Django OnetoOneField of default User model - django

Question

I am trying to add extra field in User model for that i used OnetoOneField.
I want to make student profile but it is giving error.My setting.py is
"""
Django settings for smvdu_portal project.
For more information on this file, see
https://docs.djangoproject.com/en/1.6/topics/settings/
For the full list of settings and their values, see
https://docs.djangoproject.com/en/1.6/ref/settings/
"""
# Build paths inside the project like this: os.path.join(BASE_DIR, ...)
import os
BASE_DIR = os.path.dirname(os.path.dirname(__file__))
# Quick-start development settings - unsuitable for production
# See https://docs.djangoproject.com/en/1.6/howto/deployment/checklist/
# SECURITY WARNING: keep the secret key used in production secret!
SECRET_KEY = '$9b^ttpvr66hxr0w6d*nep&=f5(hzdpmob)ng(a)yp*&sj1nsw'
# SECURITY WARNING: don't run with debug turned on in production!
DEBUG = True
TEMPLATE_DEBUG = True
ALLOWED_HOSTS = []
# Application definition
INSTALLED_APPS = (
'django.contrib.admin',
'django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.messages',
'django.contrib.staticfiles',
'django_extensions',
'quiz',
'student',
'django_extensions'
)
MIDDLEWARE_CLASSES = (
'django.contrib.sessions.middleware.SessionMiddleware',
'django.middleware.common.CommonMiddleware',
'django.middleware.csrf.CsrfViewMiddleware',
'django.contrib.auth.middleware.AuthenticationMiddleware',
'django.contrib.messages.middleware.MessageMiddleware',
'django.middleware.clickjacking.XFrameOptionsMiddleware',
)
TEMPLATE_DIRS = (os.path.join(BASE_DIR, 'template'),
# Put strings here, like "/home/html/django_templates" or "C:/www/django/templates".
# Always use forward slashes, even on Windows.
# Don't forget to use absolute paths, not relative paths.
)
ROOT_URLCONF = 'smvdu_portal.urls'
WSGI_APPLICATION = 'smvdu_portal.wsgi.application'
# Database
# https://docs.djangoproject.com/en/1.6/ref/settings/#databases
DATABASES = {
'default': {
'ENGINE': 'django.db.backends.sqlite3',
'NAME': os.path.join(BASE_DIR, 'sqlite3.db'),
'USER': '',
'PASSWORD': '',
'HOST': '', # Empty for localhost through domain sockets or '127.0.0.1' for localhost through TCP.
'PORT': '',
}
}
# Internationalization
# https://docs.djangoproject.com/en/1.6/topics/i18n/
TEMPLATE_CONTEXT_PROCESSORS = (
"django.contrib.auth.context_processors.auth",
"django.core.context_processors.debug",
"django.core.context_processors.i18n",
"django.core.context_processors.media",
"django.core.context_processors.static",
"django.core.context_processors.tz",
"django.contrib.messages.context_processors.messages",
'django.core.context_processors.request',
)
LANGUAGE_CODE = 'en-us'
TIME_ZONE = 'UTC'
USE_I18N = True
USE_L10N = True
USE_TZ = True
MEDIA_ROOT = os.path.join(BASE_DIR, 'static/uploaded_image')
# Static files (CSS, JavaScript, Images)
# https://docs.djangoproject.com/en/1.6/howto/static-files/
STATIC_URL = '/static/'
STATICFILES_DIRS = (os.path.join(BASE_DIR, 'static'),
# Put strings here, like "/home/html/static" or "C:/www/django/static".
# Always use forward slashes, even on Windows.
# Don't forget to use absolute paths, not relative paths.
)
from .email_info import *
EMAIL_USE_TLS = EMAIL_USE_TLS
EMAIL_HOST = EMAIL_HOST
EMAIL_HOST_USER = EMAIL_HOST_USER
EMAIL_HOST_PASSWORD = EMAIL_HOST_PASSWORD
EMAIL_PORT = EMAIL_PORT
AUTH_PROFILE_MODULE='student.student'
form.py is
from django.forms import ModelForm
from student.models import student
class student_form(ModelForm):
class Meta:
model=student
fields = ['branch', 'image', 'dateofbirth']
model.py is
class student(models.Model):
u=models.OneToOneField(User)
sex=models.CharField(max_length=10)
branch=models.CharField(max_length=10)
dateofbirth=models.CharField(max_length=20)
image=models.CharField(max_length=20)
course_taken=models.ManyToManyField(Course,null=True, blank=True)
def __str__(self):
return self.u.username
User.profile=property(lambda u: student.objects.get_or_create(u=u)[0])
url.py is
from django.conf.urls import patterns, include, url
from django.contrib import admin
admin.autodiscover()
urlpatterns = patterns('',
# Examples:
(r'^quizes/',include('quiz.urls')),
url(r'^$', 'student.views.home', name='home'),
url(r'^login$', 'student.views.login_view', name='login'),
url(r'^course$', 'student.views.courseView', name='courses'),
url(r'^admin/', include(admin.site.urls)),
url(r'^faculty$', 'student.views.faculty', name='faculty'),
url(r'^about$', 'smvdu_portal.views.about', name='about'),
url(r'^logout$', 'student.views.logout_view', name='logout'),
url(r'^reset/$', 'student.views.reset', name='reset'),
# Map the 'app.hello.reset_confirm' view that wraps around built-in password
# reset confirmation view, to the password reset confirmation links.
url(r'^reset/(?P<uidb64>[0-9A-Za-z_\-]+)/(?P<token>[0-9A-Za-z]{1,13}-[0-9A-Za-z]{1,20})/$',
'student.views.reset_confirm', name='password_reset_confirm'),
# Map the 'app.hello.success' view to the success message page.
url(r'^success/$', 'student.views.success', name='success'),
url(r'^success2/$', 'student.views.success2', name='success2'),
url(r'^edit/$','student.views.edit',name='edit')
)
i am getting error
IntegrityError at /edit/
NOT NULL constraint failed: student_student.u_id