app/models/users_star_project.rb b/app/models/users_star_project.rb
index bdaf58ae1c1..9be6bd2e6f3 100644
--- a/app/models/users_star_project.rb
+++ b/app/models/users_star_project.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class UsersStarProject < ActiveRecord::Base
+class UsersStarProject < ApplicationRecord
   belongs_to :project, counter_cache: :star_count, touch: true
   belongs_to :user