id	summary	reporter	owner	description	type	status	component	version	severity	resolution	keywords	cc	stage	has_patch	needs_docs	needs_tests	needs_better_patch	easy	ui_ux
5524	Cleaned form data should not be deleted if other data is invalid.	Ben Slavin	Simon Charette	"Currently, when validating a newforms Form object (```.full_clean()```), the ```cleaned_data``` attribute is deleted if any of the fields on the form are invalid.

Data that has been cleaned should be retained, rather than deleted.

Some sample use cases are:
 1. Allowing partial previews (discussed in #5153)
 2. Maintain file-uploads across submits of a form
 3. Prevent having to perform expensive operations twice (hash the value and compare on resubmit)

Discussed here http://groups.google.com/group/django-developers/browse_thread/thread/a23807d32cc3042d/58a4ea6a2e3e8a77."	Bug	closed	Forms	dev	Normal	fixed		hv@… simon@… charette.s@…	Ready for checkin	1	0	0	0	0	0