BaseModel.py

from django.db import models
from simple_history.models import HistoricalRecords
from django.utils.translation import ugettext_lazy as _


class GetOrNoneManager(models.Manager):
  """
  Adds get_or_none method to objects
  """
  def get_object_or_none(self, default_value=None, *args, **kwargs):
    try:
      return self.get(*args, **kwargs)
    except self.model.DoesNotExist:
      return default_value


class BaseModel(models.Model):
  created   = models.DateTimeField(_("Creaeted"), auto_now_add=True)
  updated   = models.DateTimeField(_("Updated"), auto_now=True)
  history   = HistoricalRecords(inherit=True)
  is_active = models.BooleanField(_("Active"), default=True)

  objects = GetOrNoneManager()

  class Meta:
    abstract = True