Rails 7 adds change tracking methods for belongs_to associationsRails 7 adds the ability to track if an association has been pointed to a new target record in the previous save and whether it will point to a new target record in the next save.
Rails 7 allows loading nested locales in the engineRails 7 allows loading nested locales inside the `/locales` directory by default for better organization in larger apps.
Rails 7 adds support for `if_exists/if_not_exists` on `remove_foreign_key/add_foreign_key`Rails 7 adds support for `if_exists/if_not_exists` on `remove_foreign_key/add_foreign_key` in migrations to silently ignore raised exceptions.
Rails 7 MySQL adapter improves the security of untyped bound valuesMySQL adapter in Rails 7 casts numbers and booleans to string to avoid security vulnerabilities.
Rails 7 adds previously_persisted? method to ActiveRecordRails 7 adds previously_persisted? method to check an object previously existed in the database and presently deleted.
Rails 7 adds AudioAnalyzer to ActiveStorageRails 7 adds AudioAnalyzer to ActiveStorage to extract audio duration and bit_rate.
Rails 7 generators will raise errors if an attribute type is invalidRails 7 generators will validate the type by checking if it is of a default migration type and will raise an error if it is invalid.
Rails 7 allows passing raw SQL as `on_duplicate` value to `#upsert_all`Rails 7 allow passing raw SQL statements to `on_duplicate` and `returning` option as value to ActiveRecord `#upsert_all` method.
Rails 7 provides context when logging unpermitted parametersRails 7 enables passing context to ActionController::Parameters providing more information to the developer.
Rails 7 adds encryption to ActiveRecordRails 7 supports application-level encryption. We can declare which attributes should be encrypted and, ActiveRecord will encrypt and decrypt when necessary.