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
1070	Need to improve date validation	leopold@…	Adrian Holovaty	"when I input a invalid date, for example 0256-02-02, this date unexpectedly pass the validation of date field.
because the ''_datere = r'\d{4}-((?:0?[1-9])|(?:1[0-2]))-((?:0?[1-9])|(?:[12][0-9])|(?:3[0-1]))' "" in validators.py don't forbid the invalid year number. this will lead to error message ""year=256 is before 1900; the datetime strftime() methods require year >= 1900"" . since django don't support small-number year, date validation should answer for this . I think
_datere = r'()((?:19[0-9]{2}|[2-9][0-9]{3}))-((?:0?[1-9])|(?:1[0-2]))-((?:0?[1-9])|(?:[12][0-9])|(?:3[0-1]))' to forbid invalid input or just change 'isValidaANSIDate' to replay the small-number year of error message.
At last, I wish django can replace hardcode of date and time format with variable in setting file, that will be more convient for changing output format of date field, thanks."	defect	closed	contrib.admin		normal	fixed			Unreviewed	0	0	0	0	0	0