gistfile1.py

@login_required
def backgroundview(request):
	if request.is_ajax():
		form = BackgroundModelForm(request.POST, request.FILES)
		if form.is_valid():
			try:
				g = BackgroundModel.objects.get(user=request.user)
			except BackgroundModel.DoesNotExist:
				data = form.save(commit=False)
				data.user = request.user
				data.save()
			else:
				BackgroundModelForm(request.POST, request.FILES, instance=g).save()
			return HttpResponse("'"+g.background.url+"'")
	else:
		form = BackgroundModelForm()
		return render_to_response("cover.html", {'form': form}, context_instance=RequestContext(request))