(YesodAuth master, PersistMonadBackend (b (HandlerT master IO)) ~ PersistEntityBackend val, b ~ YesodPersistBackend master, Key val ~ AuthId master, PersistStore (b (HandlerT master IO)), PersistEntity val, YesodPersist master, Typeable val) => HandlerT master IO (Maybe (AuthId master))
(
YesodAuth master,
PersistMonadBackend (
b (
HandlerT master IO
)
) ~ PersistEntityBackend val,
b ~ YesodPersistBackend master,
Key val ~ AuthId master,
PersistStore (
b (
HandlerT master IO
)
),
PersistEntity val,
YesodPersist master,
Typeable val
) =>
HandlerT master IO (
Maybe (
AuthId master
)
)