-- Hoogle documentation, generated by Haddock
-- See Hoogle, http://www.haskell.org/hoogle/


-- | Some helpers for using Persistent from Yesod.
--   
--   Some helpers for using Persistent from Yesod.
@package yesod-persistent
@version 0.2.2

module Yesod.Persist
class YesodPersist master where { type family YesodPersistBackend master :: (* -> *) -> * -> *; }
runDB :: (YesodPersist master, MonadIO monad) => YesodDB sub master a -> GGHandler sub master monad a
type YesodDB sub master = YesodPersistBackend master (GGHandler sub master IO)

-- | Get the given entity by ID, or return a 404 not found if it doesn't
--   exist.
get404 :: (PersistBackend t m, PersistEntity val, Monad (t m), Failure ErrorResponse m, MonadTrans t) => Key t val -> t m val

-- | Get the given entity by unique key, or return a 404 not found if it
--   doesn't exist.
getBy404 :: (PersistBackend t m, PersistEntity val, Monad (t m), Failure ErrorResponse m, MonadTrans t) => Unique val t -> t m (Key t val, val)