some apis of pos

apps/warehouse/models.py

@@ -1,5 +1,7 @@
 from apps.product import models as product_models
 from apps.authentication.models import User
+from apps.pos_device.models import Device
+from apps.herd.models import Rancher
 from apps.core.models import BaseModel
 from django.db import models
 
@@ -41,6 +43,18 @@ class InventoryEntry(BaseModel):
 
 
 class InventoryQuotaSaleTransaction(BaseModel):
+    rancher = models.ForeignKey(
+        Rancher,
+        on_delete=models.CASCADE,
+        related_name='transactions',
+        null=True
+    )
+    pos_device = models.ForeignKey(
+        Device,
+        on_delete=models.CASCADE,
+        related_name='transactions',
+        null=True
+    )
     transaction_id = models.CharField(max_length=50, null=True)
     seller_organization = models.ForeignKey(
         product_models.Organization,