blob: 4f7b83dab7eb4d5c261bf2bee6a1d58062934ac9 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
|
{-# LANGUAGE DeriveGeneric #-}
{-# LANGUAGE OverloadedStrings #-}
{-# LANGUAGE TemplateHaskell #-}
{-# OPTIONS_GHC -fno-warn-orphans #-}
module Model.Frequency () where
import Database.SQLite.Simple (SQLData(SQLText))
import Database.SQLite.Simple.FromField (fieldData, FromField(fromField))
import Database.SQLite.Simple.Ok (Ok(Ok, Errors))
import Database.SQLite.Simple.ToField (ToField(toField))
import qualified Data.Text as T
import Common.Model.Frequency (Frequency)
instance FromField Frequency where
fromField field = case fieldData field of
SQLText text -> Ok (read (T.unpack text) :: Frequency)
_ -> Errors [error "SQLText field required for frequency"]
instance ToField Frequency where
toField frequency = SQLText . T.pack . show $ frequency
|
