Currently, on successful POST, the form isn't propulated with the newer values.

forms.py

from django import forms
from django.core.exceptions import ValidationError

from apps.content.models import Profile
from apps.content.models import CustomUser

class UserForm(forms.ModelForm):

    class Meta:
        model = CustomUser
        fields = ['first_name',
                  'last_name',
                  'email']

models.py

from django.db import models
from django.contrib.auth.models import AbstractUser

class CustomUser(AbstractUser):
    company = models.CharField(max_length=30, blank=True, null=True)
    phone_number = models.CharField(max_length=15, blank=True, null=True)
    website = models.URLField(blank=True, null=True)

views.py

from forms import UserForm

from apps.content.models import CustomUser

class SettingsView(UpdateView):
    model = CustomUser
    form_class = UserForm
    template_name = 'account/settings.html'
    success_url = '/account/settings/'

    fields = ['first_name',
              'last_name',
              'email',
              'company']

    def get_initial(self):
        return model_to_dict(CustomUser.objects.get(id=self.request.user.id))


    def get_object(self):
        return CustomUser.objects.get(id=self.request.user.id)