Delete from wwv_flow_files after auto submit

Question

Hi,
I have a situation in a file upload page (based on the How TO Doc), where auto submitting is done when an item (select list with submit) is used. We stored the uploaded file in a custom file and normally it works. But when the select list item is used before the submit button is pressed, then the file is automatically upload. (see posted topic Re: File Upload Submit Woes
In this previously posted topic, Scott Spadafore described a workaround using a computation where to delete files from wwv_flow_files. I implemented it and it works fine, when auto submit is done. But when doing this, my doSubmit Process is not executed properly, this means storing the uploading files in a custom table fails.
I think computation (after Submit) is done before validation and processing (after submit).
Anyone any idea how to solve the problem (to delete file from wwv_flow_files after auto submit is done and to insert uploaded file in in a custom file when submit button pressed)?
Conditional computation does not have "When no button pressed" condition or something like this.
I'm searching for a solution to implement a computation (with deleting auto-submitted files from wwv_flow_files), but only when no submit button was used.
Thomas

Answer 1

Thomas,
When a button is used, or a doSubmit submits the page, the "request" value is set and is available for inspection by computations, processes, etc. In your case, you cannot use the declarative "when button pressed" controls, but you can use built-in condition types that evaluate the request or you can code pl/sql expression conditions like :REQUEST = 'button name'.
Scott