Not Working With @proeprty

[bahaasamoudi]

i have this model

class CachedEvent(models.Model):
      key = models.CharField(max_length=255)
      timestamp = models.DateTimeField()
      eventname = models.CharField(max_length=255)

@property
def priority(self):
    eventtype, created = EventType.objects.get_or_create(
        eventname=self.eventname
    )
    return eventtype.priority

viewSet"

class EventViewSet(viewsets.ReadOnlyModelViewSet):
       queryset = CachedEvent.objects.all()
       serializer_class = CachedEventSerializer

serializer:

class CachedEventSerializer(serializers.ModelSerializer):
     id = serializers.CharField(source='original_id')

     class Meta:
        model = CachedEvent
        fields = ['key', 'timestamp', 'id', 'eventname', 'priority']

it show error "Cannot resolve keyword 'priority' into field. Choices are: eventname, id, key, timestamp "

[izimobil]

You can't use sorting or filtering for dynamic properties, just disable sorting and search for this column in your JS code (see: https://datatables.net/reference/option/columns.orderable and https://datatables.net/reference/option/columns.searchable).

[morenoh149]

is it possible to surface a model's @Property as a value? not looking to order or sort by this, just extra data for informational purposes.

I have something like this, private works but held does not.

# models.py

class Company(models.Model):
    ...fields...
    is_private = models.BooleanField(default=False)

    @cached_property
    def is_held(company):
        ...logic...

# app.js
$("#table").DataTable({
  serverSide: true,
  ajax: "/api/experts/?format=datatables",
  ordering: false,
  pagingType: "full_numbers",
  responsive: true,
  columns: [
    {
      data: "company_private",
      visible: false,
      orderable: false,
      name: "company.is_private",
      defaultContent: "-",
    },
    {
      data: "company_held",
      visible: false,
      orderable: false,
      name: "company.is_held",
      defaultContent: "-",
    },
  ],
});