def pie_view(request, what, choice_dict, page_title):
    numbers = SortedDict()
    year, month = request.GET.get('year'), request.GET.get('month')
    numbers['all'] = _make_numbers(
        what, year=year, month=month)

    for group in _office_groups():
        numbers[group] = _make_numbers(
            what, office_title=group, year=year, month=month)

    json_data = []
    for office_title, amount in numbers.items():

        amount_items = sorted(
            amount.items(), key=lambda l: -l[1]) # sort by no of clients

        info = {}
        data = []
        info['store'] = dict(
            fields=['category', 'total'],
            data=data)
        office_title = office_title == u'all' and u'Gesamt' or office_title
        info['title'] = u'Kontaktaufnahme: %s' % office_title
        for key, value in amount_items:
            data.append(dict(
                category=choice_dict[key],
                total=value
                ))

        json_data.append(info)

    return render_to_response(
        'lotsen/pie.html', template_variables(
            request,
            page_title=page_title,
            numbers=numbers,
            json_data=json.dumps(json_data),
            ))

@user_passes_test(is_teamleader_or_superuser)
def contacted_through(request):
    return pie_view(
        request,
        'issue__client__contacted_through',
        choices.CONTACTED_THROUGH_DICT,
        'Kontaktaufnahme',
        )