40 lines
797 B
Haskell
40 lines
797 B
Haskell
{-# OPTIONS_GHC -fno-warn-orphans #-}
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module Data.Time.Clock.Instances
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(
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) where
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import ClassyPrelude
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import Database.Persist.Sql
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import Data.Proxy
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import Data.Binary (Binary)
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import qualified Data.Binary as Binary
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import Data.Time.Clock
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import Data.Time.Calendar.Instances ()
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instance Hashable DiffTime where
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hashWithSalt s = hashWithSalt s . toRational
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instance PersistField NominalDiffTime where
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toPersistValue = toPersistValue . toRational
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fromPersistValue = fmap fromRational . fromPersistValue
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instance PersistFieldSql NominalDiffTime where
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sqlType _ = sqlType (Proxy @Rational)
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deriving instance Generic UTCTime
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instance Hashable UTCTime
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instance Binary DiffTime where
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get = fromRational <$> Binary.get
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put = Binary.put . toRational
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instance Binary UTCTime
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