Database.Persist.Relational

This module works as a bridge between Haskell Relational Record and Persistent. It uses the persistent entities definition instead of obtaining schema from DB at compilation time.

See: https://github.com/himura/persistent-relational-record#readme

Documentation

runQuery

Arguments

:: (MonadResource m, MonadReader env m, HasPersistBackend env, BaseBackend env ~ SqlBackend, FromSql PersistValue a, ToSql PersistValue p)

=> Query p a

Query to get record type a requires parameter p

-> p

Parameter type

-> ConduitT () a m ()

Execute a HRR Query and return the stream of its results.

rawQuery :: (MonadResource m, MonadReader env m, HasPersistBackend env, BaseBackend env ~ SqlBackend, ToSql PersistValue p) => Query p a -> p -> ConduitT () [PersistValue] m ()

mkHrr :: [EntityDef] -> Q [Dec]

mkHrrWithConfig :: NameConfig -> [EntityDef] -> Q [Dec]

deriveGenericForEntityId :: [EntityDef] -> Q [Dec]

standalone deriving Generic instance for entity IDs.

Persistent does not derive Generic instances for `Key a`. see https://github.com/yesodweb/persistent/pull/734#issuecomment-346696921 https://github.com/yesodweb/persistent/issues/578

defineFromToSqlPersistValue :: TypeQ -> Q [Dec]

Generate FromSql PersistValue and ToSql PersistValue instances for PersistField types.

module Database.Persist.Relational.Config