4.4.0
Enabling the deletion of files means your users can delete files after they have been uploaded. You can only delete files that have been uploaded during the current session or which have been passed in by using the initial file list feature. If you upload a file, leave the page, and come back then you cannot delete that file though Fine Uploader.
A file is eligible for deletion only after it has been successfully uploaded.
Fine Uploader appends a _method
parameter to the request object with a value of DELETE when the HTTP method is
POST instead of DELETE. This makes it easier to determine the intended semantics of the request server-side.