Blobstore doesn't return the GET parameters after processing the file, so use a POST parameter that is assured to be present during file upload.
Blobstore doesn't return the GET parameters after processing the file, so use a POST parameter that is assured to be present during file upload.

Also I think it is a bad idea to use GET parameters along with the post
request. This part needs to be rewritten to check for the corresponding
POST parameters of the buttons and then call the appropriate post processing
method than using GET parameters.

rhyolight/nupic.son,rhyolight/nupic.son,rhyolight/nupic.son