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
2976	[patch] repr(uploadfile) should not contain the file content	Jeong-Min Lee <falsetru@…>	nobody	"If uploadfile['content'] is very long, repr(uploadfile) produce non-readable stuff.
It sometimes make a browser hang.

A significant performance problem occur on following scenario.
  1. You have a model that has many nullable/blankable fields with a FileField.
  1. You upload big file, without filling nullable fields.
  1. In view, manipulator.save is called.
  1. for each field, validation is called.
  1. for nullable field, while getting field from new_data, repr(new_data) is called, which trigger repr(upload_file)
  1. repr(upload_file) is very long. It is called for each nullable field. this take long time. (taked 4s~12s for my app)


Sorry for my poor explanation."	defect	closed	Core (Other)	dev	major	fixed			Design decision needed	1	0	0	0	0	0