Make first name field unique for User in django-CodePudding

I am making a web app with django and I need to make the Users first name unique. I have searched around and it doesnt seem like there is a simple way to do this. The reason i need the first name to be unique is because i am using the first name field as a spotify username field because it makes it convenient because i can use the user creation form.

CodePudding user response：

you can use this

in models.py:

from django.contrib.auth.models import AbstractUser

class User(AbstractUser):
    first_name = models.CharField(max_length=255, null=False, unique=True)

in settings.py:

AUTH_USER_MODEL = 'app_name.User'