| 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.
Methods
deleteCascade :: MonadIO m => Key record -> ReaderT backend m () Source #
Perform cascade-deletion of single database entry.
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.