remove obviously unnecessary field

apps/notification/migrations/0012_remove_subscribe_subscribe_date.py

@@ -0,0 +1,17 @@
+# Generated by Django 2.2.7 on 2020-01-27 16:37
+
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('notification', '0011_auto_20200124_1351'),
+    ]
+
+    operations = [
+        migrations.RemoveField(
+            model_name='subscribe',
+            name='subscribe_date',
+        ),
+    ]

apps/notification/models.py

@@ -187,7 +187,6 @@ class SubscribeQuerySet(models.QuerySet):
 
 class Subscribe(ProjectBaseMixin):
     """Subscribe model."""
-    subscribe_date = models.DateTimeField(_('Last subscribe date'), default=now(), blank=True, null=True)
     unsubscribe_date = models.DateTimeField(_('Last unsubscribe date'), blank=True, null=True, default=None)
 
     subscriber = models.ForeignKey(Subscriber, on_delete=models.CASCADE, null=True)
@@ -198,6 +197,10 @@ class Subscribe(ProjectBaseMixin):
 
     objects = SubscribeQuerySet.as_manager()
 
+    @property
+    def subscribe_date(self):
+        return self.created
+
     class Meta:
         """Meta class."""
 

apps/notification/serializers/common.py

@@ -163,6 +163,9 @@ class SubscribeObjectSerializer(serializers.ModelSerializer):
             'unsubscribe_date',
             'subscription_type'
         )
+        extra_kwargs = {
+            'subscribe_date': {'read_only': True},
+        }
 
     def get_subscription_type(self, instance):
         return SubscriptionTypeSerializer(