django-rest-auth custom registration failed to save extra fields even after changing save() method -

i trying integrate user registration , login custom fields. using django-rest-auth. have added fields model , in modelserializer have inherited rest_auth.registration.serializers.registerserializer although registration process successful,but custom fields not getting saved.

models.py

from django.db import models phonenumber_field.modelfields import phonenumberfield  class vendor(models.model):      login_type = (         ('1', 'my_form'),         ('2', 'facebook'),         ('3', 'google'),)     status = (         ('0', 'signed_up'),         ('1', 'otp_verified'),         ('2', 'activated'),)      device_type_choices = (         ('1', 'android'),         ('2', 'ios'),)      phone = phonenumberfield(unique=true)      device_token = models.charfield(max_length=250)     device_type = models.charfield(max_length=1, choices=device_type_choices)     login_type = models.charfield(max_length=1, choices=login_type)     status = models.charfield(max_length=1, choices=status)     created_on = models.datetimefield(auto_now_add=true) 

serializers.py

from rest_auth.registration.serializers import registerserializer  rest_framework import serializers allauth.account.adapter import get_adapter allauth.account.utils import setup_user_email .models import vendor    class vendorregisterserializer(serializers.modelserializer, registerserializer):      class meta:         model = vendor         exclude = ('username',)      def get_cleaned_data(self):         return {              'password1': self.validated_data.get('password1', ''),             'email': self.validated_data.get('email', ''),             'phone': self.validated_data.get('phone', ''),             'device_token': self.validated_data.get('device_token', ''),             'login_type': self.validated_data.get('login_type', ''),             'device_type': self.validated_data.get('device_type', ''),             'status': self.validated_data.get('status', '')         }      def save(self, request):         adapter = get_adapter()         user = adapter.new_user(request)         self.cleaned_data = self.get_cleaned_data()         adapter.save_user(request, user, self)         setup_user_email(request, user, [])          user.phone = self.cleaned_data.get('phone')         user.device_token = self.cleaned_data.get('device_token')         user.login_type = self.cleaned_data.get('login_type')         user.device_token = self.cleaned_data.get('device_token')         user.device_type = self.cleaned_data.get('device_type')         user.status = self.cleaned_data.get('status')           user.save()         print(user.phone)         return user