free sale of inventory entry system deployment - add dhi state to rancher

apps/warehouse/models.py

@@ -1,7 +1,7 @@
 import string
 import random
+from apps.authentication.models import User, Organization
 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
@@ -149,9 +149,44 @@ class InventoryQuotaSaleItem(BaseModel):
     weight = models.PositiveBigIntegerField(default=0)
     unit_price = models.PositiveBigIntegerField(default=0)
     total_price = models.PositiveBigIntegerField(default=0)
+    is_extra = models.BooleanField(default=False)
 
     def __str__(self):
         return f'Item {self.product} - {self.weight} Kg - {self.total_price}'
 
     def save(self, *args, **kwargs):
         return super(InventoryQuotaSaleItem, self).save(*args, **kwargs)
+
+
+class ExtraSale(BaseModel):
+    organization = models.ForeignKey(
+        Organization,
+        on_delete=models.CASCADE,
+        related_name='extra_sales',
+        null=True
+    )
+    distribution = models.ForeignKey(
+        product_models.QuotaDistribution,
+        on_delete=models.CASCADE,
+        related_name='extra_sales',
+        null=True
+    )
+    transaction = models.ForeignKey(
+        InventoryQuotaSaleTransaction,
+        on_delete=models.CASCADE,
+        related_name='transactions',
+        null=True
+    )
+    sale_item = models.ForeignKey(
+        InventoryQuotaSaleItem,
+        on_delete=models.CASCADE,
+        related_name='sale_items',
+        null=True
+    )
+    weight = models.IntegerField(default=0)
+
+    def __str__(self):
+        return f'Extra Sale on {self.organization.name} - {self.distribution.distribution_id}'
+
+    def save(self, *args, **kwargs):
+        return super(ExtraSale, self).save(*args, **kwargs)