def index(request):
    if request.method == "POST":
        form = ExchangeForm(request.POST)
        if form.is_valid():
            genre = None
            for code, name in GENRE_CHOICES:
                if code == form.cleaned_data["genre"]:
                    genre = name
                    break
            send_msg(
                form.cleaned_data["email"],
                form.cleaned_data["name"],
                form.cleaned_data["title"],
                form.cleaned_data["artist"],
                genre,
                form.cleaned_data["price"],
                form.cleaned_data["comment"],
            )
            return redirect('/thank-you/')
        return render(request, "index.html", {"form": form})

    form = ExchangeForm()
    return render(request, "index.html", {"form": form})