I have a FormFunction
that should work only with CSV files, something like:
CloudDeploy[FormFunction[{"file" -> "CSV"}, Dimensions[#file] & ],
Permissions -> "Public"]
How can I create a restriction so only CSV files can be submitted?
I want to show a message saying "only CSV files can be uploaded" when someone tries to load an image, and prevent the submit.
I tried this, didn't work:
CloudDeploy[
FormFunction[{"file" -> <|"Interpreter" -> Restricted["CSV"]|>},
Dimensions[#file] & ], Permissions -> "Public"]