persistBackend

persistBackend :: HasPersistBackend backend => backend -> BaseBackend backend
persistent Database.Persist.Class Database.Persist.Class.PersistStore Database.Persist.Sql.Types.Internal, esqueleto Database.Esqueleto Database.Esqueleto.Experimental Database.Esqueleto.Legacy, persistent-mtl Database.Persist.Sql.Shim, hledger-web Hledger.Web.Import
class HasPersistBackend backend
persistent Database.Persist.Class Database.Persist.Class.PersistStore Database.Persist.Sql.Types.Internal
Class which allows the plucking of a BaseBackend backend from some larger type. For example, instance HasPersistBackend (SqlReadBackend, Int) where type BaseBackend (SqlReadBackend, Int) = SqlBackend persistBackend = unSqlReadBackend . fst
class (HasPersistBackend backend) => IsPersistBackend backend
persistent Database.Persist.Class Database.Persist.Class.PersistStore Database.Persist.Sql.Types.Internal
Class which witnesses that backend is essentially the same as BaseBackend backend. That is, they're isomorphic and backend is just some wrapper over BaseBackend backend.
mkPersistBackend :: IsPersistBackend backend => BaseBackend backend -> backend
persistent Database.Persist.Class.PersistStore Database.Persist.Sql.Types.Internal
This function is how we actually construct and tag a backend as having read or write capabilities. It should be used carefully and only when actually constructing a backend. Careless use allows us to accidentally run a write query against a read-only database.
class () => HasPersistBackend backend
esqueleto Database.Esqueleto Database.Esqueleto.Experimental Database.Esqueleto.Legacy, persistent-mtl Database.Persist.Sql.Shim, hledger-web Hledger.Web.Import
Class which allows the plucking of a BaseBackend backend from some larger type. For example, instance HasPersistBackend (SqlReadBackend, Int) where type BaseBackend (SqlReadBackend, Int) = SqlBackend persistBackend = unSqlReadBackend . fst
class HasPersistBackend backend => IsPersistBackend backend
esqueleto Database.Esqueleto Database.Esqueleto.Experimental Database.Esqueleto.Legacy, persistent-mtl Database.Persist.Sql.Shim, hledger-web Hledger.Web.Import
Class which witnesses that backend is essentially the same as BaseBackend backend. That is, they're isomorphic and backend is just some wrapper over BaseBackend backend.
type family YesodPersistBackend site
yesod-persistent Yesod.Persist.Core, hledger-web Hledger.Web.Import Hledger.Web.Import
stPersistBackends :: PersistentTCState -> [Backend_boot TCM]
Agda Agda.Compiler.Backend Agda.TypeChecking.Monad.Base
Current backends with their options