Extending User Model Django, IntegrityError -

i trying extend user model create profile model. following code displays form additional fields specified location , bio. when submit form original username, first_name, last_name, email, , password fields stored in database @ http://127.0.0.1:8000/admin, none of custom fields stored in profile section added admin . following error:

integrityerror @ /accounts/register/ not null constraint failed: accounts_profile.user_id request method: post request url:    http://127.0.0.1:8000/accounts/register/ django version: 1.11.2 exception type: integrityerror exception value:     not null constraint failed: accounts_profile.user_id exception location: /library/frameworks/python.framework/versions/3.6/lib/python3.6/site-packages/django/db/backends/sqlite3/base.py in execute, line 328 python executable:  /library/frameworks/python.framework/versions/3.6/bin/python3.6 

models.py:

from django.db import models django.contrib.auth.models import user django.db.models.signals import post_save django.dispatch import receiver  class profile(models.model):     user = models.onetoonefield(user, on_delete=models.cascade)     bio = models.textfield(max_length=500, blank=true)     location = models.charfield(max_length=30, blank=true)     birth_date = models.datefield(null=true, blank=true)  @receiver(post_save, sender=user) def create_user_profile(sender, instance, created, **kwargs):     if created:         profile.objects.create(user=instance)  @receiver(post_save, sender=user) def save_user_profile(sender, instance, **kwargs):     instance.profile.save() 

forms.py:

from django import forms django.contrib.auth.models import user django.contrib.auth.forms import usercreationform .models import profile  class registrationform(usercreationform):     email = forms.emailfield(required = true)      class meta:         model = user #model user comes username, email, first name, last name , pass1 , pass2 fields         fields = (             'username',             'email',             'first_name',             'last_name',             'password1',             'password2'         )      def save(self, commit = true):         user =  super(registrationform, self).save(commit = false)         user.first_name = self.cleaned_data['first_name']         user.last_name =  self.cleaned_data['last_name']         user.email =  self.cleaned_data['email']           if commit:             user.save()              return user  class profileform(forms.modelform):     class meta:         model = profile         fields = ('location','bio') 

views.py:

from django.shortcuts import render, redirect   .forms import registrationform,profileform    def register(request):     if request.method == 'post':         form = registrationform(request.post)         profile_form = profileform(request.post)         if form.is_valid() , profile_form.is_valid():             form.save()             profile_form.save()             return redirect('login')      else:         form = registrationform()         profile_form = profileform()       return render(request, 'accounts/register.html', {'form': form, 'profile_form': profile_form}) 

urls.py:

from django.conf.urls import url django.contrib.auth.views import login . import views   urlpatterns = [     # /accounts/     url(r'^$', views.index, name = 'accounts'),      # /accounts/register/     url(r'^register/$',  views.register, name='register'),      url(r'^login/$', login, {'template_name': 'accounts/login.html'}, name='login'), ] 

admin.py:

from django.contrib import admin .models import profile # register models here.  admin.site.register(profile) # register models here. 

any appreciated.

you have set relation manually view should this:

    if form.is_valid() , profile_form.is_valid():         user_object = form.save()         = profile_form.save(commit=false)         a.user = user_object         a.save()         return redirect('login')