1 files changed, 1 insertions, 7 deletions
diff --git a/activerecord/lib/active_record/connection_adapters/abstract_mysql_adapter.rb b/activerecord/lib/active_record/connection_adapters/abstract_mysql_adapter.rb
index abc15f595f..01599985ca 100644
--- a/activerecord/lib/active_record/connection_adapters/abstract_mysql_adapter.rb
+++ b/activerecord/lib/active_record/connection_adapters/abstract_mysql_adapter.rb
@@ -29,8 +29,7 @@ module ActiveRecord
       # to your application.rb file:
       #
       #   ActiveRecord::ConnectionAdapters::Mysql2Adapter.emulate_booleans = false
-      class_attribute :emulate_booleans
-      self.emulate_booleans = true
+      class_attribute :emulate_booleans, default: true
 
       NATIVE_DATABASE_TYPES = {
         primary_key: "bigint auto_increment PRIMARY KEY",
@@ -839,11 +838,6 @@ module ActiveRecord
         end
 
         class MysqlJson < Type::Internal::AbstractJson # :nodoc:
-          def changed_in_place?(raw_old_value, new_value)
-            # Normalization is required because MySQL JSON data format includes
-            # the space between the elements.
-            super(serialize(deserialize(raw_old_value)), new_value)
-          end
         end
 
         class MysqlString < Type::String # :nodoc: