Added last subscribe/unsubscribe dates

apps/notification/models.py

@@ -1,10 +1,12 @@
 """Notification app models."""
 from django.conf import settings
 from django.db import models
+from django.utils.timezone import now
 from django.utils.translation import ugettext_lazy as _
+
 from account.models import User
 from utils.methods import generate_string_code
-from utils.models import ProjectBaseMixin, TranslatedFieldsMixin, TJSONField
+from utils.models import ProjectBaseMixin, TJSONField, TranslatedFieldsMixin
 
 
 class SubscriptionType(ProjectBaseMixin, TranslatedFieldsMixin):
@@ -109,6 +111,9 @@ class Subscriber(ProjectBaseMixin):
 
     subscription_type = models.ForeignKey(SubscriptionType, on_delete=models.CASCADE, null=True, default=None)
 
+    subscribe_date = models.DateTimeField(_('Last subscribe date', blank=True, null=True, default=now))
+    unsubscribe_date = models.DateTimeField(_('Last unsubscribe date'), blank=True, null=True, default=None)
+
     objects = SubscriberManager.from_queryset(SubscriberQuerySet)()
 
     class Meta:
@@ -125,6 +130,7 @@ class Subscriber(ProjectBaseMixin):
 
     def unsubscribe(self):
         """Unsubscribe user."""
+        self.unsubscribe_date = now()
         self.state = self.UNUSABLE
         self.save()
 

apps/notification/serializers/common.py

@@ -35,6 +35,8 @@ class SubscribeSerializer(serializers.ModelSerializer):
             'email',
             'subscription_type',
             'state',
+            'subscribe_date',
+            'unsubscribe_date'
         )
         read_only_fields = ('state',)