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Given this little project I'm using to learn Haskell, I would like to move my request handler's code generation to a Hamlet template, but am unsure how to pass things around.
My current code generates the following error when lines are uncommented, which is the first blocker:
Couldn't match expected type
String -> String' with actual type
String' In the return type of a call ofrenderHtml' Probable cause:
renderHtml' is applied to too many arguments In the expression: renderHtml ($ (shamletFile "fileList.hamlet")) In an equation for `myTemplate': myTemplate = renderHtml ($ (shamletFile "fileList.hamlet"))
Code:
site :: Snap ()
site =
ifTop (writeBS "hello world") <|>
route [ ("foo", writeBS "ba"),
("view_root_json_files", listRootFilesHandler)
] <|>
dir "static" (serveDirectory ".")
--myTemplate :: String -> String
--myTemplate = renderHtml ( $(shamletFile "fileList.hamlet") )
toText :: [FilePath] -> Text
toText = foldMap (flip snoc '\n' . pack)
listRootFilesHandler :: Snap ()
listRootFilesHandler = do
filenames <- liftIO $ getDirectoryContents "data"
let filtered_filenames = filter (not . isPrefixOf ".") filenames
writeText $ toText filtered_filenames
asked 46 secs ago
Snap render list in Hamlet
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