persistent-1.3.0.3: Type-safe, multi-backend data serialization.

Safe HaskellNone

Database.Persist

Contents

Synopsis

Documentation

module Database.Persist.Class

module Database.Persist.Types

query combinators

(=.) :: forall v typ. PersistField typ => EntityField v typ -> typ -> Update vSource

assign a field a value

(+=.) :: forall v typ. PersistField typ => EntityField v typ -> typ -> Update vSource

assign a field by addition (+=)

(-=.) :: forall v typ. PersistField typ => EntityField v typ -> typ -> Update vSource

assign a field by subtraction (-=)

(*=.) :: forall v typ. PersistField typ => EntityField v typ -> typ -> Update vSource

assign a field by multiplication (*=)

(/=.) :: forall v typ. PersistField typ => EntityField v typ -> typ -> Update vSource

assign a field by division (/=)

(==.) :: forall v typ. PersistField typ => EntityField v typ -> typ -> Filter vSource

(!=.) :: forall v typ. PersistField typ => EntityField v typ -> typ -> Filter vSource

(<.) :: forall v typ. PersistField typ => EntityField v typ -> typ -> Filter vSource

(>.) :: forall v typ. PersistField typ => EntityField v typ -> typ -> Filter vSource

(<=.) :: forall v typ. PersistField typ => EntityField v typ -> typ -> Filter vSource

(>=.) :: forall v typ. PersistField typ => EntityField v typ -> typ -> Filter vSource

(<-.) :: forall v typ. PersistField typ => EntityField v typ -> [typ] -> Filter vSource

In

(/<-.) :: forall v typ. PersistField typ => EntityField v typ -> [typ] -> Filter vSource

NotIn

(||.) :: forall v. [Filter v] -> [Filter v] -> [Filter v]Source

the OR of two lists of filters

JSON Utilities

listToJSON :: [PersistValue] -> TextSource

mapToJSON :: [(Text, PersistValue)] -> TextSource

getPersistMap :: PersistValue -> Either Text [(Text, PersistValue)]Source

Other utililities

limitOffsetOrder :: PersistEntity val => [SelectOpt val] -> (Int, Int, [SelectOpt val])Source