| Safe Haskell | None |
|---|---|
| Language | Haskell2010 |
Database.Persist.Class.DeleteCascade
Description
Deprecated: The DeleteCascade module is deprecated. You can now set cascade behavior directly on entities in the quasiquoter.
Synopsis
-
class
(
PersistStoreWrite
backend,
PersistEntity
record,
BaseBackend
backend ~
PersistEntityBackend
record) =>
DeleteCascade
record backend
where
- deleteCascade :: MonadIO m => Key record -> ReaderT backend m ()
- deleteCascadeWhere :: forall record backend m. ( MonadIO m, DeleteCascade record backend, PersistQueryWrite backend) => [ Filter record] -> ReaderT backend m ()
Documentation
class ( PersistStoreWrite backend, PersistEntity record, BaseBackend backend ~ PersistEntityBackend record) => DeleteCascade record backend where Source #
For combinations of backends and entities that support cascade-deletion. “Cascade-deletion” means that entries that depend on other entries to be deleted will be deleted as well.
deleteCascadeWhere :: forall record backend m. ( MonadIO m, DeleteCascade record backend, PersistQueryWrite backend) => [ Filter record] -> ReaderT backend m () Source #
Cascade-deletion of entries satisfying given filters.