add some new fields to sale item

apps/warehouse/migrations/0032_rename_product_inventoryquotasaleitem_gov_product_and_more.py

@@ -0,0 +1,30 @@
+# Generated by Django 5.0 on 2025-09-22 06:24
+
+import django.db.models.deletion
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('pos_device', '0074_stakeholders_default'),
+        ('warehouse', '0031_inventoryquotasaleitem_delivery_type_and_more'),
+    ]
+
+    operations = [
+        migrations.RenameField(
+            model_name='inventoryquotasaleitem',
+            old_name='product',
+            new_name='gov_product',
+        ),
+        migrations.AddField(
+            model_name='inventoryquotasaleitem',
+            name='free_product',
+            field=models.ForeignKey(null=True, on_delete=django.db.models.deletion.CASCADE, related_name='sale_items', to='pos_device.posfreeproducts'),
+        ),
+        migrations.AddField(
+            model_name='inventoryquotasaletransaction',
+            name='product_type',
+            field=models.CharField(choices=[('gov', 'government'), ('free', 'free')], default='free', max_length=20),
+        ),
+    ]

apps/warehouse/models.py

@@ -1,6 +1,7 @@
 import string
 import random
 from apps.authentication.models import User, Organization
+from apps.pos_device.models import POSFreeProducts
 from apps.product import models as product_models
 from apps.pos_device.models import Device
 from apps.herd.models import Rancher
@@ -100,6 +101,11 @@ class InventoryQuotaSaleTransaction(BaseModel):
     )
     price_type = models.CharField(choices=type_of_price, max_length=50, null=True)
     description = models.TextField(blank=True, null=True)
+    product_type_choices = (
+        ('gov', 'government'),
+        ('free', 'free'),
+    )
+    product_type = models.CharField(max_length=20, choices=product_type_choices, default='free')
     herd_owners_number = models.PositiveBigIntegerField(default=0)
     transactions_number = models.PositiveBigIntegerField(default=0)
     status_type = (
@@ -142,12 +148,18 @@ class InventoryQuotaSaleItem(BaseModel):
         related_name='sale_items',
         null=True
     )
-    product = models.ForeignKey(
+    gov_product = models.ForeignKey(
         product_models.Product,
         on_delete=models.CASCADE,
         related_name='sale_items',
         null=True
     )
+    free_product = models.ForeignKey(
+        POSFreeProducts,
+        on_delete=models.CASCADE,
+        related_name='sale_items',
+        null=True
+    )
     image = models.CharField(max_length=150, null=True)
     name = models.CharField(max_length=150, null=True)
     price_type = models.CharField(max_length=150, null=True)
@@ -159,6 +171,10 @@ class InventoryQuotaSaleItem(BaseModel):
     is_extra = models.BooleanField(default=False)
     is_pre_sale = models.BooleanField(default=False)
 
+    @property
+    def product(self):
+        return self.gov_product or self.free_product
+
     def __str__(self):
         return f'Item {self.product} - {self.weight} Kg - {self.total_price}'
 

apps/warehouse/pos/api/v1/serializers.py

@@ -201,7 +201,8 @@ class InventoryQuotaSaleItemSerializer(serializers.ModelSerializer):
         fields = [
             'id',
             "transaction",
-            "product",
+            "gov_product",
+            "free_product",
             "product_name",
             "image",
             "name",