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
22289	Field with Validator always considered changed in migrations	Daniel Hahler	nobody	"I am having the following model, and `schemamigration --auto` considers it to be changed always.

This appears to get triggered through the RegexValidator (commenting it, does not cause the model to be considered different every time).

{{{
from django.core.validators import RegexValidator
class Model(TimeStampedModel):
    foo_id = models.CharField(
        verbose_name='FOO ID',
        max_length=200,  # allow for URL in form, cleaned in clean_foo_id
        validators = [RegexValidator(r'(?i)^(?:(?:https?://)?www.foo.com/title/)?(tt\d+)(?:/.*)?$')],
        help_text=_('…'),
        blank=True,
        null=True,
        unique=True)
}}}

This _might_ be related to #22255, but probably only because it's about the same field.. ;)"	Bug	closed	Migrations	1.7-alpha-2	Normal	needsinfo			Unreviewed	0	0	0	0	0	0