views.py 文件源码

def get(self, request, *args, **kwargs):
        _page = get_object_or_404(Page, pk=request.GET.get('page_id'))

        # release page for all users which did not update during the last timeframe
        PageIndicator.objects.filter(edited_on__lte=self.time_past, page=_page).delete()

        page_indicators = PageIndicator.objects.filter(edited_on__gte=self.time_past, page=_page)\
            .exclude(editor=request.user)

        response = {}
        if page_indicators.exists():
            response['conflict'] = True
            editing_user = page_indicators.first()
            response['concurrent_user'] = [editing_user.editor.username]
            # default behavior for concurrent users is blocking
            response['block_editing'] = getattr(settings, 'CONCURRENT_BLOCK_EDITING', BLOCK_EDITING_DEFAULT)

            response['message'] = _(u'Unfortunately you cannot edit this page at the moment: '
                                    u'user {user} is blocking it since {time}').format(
                    user=editing_user.editor,
                    time=_date(editing_user.started_editing, 'D, d. b, H:i'))
        else:
            response['conflict'] = False

        return JsonResponse(json.dumps(response), safe=False)