MultipleObjectsReturned about django-bitly HOT 3 CLOSED

from django_bitly.models import Bittle, BittleManager
from django.core.exceptions import MultipleObjectsReturned

class MyBittleManager(BittleManager):

    def get_for_instance(self, obj):
        '''
        Overriding this method to handle the random MultipleObjectsReturned Errors
        '''
        app_label = obj._meta.app_label
        model = obj._meta.module_name
        try:
            btl = self.get(content_type__app_label=app_label, content_type__model=model, object_id=obj.pk)
        except MultipleObjectsReturned:
            qs = self.filter(content_type__app_label=app_label, content_type__model=model, object_id=obj.pk)
            qs[1].delete()
            btl = qs[0]
        return btl


class MyBittle(Bittle):
    objects = MyBittleManager()

    class Meta:
        proxy = True
        ordering = ("-date_created",)
        db_table = 'django_bitly_bittle'

from myproject.mybittle import MyBittle
bittle = MyBittle.objects.bitlify(some_object)