website/conservancy/contacts/views.py

import logging

from django.forms import ModelForm
from django.views.decorators.csrf import csrf_exempt
from django.shortcuts import render

from .models import Unsubscription

logger = logging.getLogger(__name__)

class UnsubscribeForm(ModelForm):
    class Meta:
        model = Unsubscription
        fields = ['email']


# Exempt from CSRF protection so that it can be triggered by Gmail's on-click
# unsubscribe.
@csrf_exempt
def unsubscribe(request):
    if request.method == 'POST':
        logger.debug('Unsubscribe GET: %s', request.GET)
        logger.debug('Unsubscribe POST: %s', request.POST)
        form = UnsubscribeForm(request.GET | request.POST)
        if form.is_valid():
            form.save()
            logger.info('Unsubscribed %s', form.cleaned_data['email'])
            return render(request, 'contacts/unsubscribe_success.html')
    else:
        form = UnsubscribeForm()
    return render(request, 'contacts/unsubscribe.html', {'form': form})