def subscribe(request):
    if request.method == 'GET':
        context = {
            'where': request.path
        }
        resp = render(request, 'templates/articles/subscribe_form.html', context)
        return resp
    elif request.method == 'POST':
        author = request.POST['author']
        user_email = request.POST['email']
        author_articles = []
        for article in articles_list:
            if author == article[1]:
                author_articles.append(article)
        context = {
            'author': author,
            'email': user_email,
            'articles': generate_html(author_articles)
        }
        return render(request, 'templates/articles/subscribe.html', context)