While calling 'Document Upload WEB API' need to restrict specific file extension.

Question

Problem statement: I have a requirement wherein we receive file in Appian from a third party system. For security reasons we want to restrict only few file extension.

I have created a WEB API using a ' Document Upload' Template , so that external systems can push documents to Appian. 
I want to return error code in response when some hits this WEB API and upload files with extension other than .xlsx. 
I have used  document(http!request.body, "extension"), however this does not restrict document to be added to target folder. 
Is it possible that , WEB API returning error code and  not even allowing files with specific extension to be added to target folder.

stefanhelzle0001 · Answer

The file itself is uploaded and stored in the target folder before the API code is executed. I think this is what you are seeing.

Why not just start a process which checks the extension and deletes the file if it is the wrong one. If you enable some chaining, you can return values from the process to the API and return appropriate messages.

Sign up

Login with SSO

Login to the community

Login with SSO