Django session not saved

[Malhar Vora]

Hello

I have simple application which checks for username and password in database as well as looks in session for key "user_id". If user exists and login gets successfull then page is redirected to admin page. Here problem is I am storing username in session in one view and retrieving it another but at the time of retrieval it says that the key does not exist in session. 

I have just started learning Django and this is my first project. Please help me.

Here is my views.py : 

====================================================================================================

# Create your views here.

from BaseHTTPServer import BaseHTTPRequestHandler

from django.shortcuts import render_to_response

from django.http import HttpResponse, HttpResponseRedirect

from django.views.decorators.csrf import csrf_exempt

from webapp.models import User

def index(request):

    if request.session.get("user_id", False):

        print "Used logged in"

        return HttpResponseRedirect("webadmin")

    else:

        print "Used not logged in"

        return  render_to_response("index.html", {})

@csrf_exempt

def login(request):

    username = request.POST.get("username", None)

    password = request.POST.get("password", None)

    vals = {}

    if not username or not password:

        print "Please enter credentials"

        vals['error'] = "Invalid credentials"

        return HttpResponseRedirect("/")

    elif not isUserExists(username, password):

        print "Invalid credentials"

        vals['error'] = "Invalid credentials"

        return HttpResponseRedirect("/")

    else:

        request.session['user_id'] = username

        request.session.save()

        request.session.modified = True

        print "&&&&&&&&&&&&&&&&& : " + request.session['user_id']

        print "Sessino value written"

        return HttpResponseRedirect("webadmin")

def webadmin(request):

    '''

        Controller to handle /webadmin url

    '''

    return render_to_response("admin.html", {})

def isUserExists(uname, pwd):

    '''

        Check if user exists in database or not

    '''

    users = User.objects.filter(username=uname, password=pwd)

    if len(users) >0:

        print "Access granted"

        return True

    else:

        print "Access denied"

        return False

#########################################################################################

I am using file based session and has following setting in settings.py file.

SESSION_ENGINE = "django.contrib.sessions.backends.file"

SESSION_SAVE_EVERY_REQUEST=True

Thanks

Malhar Vora

[Karen Tracey]

Please ask questions about using Django on django-users. The topic of this list is the development of Django itself.

Thanks,
Karen