<div class="col-md-9 col-md-offset-2" style="background-color: white; margin-top:10px; border-radius: 8px;">
          {% if message %}
          <b>{{message}}</b>
          {% endif %}
          <form id="form" method="post" action="">{% csrf_token %}
            <table>{{form}}</table>
            <div class="col-lg-9 col-lg-offset-2">
                  <button type="submit" class="btn btn-primary">Submit</button>
                </div>
          </form>
      </div>

url(r'^login', 'users.views.login', name='login'),

from django.shortcuts import render
from deck1.models import Card
from django.template import RequestContext
from django.shortcuts import render_to_response
from django.http import HttpResponseRedirect, HttpResponse
from django.contrib.auth.forms import UserCreationForm
from django.contrib.auth.forms import AuthenticationForm
from django.contrib.auth import login, authenticate, logout
from django.contrib.auth.decorators import login_required
from users.forms import RegisterForm

def login(request):
    message = None
    if request.method=='POST':
        form = AuthenticationForm(request.POST)
        if form.is_valid():
            username = request.POST['username']
            password = request.POST['password']
            user = authenticate(username=username, password=password)
            if user is not None:
                if user.is_active:
                    login(request, user)
                    message = "I'm in"
                else:
                    message = "Non active"
            else:
                message = "User or password invalid"
    else:
        form = AuthenticationForm()
    return  render_to_response('login.html',{'form':form, 'message':message}, context_instance=RequestContext(request))

def login_view(request):
    message = None
    if request.method=='POST':
        form = AuthenticationForm(request.POST)
        if form.is_valid():
            username = request.POST['username']
            password = request.POST['password']
            user = authenticate(username=username, password=password)
            if user is not None:
                if user.is_active:
                    login(request, user)
                    message = "I'm in"
                else:
                    message = "Non active"
            else:
                message = "User or password invalid"
    else:
        form = AuthenticationForm()
    return  render_to_response('login.html',{'form':form, 'message':message},
            context_instance=RequestContext(request))