Model Manager Boilerplate

managers.py

from django.db.models.query import QuerySet
from django.db import models


# WatchMixin
# ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
class WatchMixin(object):
    pass


# WatchQuerySet - allows for model manager chaining
# ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
class WatchQuerySet(QuerySet, WatchMixin):
    pass


# WatchManager
# ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
class WatchManager(models.Manager, WatchMixin):


    def get_query_set(self):
        return WatchQuerySet(self.model, using=self._db)