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