使用email作为用户名的Django自定义身份验证

from django.contrib.auth.models import AbstractUser
from django.db import models

class CustomUser(AbstractUser):
    email = models.EmailField(unique=True)

    USERNAME_FIELD = 'email'
    REQUIRED_FIELDS = ['username']

    def __str__(self):
        return self.email

from django.contrib.auth.backends import ModelBackend
from django.contrib.auth import get_user_model

class EmailBackend(ModelBackend):
    def authenticate(self, request, username=None, password=None, **kwargs):
        UserModel = get_user_model()
        try:
            user = UserModel.objects.get(email=username)
        except UserModel.DoesNotExist:
            return None

        if user.check_password(password):
            return user

    def get_user(self, user_id):
        UserModel = get_user_model()
        try:
            return UserModel.objects.get(pk=user_id)
        except UserModel.DoesNotExist:
            return None

AUTH_USER_MODEL = 'yourapp.CustomUser'
AUTHENTICATION_BACKENDS = ['yourapp.auth.EmailBackend']

from django.contrib.auth.decorators import login_required
from django.utils.decorators import method_decorator
from django.views.generic import TemplateView

@method_decorator(login_required, name='dispatch')
class MyView(TemplateView):
    template_name = 'myview.html'