Subscriber Model

To enable observers that listen to model changes.

Update your django model by subclaassing SubscriptionModel

• Swap models.Model with model_subscription.SubscriptionModel
• This comes with it’s own objects QuerySet manager.

BEFORE

from django.db import models


class MyModel(models.Model):
    field_a = models.CharField(max_length=255)

AFTER

from moddel_subscripton import SubscriptionModel


class MyModel(SubscriptionModel):
    field_a = models.CharField(max_length=255)

Alternatively if you don’t want to subclass the SubscriptionModel see below.

Using the SubscriptionModelMixin and the SubscriptionQuerySet

BEFORE

from django.db import models


class MyModelQuerySet(models.QuerySet):

    def active(self):
        ...


class MyModel(models.Model):
    field_a = models.CharField(max_length=255)

    objects = MyModelQuerySet.as_manager()

AFTER

from django.db import models

from model_subscription.mixin import SubscriptionModelMixin
from model_subscription.model import SubscriptionQuerySet


class MyModelQuerySet(SubscriptionQuerySet):

    def active(self):
        ...


class MyModel(SubscriptionModelMixin, models.Model):
    field_a = models.CharField(max_length=255)

    objects = MyModelQuerySet.as_manager()