views.py 文件源码

def modify_certificates(self, request, pk=None):
        calendar = self.get_object()
        certificate_id = request.query_params['cert_id']

        try:
            certificate = Certificate.objects.get(id=certificate_id)
        except Certificate.DoesNotExist:
            raise NotFound('Certificate "%s" not found.' % certificate_id)

        if request.method == 'POST':
            # check if already there, and if so, raise 409
            if calendar.certificates.filter(id=certificate.id).exists():
                raise ContentError('Certificate "%s" already selected.' % certificate_id)

            calendar.certificates.add(certificate)
        elif request.method == 'DELETE':
            if not calendar.certificates.filter(id=certificate.id).exists():
                raise ContentError('Certificate "%s" not in this calendar.' % course_id)

            calendar.certificates.remove(certificate)

        genie.clear_cached_recommendations(calendar.profile_id, calendar.pk)
        return Response({'success': True})