UniqueValidator raises exception for nested objects #2403
Description
I have a model Service which has contains a ForeignKey to atSifrantStoritev_model.
class Service(RemarkModel):
code = ForeignKey(tSifrantStoritev_model, to_field='SiSto', related_name='services', verbose_name=_(u'The code of the given service.'), help_text=_(u'The unique code given to the given service, usually by health insurance companies.'))
class tSifrantStoritev_model(models.Model):
class Meta:
verbose_name = _(u"tSifSto_mo")
# Unique added by Gregor for index
# SiSto is referenced from Racuni.models.Service as Foreign key
SiSto = models.CharField(max_length=1000, blank=True, unique=True) Using ModelViewSet for Service andatSifrantStoritev_model models the update for the object of type Service fails with the folloving data.
dict: {'code': {'SiSto': [u'This field must be unique.']}}I traced the source of the exception to the function
def exclude_current_instance(self, queryset):
"""
If an instance is being updated, then do not include
that instance itself as a uniqueness conflict.
"""
if self.instance is not None:
return queryset.exclude(pk=self.instance.pk)
return querysetin the validators.py file. The method fails to remove a currenttSifrantStoritev_model object since self.instance equals to None. Could this be a bug in Django Rest validation system or am I missing something?