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42 lines
1.3 KiB
Haskell
42 lines
1.3 KiB
Haskell
module Model where
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import ClassyPrelude.Yesod
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import Database.Persist.Quasi
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import Data.Aeson
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import Data.Hashable (hashUsing)
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import Data.Slug (Slug, SnapSlug)
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import qualified Data.Text as Text
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import Types
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-- You can define all of your database entities in the entities file.
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-- You can find more information on persistent and how to declare entities
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-- at:
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-- http://www.yesodweb.com/book/persistent/
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share [mkPersist sqlSettings, mkMigrate "migrateAll"]
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$(persistFileWith lowerCaseSettings "config/models")
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ghcMajorVersionToText :: GhcMajorVersion -> Text
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ghcMajorVersionToText (GhcMajorVersion major minor)
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= pack (show major) <> "." <> pack (show minor)
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ghcMajorVersionFromText :: Text -> Maybe GhcMajorVersion
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ghcMajorVersionFromText t = case Text.splitOn "." t of
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[readMay -> Just major, readMay -> Just minor] ->
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Just $ GhcMajorVersion major minor
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_ -> Nothing
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instance Hashable GhcMajorVersion where
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hashWithSalt = hashUsing ghcMajorVersionToText
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instance Eq GhcMajorVersion where
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(GhcMajorVersion a b) == (GhcMajorVersion a' b') =
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a == a' && b == b'
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instance FromJSON GhcMajorVersion where
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parseJSON = withText "GhcMajorVersion" $
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maybe mzero return . ghcMajorVersionFromText
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instance ToJSON GhcMajorVersion where
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toJSON = toJSON . ghcMajorVersionToText
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