Improvements¶ ↑

• Database#copy_into in the jdbc/postgresql adapter now works correctly when using multibyte characters in strings.

• The alter_table add_foreign_key method is now reversible when the :foreign_key_constraint_name option is used.

• The jdbc/h2 and jdbc/hsqldb adapters now respect the :foreign_key_constraint_name option.

• Calling Model.freeze on an already frozen model no longer raises an error.

• An unnecessary database query is now avoided when loading the pg_inet extension when the pg_array extension is already loaded.

• A better exception message is now used when migrating with an empty migration directory.

Backwards Compatibility¶ ↑

• Model.allowed_columns has been removed. Use the whitelist_security plugin if you want to call it.

• Model use_after_commit_rollback class and instance accessors have been removed.

• Support for the Model#_before_validation method has been removed.

• The private Model.plugin_module_defined? method has been removed.