1 files changed, 8 insertions, 1 deletions
diff --git a/src/server/Model/Frequency.hs b/src/server/Model/Frequency.hs
index 2b747b7..a6ba55c 100644
--- a/src/server/Model/Frequency.hs
+++ b/src/server/Model/Frequency.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE DeriveGeneric #-}
 {-# LANGUAGE OverloadedStrings #-}
 {-# LANGUAGE TemplateHaskell #-}
 
@@ -5,15 +6,21 @@ module Model.Frequency
   ( Frequency(..)
   ) where
 
+import GHC.Generics
+
 import Web.Scotty
 
 import Database.Persist.TH
 
+import Data.Aeson
+
 data Frequency =
   Punctual
   | Monthly
-  deriving (Eq, Show, Read)
+  deriving (Eq, Show, Read, Generic)
 
 derivePersistField "Frequency"
 
 instance Parsable Frequency where parseParam = readEither
+instance FromJSON Frequency
+instance ToJSON Frequency