add new app

core/apps/wherehouse/models/__init__.py

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+from .inventory import *
+from .wherehouse import *
+from .stock_movemend import *

core/apps/wherehouse/models/inventory.py

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+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")
+        

core/apps/wherehouse/models/stock_movemend.py

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+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 StockMovemend(BaseModel):
+    TYPE = (
+        ('IN', 'in'),
+        ('OUT', 'out'),
+        ('TRANSFER', 'transfer'),
+    )
+
+    wherehouse_to = models.ForeignKey(
+        WhereHouse, on_delete=models.CASCADE, related_name='stocks_to'
+    )
+    wherehouse_from = models.ForeignKey(
+        WhereHouse, on_delete=models.CASCADE, related_name='stocks_from'
+    )
+    product = models.ForeignKey(
+        Product, on_delete=models.CASCADE, related_name='stocks'
+    )
+    quantity = models.PositiveIntegerField(default=0)
+    movemend_type = models.CharField(max_length=20, choices=TYPE)
+
+    def __str__(self):
+        return f'{self.product} send from {self.wherehouse_from} to {self.wherehouse_to}'
+    
+    class Meta:
+        verbose_name = _('Mahsulotlarni kochirish')
+        verbose_name_plural = _('Mahsulotlarni kochirish')

core/apps/wherehouse/models/wherehouse.py

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+from django.db import models
+from django.utils.translation import gettext_lazy as _
+
+from core.apps.shared.models import BaseModel
+from core.apps.company.models.branch import Branch
+
+
+class WhereHouse(BaseModel):
+    branch = models.ForeignKey(Branch, on_delete=models.CASCADE, related_name='wherehouses')
+    name = models.CharField(max_length=200)
+    address = models.CharField(max_length=200)
+
+    def __str__(self):
+        return self.name
+    
+    class Meta:
+        verbose_name = _('omborxona')
+        verbose_name_plural = _('omborxonalar')