If you create a code like above, create a value in index.html, and press the button to print only one value. How can I solve this problem?

    if request.method == 'POST':
        post = Post()
        post.yyyy = request.POST['yyyy']
        post.mm = request.POST['mm']
        post.dd = request.POST['dd']
        post.cookname = request.POST['cookname']
        post.save()
        global post_list
        post_list = {
            'yyyy':post.yyyy,
            'mm':post.mm,
            'dd':post.dd,
            'cookname':post.cookname
        }

        return redirect('index')
    else:
        post = Post.objects.all()
    return render(request, 'dncapp/index.html', {'post':post})```