add some new data to device login data, first part of broker to stake holders assignment

apps/pos_device/models.py

@@ -2,6 +2,7 @@ import random
 import string
 
 from apps.authentication.models import Organization
+from apps.product.models import Broker
 from apps.product.models import Product
 from django.contrib.postgres.fields import ArrayField
 from apps.authorization.models import UserRelations
@@ -294,3 +295,29 @@ class POSFreeProducts(BaseModel):
 
     def save(self, *args, **kwargs):
         return super(POSFreeProducts, self).save(*args, **kwargs)
+
+
+class BrokerStakeHolderAssignment(BaseModel):
+    device = models.ForeignKey(
+        Device,
+        on_delete=models.CASCADE,
+        related_name="stake_brok_assigment",
+        null=True
+    )
+    stake_holder = models.ForeignKey(
+        StakeHolders,
+        on_delete=models.CASCADE,
+        related_name='stake_brok_assignment',
+        null=True
+    )
+    broker = models.ForeignKey(
+        Broker,
+        on_delete=models.CASCADE,
+        related_name='stake_brok_assignment',
+        null=True
+    )
+    
+    def save(self, *args, **kwargs):
+        return super(BrokerStakeHolderAssignment, self).save(*args, **kwargs)
+
+