Type-safe, data serialization. You must use a specific backend in order to make
this useful. For more information, see the chapter in the Yesod
book.
Changes
2.7.3.1
Improve error messages when failing to parse database results into Persistent records. #741
A handful of fromPersistField implementations called error instead of returning a Left Text. All of the implementations were changed to return Left. #741
Improve error message when a SQL insert fails with a custom primary key #757
2.7.3
Reverts #723, which generalized functions using the BackendCompatible class. These changes were an accidental breaking change.
Recommend the PersistDbSpecific docs if someone gets an error about converting from PersistDbSpecific
2.7.2 [DEPRECATED ON HACKAGE]
Many of the functions have been generalized using the BackendCompatible class. #723
This change was an accidental breaking change and was reverted in 2.7.3.
These change will be released in a future version of Persistent with a major version bump.