class User(AbstractUser):
    phone_number = models.CharField(max_length=10, unique=True)


    def __unicode__(self):
        return self.username

class SignupForm(forms.Form):
    phone_number = forms.CharField(max_length=10,label='phone_number')

    def signup(self, request, user):
        user.phone_number = self.cleaned_data['phone_number']
        user.save()