def connexion(request):
	form = AuthenticationForm(request.POST)
	if request.method == 'POST':
       		if form.is_valid():
			username = form.cleaned_data['username']
	    		password = form.cleaned_data['password']
	    		user = authenticate(username=username, password=password)
			if user is not None:
				message = "Utilisateur reconnu"
				return render_to_response('connexion/index.html', {'form': form, 'message' : message},context_instance = RequestContext(request))
	    		else:
				message_error = "Utilisateur non-connu"
				return render_to_response('connexion/index.html', {'form': form, 'message_error' : message_error},context_instance = RequestContext(request))
		else:
 	     		form = AuthenticationForm()
	else:
		form = AuthenticationForm()
  	message_if = "On rentre meme pas dans la boucle"
	return render_to_response('connexion/index.html', {'form': form, 'message_if' : message_if},context_instance = RequestContext(request))