I used this when I was dealing with fileuploads: http://formencode.org/modules/validators.html#formencode.validators.FieldStorageUploadConverter
It says it detects the absence of a file upload. HTH. Brian On Sat, Nov 7, 2009 at 9:44 PM, Nick Retallack <[email protected]>wrote: > > There are plenty of examples of how to upload files in Pylons, but > none of them check if the user actually put a file in the form or > not. If they don't, the application breaks. Wonderful. > > So, how do you check? Well, I'd expect this to work: > > if not request.params['file']: > return "No file was uploaded" > > Unfortunately, even if the file is there it evaluates to falsy. > > print "True" if request.params['file'] else "False" # always False > > I did find a reliable way to test it though: > > if request.params['file'] == u'': > return "No file was uploaded" > > Yeah, it comes out as an empty string if there's no file. Weird. Is > this a good enough check? Will it still act this way when proxied to > by different servers? > > I'm really surprised I couldn't find this information elsewhere. > Should we add this to the tutorials? > http://wiki.pylonshq.com/display/pylonsdocs/Form+Handling > > > > -- Brian O'Connor --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "pylons-discuss" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/pylons-discuss?hl=en -~----------~----~----~----~------~----~------~--~---
