add new app

core/apps/wherehouse/models/inventory.py

@@ -0,0 +1,20 @@
+from django.db import models
+from django.utils.translation import gettext_lazy as _
+
+from core.apps.shared.models import BaseModel
+from core.apps.wherehouse.models.wherehouse import WhereHouse
+from core.apps.products.models.product import Product
+
+
+class Inventory(BaseModel):
+    wherehouse = models.ForeignKey(WhereHouse, on_delete=models.CASCADE, related_name='inventories')
+    quantity = models.PositiveIntegerField(default=0)
+    product = models.ForeignKey(Product, on_delete=models.CASCADE, related_name='inventories')
+
+    def __str__(self):
+        return f'{self.product} in {self.wherehouse}'
+
+    class Meta:
+        verbose_name = _('inventar')
+        verbose_name_plural = _("inventarlar")
+