Release dm 0.2.1 · cynkra/dm

Breaking changes

dm_get_all_fks() returns a data frame with a parent_key_cols instead of a parent_pk_cols column (introduced in dm 0.2.0), to reflect the fact that a foreign key no longer necessarily points to a primary key (#562).
*_pk() and *_fk() functions now verify that the dots are actually empty (#536).
dm_get_pk() is deprecated in favor of dm_get_all_pks() (#561).
dm_has_fk() and dm_get_fk() are deprecated in favor of dm_get_all_fks() (#561).

dm_add_fk() gains ref_columns argument that supports creating foreign keys to non-primary keys (#402).
dm_get_all_pks() gains table argument for filtering the returned primary keys (#560).
dm_get_all_fks() gains parent_table argument for filtering the returned foreign keys (#560).
dm_rm_fk() gains an optional ref_columns argument. This function now supports removal of multiple foreign keys filtered by parent or child table or columns, with a message (#559).
dm_rm_pk() gains columns argument and allows filtering by columns and by tables or removing all primary keys. The rm_referencing_fks argument has been deprecated in favor of the new fail_fk argument (#558).
dm_get_all_fks() has been optimized for speed and no longer sorts the keys (#560).
dm operations are now slightly faster overall.

The internal data structure for a dm object has changed to accommodate foreign keys to other columns than the primary key. An upgrade message is shown when working with a dm object from an earlier version, e.g. if it was loaded from a cache or an .rds file (#402).
Drop "dm_v1" class from dm objects again, this would have made every S3 dispatch more costly. Relying on an internal "version" attribute instead (#547).