from django.contrib.auth.forms import AuthenticationForm, PasswordChangeForm from django.core.exceptions import ValidationError from django.utils.translation import gettext_lazy as _ class AdminAuthenticationForm(AuthenticationForm): """ A custom authentication form used in the admin app. """ error_messages = { **AuthenticationForm.error_messages, "invalid_login": _( "Please enter the correct %(username)s and password for a staff " "account. Note that both fields may be case-sensitive." ), } required_css_class = "required" def confirm_login_allowed(self, user): super().confirm_login_allowed(user) if not user.is_staff: raise ValidationError( self.error_messages["invalid_login"], code="invalid_login", params={"username": self.username_field.verbose_name}, ) class AdminPasswordChangeForm(PasswordChangeForm): required_css_class = "required"