Active Record

TrueClass

:maintain_test_schema
:belongs_to_required_by_default

其它：

config.active_record.logger

config.active_record.primary_key_prefix_type

config.active_record.table_name_prefix
config.active_record.table_name_suffix

config.active_record.schema_migrations_table_name

config.active_record.pluralize_table_names

config.active_record.default_timezone

config.active_record.schema_format

config.active_record.timestamped_migrations

config.active_record.lock_optimistically

config.active_record.cache_timestamp_format

config.active_record.record_timestamps

config.active_record.partial_writes

config.active_record.dump_schema_after_migration