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-rw-r--r--activerecord/lib/active_record/railties/console_sandbox.rb2
-rw-r--r--activerecord/lib/active_record/railties/controller_runtime.rb2
-rw-r--r--activerecord/lib/active_record/railties/databases.rake2
-rw-r--r--activerecord/lib/active_record/railties/jdbcmysql_error.rb2
4 files changed, 8 insertions, 0 deletions
diff --git a/activerecord/lib/active_record/railties/console_sandbox.rb b/activerecord/lib/active_record/railties/console_sandbox.rb
index 604a220303..8917638a5d 100644
--- a/activerecord/lib/active_record/railties/console_sandbox.rb
+++ b/activerecord/lib/active_record/railties/console_sandbox.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
ActiveRecord::Base.connection.begin_transaction(joinable: false)
at_exit do
diff --git a/activerecord/lib/active_record/railties/controller_runtime.rb b/activerecord/lib/active_record/railties/controller_runtime.rb
index 4030cdc158..3cf66980a5 100644
--- a/activerecord/lib/active_record/railties/controller_runtime.rb
+++ b/activerecord/lib/active_record/railties/controller_runtime.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
require "active_support/core_ext/module/attr_internal"
require_relative "../log_subscriber"
diff --git a/activerecord/lib/active_record/railties/databases.rake b/activerecord/lib/active_record/railties/databases.rake
index abc7323341..691b3612d8 100644
--- a/activerecord/lib/active_record/railties/databases.rake
+++ b/activerecord/lib/active_record/railties/databases.rake
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
require "active_record"
db_namespace = namespace :db do
diff --git a/activerecord/lib/active_record/railties/jdbcmysql_error.rb b/activerecord/lib/active_record/railties/jdbcmysql_error.rb
index d7cf4df339..72c75ddd52 100644
--- a/activerecord/lib/active_record/railties/jdbcmysql_error.rb
+++ b/activerecord/lib/active_record/railties/jdbcmysql_error.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
#FIXME Remove if ArJdbcMysql will give.
module ArJdbcMySQL #:nodoc:
class Error < StandardError #:nodoc: