import device in notification structure

apps/notification/models.py

@@ -1,5 +1,6 @@
 from apps.core.models import BaseModel
 from apps.authentication.models import Organization
+from apps.pos_device.models import Device
 from django.db import models
 
 
@@ -10,7 +11,12 @@ class Notification(BaseModel):
         ('transaction', 'Transaction'),
         ('system', 'System'),
     )
-
+    device = models.ForeignKey(
+        Device,
+        on_delete=models.CASCADE,
+        related_name='notifications',
+        null=True
+    )
     organization = models.ForeignKey(
         Organization,
         on_delete=models.CASCADE,