I put this here mostly for my own documentation.<\/p>\n
Before:<\/p>\n
@permission_required('training.view_signupdetail') \r\ndef class_history_attend(request,class_id):\r\n \r\n tc = get_object_or_404(TrainingClass,id=class_id)\r\n \r\n queryset = SignupDetail.objects.filter(schedule__training_class = tc,attended = True).order_by('session__user__username')\r\n \r\n params = {'queryset': queryset,\r\n 'template_name': 'class_history.html',\r\n 'extra_context': {'tc': tc}}\r\n return object_list(request, **params) <\/pre>\nAfter:<\/p>\n
class ClassHistoryAttendView(ListView):\r\n ## Set the template name\r\n template_name = 'class_history.html' \r\n\r\n ## Override dispatch to apply the permission decorator\r\n @method_decorator(permission_required('training.view_trainingclass'))\r\n def dispatch(self, *args, **kwargs):\r\n return super(ClassHistoryAttendView, self).dispatch(*args, **kwargs) \r\n \r\n ## Define get_queryset to bring in the supplied class number and build the query\r\n def get_queryset(self):\r\n self.tc = get_object_or_404(TrainingClass,id=self.kwargs.get('class_id',None))\r\n return SignupDetail.objects.filter(schedule__training_class = self.tc,attended = True).order_by('session__user__username')\r\n \r\n ## Override get_context_data to add the class number to the context for use by the template\r\n def get_context_data(self, **kwargs):\r\n context = super(ClassHistoryAttendView, self).get_context_data(**kwargs)\r\n context['tc'] = self.tc\r\n return context<\/pre>\nUPDATE:<\/p>\n
The override of dispatch<\/code> allows the application of the permission decorator. Note the @method_decorator<\/code> wrapper around the traditional view decorator for permission use.<\/p>\nThe other two method overrides are necessary to access the self<\/code> instance of the object.<\/p>\nAn easier example still uses the permission override, but others are not needed.<\/p>\n
Before:<\/p>\n
@permission_required('b2c.view_event')\r\ndef list_event(request):\r\n params = {'queryset': Event.objects.all(),\r\n 'paginate_by': DEFAULT_PAGINATION,\r\n 'template_name': 'event_list.html'}\r\n return object_list(request, **params)<\/pre>\nAfter:<\/p>\n
class ListEventView(ListView):\r\n ## The basics\r\n template_name = 'event_list.html' \r\n paginate_by = DEFAULT_PAGINATION\r\n queryset = Event.objects.all()\r\n\r\n ## Override dispatch to apply the permission decorator\r\n @method_decorator(permission_required('b2c.view_event'))\r\n def dispatch(self, *args, **kwargs):\r\n return super(ListEventView, self).dispatch(*args, **kwargs) <\/pre>\nNote that the paginate_by variable is set in this example.<\/p>\n
Also<\/p>\n
These are the imports needed:<\/p>\n
from django.views.generic import ListView\r\nfrom django.utils.decorators import method_decorator<\/pre>\nIn urls.py<\/code>, adjust the definition to call the as_view<\/code> method of the class:<\/p>\nurl(r'^list_event\/$',ListEventView.as_view(),name='event_list')<\/pre>\n","protected":false},"excerpt":{"rendered":"I put this here mostly for my own documentation. Before: @permission_required(‘training.view_signupdetail’) def class_history_attend(request,class_id): tc = get_object_or_404(TrainingClass,id=class_id) queryset = SignupDetail.objects.filter(schedule__training_class = tc,attended = True).order_by(‘session__user__username’) params = {‘queryset’: queryset, ‘template_name’: ‘class_history.html’, ‘extra_context’: {‘tc’: tc}} return object_list(request, **params) After: class ClassHistoryAttendView(ListView): ## Set the template name template_name = ‘class_history.html’ ## Override dispatch to apply the permission decorator @method_decorator(permission_required(‘training.view_trainingclass’)) … <\/p>\n