Inherit from ApplicationRecord instead of ActiveRecord::Base

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.

app/models/user_agent_detail.rb

 # 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

app/models/user_callout.rb

 # 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

app/models/user_custom_attribute.rb

 # frozen_string_literal: true
-class UserCustomAttribute < ActiveRecord::Base
+class UserCustomAttribute < ApplicationRecord
   belongs_to :user
   validates :user_id, :key, :value, presence: true

app/models/user_interacted_project.rb

 # frozen_string_literal: true
-class UserInteractedProject < ActiveRecord::Base
+class UserInteractedProject < ApplicationRecord
   belongs_to :user
   belongs_to :project

app/models/user_preference.rb

 # 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.

app/models/user_status.rb

 # frozen_string_literal: true
-class UserStatus < ActiveRecord::Base
+class UserStatus < ApplicationRecord
   include CacheMarkdownField
   self.primary_key = :user_id

app/models/user_synced_attributes_metadata.rb

 # frozen_string_literal: true
-class UserSyncedAttributesMetadata < ActiveRecord::Base
+class UserSyncedAttributesMetadata < ApplicationRecord
   belongs_to :user
   validates :user, presence: true

app/models/users_star_project.rb

 # frozen_string_literal: true
-class UsersStarProject < ActiveRecord::Base
+class UsersStarProject < ApplicationRecord
   belongs_to :project, counter_cache: :star_count, touch: true
   belongs_to :user