def custom_login(request):
    context = {}
    if request.method == 'POST':
        form = LoginForm(request.POST)
        if form.is_valid():
            user = authenticate(login=form.cleaned_data['login'], password=form.cleaned_data['password'])
            if user is not None:
                login(request, user)
                context['user'] = user
            else:
                context['user'] = request.user
    else:
        form = LoginForm()
        context['user'] = request.user
    context['form'] = form
    return render(request, 'muzeum/login.html', context)