How to fix the login page in django?

Question

Django

Hello!
There is a login page:

<form class="form-signin" method="post">
  {% csrf_token %}
  <input type="hidden" name="next" value="{{ next }}">
  <img class="mb-4" src="{% static "logo.svg" %}" alt="" width="72" height="72">


  <h1 class="h3 mb-3 font-weight-normal">Вход</h1>
  <label for="inputEmail" class="sr-only">Email</label>
  <input type="email" id="inputEmail" class="form-control" placeholder="Email" name="username"
         value="" required="" autofocus="" data-cip-id="inputEmail">
  <label for="inputPassword" class="sr-only">Password</label>
  <input type="password" id="inputPassword" class="form-control" placeholder="Пароль"
         name="password" required="" data-cip-id="inputPassword">

  <button class="btn btn-lg btn-primary btn-block" type="submit">Войти</button>
  <p class="mt-5 mb-3 text-muted">© Просто магазин 2018</p>
</form>

this is how it is written in urls

path('login/', views.LoginView.as_view(), name='login')

the settings say LOGIN_REDIRECT_URL = '/' for redirecting to the main page
So here's the problem:
if you create a user and then try to log in, then when you press the button, the page simply refreshes, the login does not occur,
I guess the point is that I enter not a login, but an email, but how fix this? how to make that there was an input on soap and the password? (standard user)

Answer 1

Write an authentication backend :

class EmailAuthenticationBackend(ModelBackend):
    def authenticate(self, request, email=None, password=None):
        try:
            user = User.objects.get(email=email)
            if user.check_password(password):
                return user
        except User.DoesNotExist:
            return None

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

Answer 2

To use email instead of username
1. Define your user model with Example:USERNAME_FIELD = 'email'

class User(AbstractUser):
    """User model."""
    
    username = None  # Можете выпилить username если он вам не нужен
    email = models.EmailField(_('email address'), unique=True)

    USERNAME_FIELD = 'email'
    REQUIRED_FIELDS = []

2. In settings.py add Related Links: One TwoAUTH_USER_MODEL = 'YOUR_APP.User'