def long_username(sender, *args, **kwargs):
"""Override the built in username field"""
if (sender.__name__ == "User" and
sender.__module__ == "django.contrib.auth.models"):
sender._meta.get_field("username").max_length = max_username_length()
sender._meta.get_field("username").help_text = _("Required, %s "
"characters or fewer. Only letters, numbers, and @, ., +, -, "
"or _ characters." % max_username_length())
def username_field():
"return username field"
return forms.RegexField(
label=_("Username"), max_length=max_username_length(),
regex=r'^[\w.@+-]+$',
help_text=username_help(),
error_messages={'invalid': _(
"This value may contain only letters, numbers"
" and @/./+/-/_ characters.")
})
def patch_username():
username = User._meta.get_field("username")
username.max_length = max_username_length()
for v in username.validators:
if isinstance(v, MaxLengthValidator):
v.limit_value = max_username_length()
def forwards(self, orm):
db.alter_column('auth_user', 'username', models.CharField(max_length=max_username_length()))
def username_help():
"username help text"
return _("Required, %(chars)s characters or fewer."
" Only letters, numbers, and characters "
"such as @.+_- are allowed." %
dict(chars=str(max_username_length())))