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
33283	Support for map function on ModelAdmin.prepopulated_fields.	Richard Connon	nobody	"When using `ModelAdmin.prepopulated_fields` to populate a field based on entry into another field it would be very useful to be able to supply a map function which modifies the value before pre-population.

My particular use-case, is to pre-populate a field using the filename of the file being uploaded to a `FileField`, which using the current option ends up including something like ""cfakepath"" as a prefix."	New feature	closed	contrib.admin	4.0	Normal	wontfix			Unreviewed	0	0	0	0	0	0