from django.db import models class Signup(models.Model): email = models.EmailField() created_at = models.DateTimeField(auto_now_add = True) anonymized_ip = models.GenericIPAddressField() user_agent = models.CharField(max_length = 255) class Meta: constraints = [ models.UniqueConstraint(name = "unique_email", fields = ["email"]), ] def __str__(self): return self.email