How to Authenticate Django Users via Email Addresses?

Django Authentication with Email

In Django, authentication is typically performed using usernames. However, sometimes it's desirable to authenticate users via their email addresses instead. This raises a challenge, as Django uses usernames in its URL structure.

Custom Authentication Backend

To overcome this limitation, you can write a custom authentication backend. This backend allows you to specify your own authentication logic:

<code class="python">from django.contrib.auth import get_user_model
from django.contrib.auth.backends import ModelBackend

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
        else:
            if user.check_password(password):
                return user
        return None</code>

This backend authenticates users based on their email addresses and passwords.

Configuring Authentication Backend

Once you have your custom backend, set it as your authentication backend in your Django settings:

<code class="python">AUTHENTICATION_BACKENDS = ['path.to.auth.module.EmailBackend']</code>

Logging In with Email

With the custom backend in place, you can authenticate users using their email addresses:

<code class="python">email = request.POST['email']
password = request.POST['password']
user = authenticate(request, username=email, password=password)</code>

The above is the detailed content of How to Authenticate Django Users via Email Addresses?. For more information, please follow other related articles on the PHP Chinese website!