TOPIC_CHOICES = (
    ('general', 'General enquiry'),
    ('bug', 'Bug report'),
    ('suggestion', 'Suggestion'),
)

class ContactForm(forms.Form):
    topic = forms.ChoiceField(choices=TOPIC_CHOICES, label = 'ChoiceField', help_text = 'ChoiceField')
    message = forms.CharField(widget=forms.Textarea())
    sender = forms.EmailField(required=False)

def contact(request):
    if request.method == 'POST':
        form = ContactForm(request.POST)
        if form.is_valid():
            topic = form.cleaned_data['topic']
            message = form.cleaned_data['message']
            sender = form.cleaned_data.get('sender', 'noreply@example.com')
            send_mail(
                'Feedback from your site, topic: %s' % topic,
                message, sender,
                ['..@...ru']
            )
            return HttpResponseRedirect('/contact/thanks/')

    else:
        form = ContactForm()
    return render_to_response('contact.html', {'form': form})