class RowInfo(models.Model):
    class Meta:
        abstract = True
    updated = models.DateTimeField(default=django.utils.timezone.now())
    created = models.DateTimeField(default=None)
    #updated = models.ForeignKey(settings.AUTH_USER_MODEL,on_delete=models.CASCADE)
    #created = models.ForeignKey(settings.AUTH_USER_MODEL,on_delete=models.CASCADE)

    def save(self, *args, **kwargs):
        print(self.id)
        self.updated = django.utils.timezone.now()
        operation = 'I' if self.id is None else 'U'
        if(operation == 'I'):
            print('Insert operation')
            self.created = django.utils.timezone.now()
        else:
            print('Update operation')

        super().save(*args, **kwargs)

    def delete(self):
        print(self.id)
        operation = 'D'
        print('Delete operation')
        super().delete()

class Dicti(RowInfo):
    code = models.CharField(max_length=255,null=True,blank=True)
    numcode = models.IntegerField(null=True,blank=True)
    fullname = models.CharField(max_length=255)
    shortname = models.CharField(max_length=255)