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from django.contrib.auth.models import AbstractUser
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from django.core import validators
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from django.db import models
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from django.utils.deconstruct import deconstructible
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from django.utils.translation import gettext_lazy as _
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@deconstructible
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class UnicodeUsernameValidator(validators.RegexValidator):
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regex = r'^[\w.+-]+\Z'
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message = _(
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'Enter a valid username. This value may contain only letters, '
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'numbers, and ./+/-/_ characters.'
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)
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flags = 0
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class User(AbstractUser):
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username_validator = UnicodeUsernameValidator()
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username = models.CharField(
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_('username'),
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max_length=150,
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unique=True,
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help_text=_('Required. 150 characters or fewer. Letters, digits and ./+/-/_ only.'),
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validators=[username_validator],
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error_messages={
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'unique': _("A user with that username already exists."),
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},
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)
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