You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
 
 
 

38 lines
992 B

from django.contrib.contenttypes.fields import GenericRelation
from django.db import models
from django.db.models import OneToOneField
from common.utils import lazyproperty
from .models import LabeledResource
__all__ = ['LabeledMixin']
class LabeledMixin(models.Model):
labels = GenericRelation(LabeledResource, object_id_field='res_id', content_type_field='res_type')
class Meta:
abstract = True
@classmethod
def label_model(cls):
pk_field = cls._meta.pk
model = cls
if isinstance(pk_field, OneToOneField):
model = pk_field.related_model
return model
@lazyproperty
def real(self):
pk_field = self._meta.pk
if isinstance(pk_field, OneToOneField):
return getattr(self, pk_field.name)
return self
@property
def res_labels(self):
return self.real.labels
@res_labels.setter
def res_labels(self, value):
self.real.labels.set(value, bulk=False)