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- from django.contrib.auth import get_user_model
- from django.contrib.auth.backends import ModelBackend
- # проверка username без учета регистра, т.е. john и John учитываются как одно и то же имя пользователя
- class CaseInsensitiveModelBackend(ModelBackend):
- def authenticate(self, request, username=None, password=None, **kwargs):
- UserModel = get_user_model()
- if username is None:
- username = kwargs.get(UserModel.USERNAME_FIELD)
- try:
- case_insensitive_username_field = '{}__iexact'.format(UserModel.USERNAME_FIELD)
- user = UserModel._default_manager.get(**{case_insensitive_username_field: username})
- except UserModel.DoesNotExist:
- # Run the default password hasher once to reduce the timing
- # difference between an existing and a non-existing user (#20760).
- UserModel().set_password(password)
- else:
- if user.check_password(password) and self.user_can_authenticate(user):
- return user
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