DisplayAble vs Show for Theme completed.

src/Handler/Profile.hs

@@ -65,10 +65,10 @@ getProfileR = do
           [ (MsgName        ,  userDisplayName   )
           , (MsgIdent       ,  userIdent )
           , (MsgPlugin      ,  userPlugin        )
-          , (MsgMatrikelNr  ,  fromMaybe "" userMatrikelnummer)
+          , (MsgMatrikelNr  ,  display userMatrikelnummer)
           , (MsgEMail       ,  userEmail         )
-          , (MsgFavoriten   ,  pack $ show userMaxFavourites)
-          , (MsgTheme       ,  pack $ show userTheme )
+          , (MsgFavoriten   ,  display userMaxFavourites)
+          , (MsgTheme       ,  display userTheme )
           ]
         userDisplay = mconcat
           [ headless $ toWgt . mr . fst

src/Model/Types.hs

@@ -197,7 +197,8 @@ data Theme       --Simply add Themes to this type only. CamelCase will be conver
   | SkyLove
   deriving (Eq,Ord,Bounded,Enum)
 
-$(deriveShowWith uncamel ''Theme)
+$(deriveShowWith uncamel ''Theme)                             -- show    for internal use in css/js
+$(deriveSimpleWith ''DisplayAble 'display camelSpace ''Theme) -- display to display at user
 
 allThemes :: [Theme]
 allThemes = [minBound..maxBound]

src/Utils.hs

@@ -71,15 +71,23 @@ withFragment :: ( Monad m
 withFragment form html = (flip fmap) form $ \(x, widget) -> (x, toWidget html >> widget)
 
 
-uncamel :: String -> String -- "Model.Theme.CamelCaseThing" -> "cmael-case-thing"
+uncamel :: String -> String -- "Model.Theme.CamelCaseThing" -> "camel-case-thing"
 uncamel = ("theme-" ++) . reverse . foldl helper []
   where
     helper _   '.' = []
     helper acc  c
       | Char.isSpace c = acc
       | Char.isUpper c = Char.toLower c : '-' : acc
-      | otherwise = c : acc
+      | otherwise      = c : acc
 
+camelSpace :: String -> String -- "Model.Theme.CamelCaseThing" -> "Camel Case Thing"
+camelSpace = reverse . foldl helper []
+  where
+    helper _   '.' = []
+    helper acc  c
+      | Char.isSpace c = acc
+      | Char.isUpper c = c : ' ' : acc
+      | otherwise      = c : acc
 
 -- Convert anything to Text, and I don't care how
 class DisplayAble a where

src/Utils/Common.hs

@@ -53,16 +53,19 @@ altFun perm = lamE pat rhs
 
 -- Special Show-Instances for Themes
 deriveShowWith :: (String -> String) -> Name -> Q [Dec]
-deriveShowWith strOp ty = do
+deriveShowWith = deriveSimpleWith ''Show 'show
+
+deriveSimpleWith ::  Name -> Name -> (String -> String) -> Name -> Q [Dec]
+deriveSimpleWith cls fun strOp ty = do
     (TyConI tyCon)  <- reify ty
     (tyConName, cs) <- case tyCon of
         DataD [] nm [] _ cs _ -> return (nm, cs)
         _ -> fail "deriveShowTheme: tyCon must be a plain datatype enumeration"
-    let instanceT = conT ''Show `appT` conT tyConName
+    let instanceT = conT cls `appT` conT tyConName
     return <$> instanceD (return []) instanceT [genDecs cs]
   where
     genDecs :: [Con] -> Q Dec
-    genDecs cs = funD 'show (map genClause cs)
+    genDecs cs = funD fun (map genClause cs)
 
     genClause :: Con -> Q Clause
     genClause (NormalC name []) =