add: add new invalid product model and create, list api added

core/apps/wherehouse/models/__init__.py

@@ -1,3 +1,4 @@
 from .inventory import *
 from .wherehouse import *
-from .stock_movemend import *
+from .stock_movemend import *
+from .invalid_product import *

core/apps/wherehouse/models/invalid_product.py

@@ -0,0 +1,43 @@
+from django.db import models
+
+# shared
+from core.apps.shared.models import BaseModel
+# wherehouse
+from core.apps.wherehouse.models import WhereHouse, Inventory
+# projects 
+from core.apps.projects.models import ProjectFolder, EstimateWork
+# accounts
+from core.apps.accounts.models import User
+
+
+class InvalidProduct(BaseModel):
+    STATUS = (
+        ('BROKEN', 'singan'),
+        ('LOST', 'yoqolgan'),
+        ('OTHER', 'boshqa'),
+    )
+
+    # relationship
+    inventory = models.ForeignKey(Inventory, on_delete=models.CASCADE, related_name='invalid_products')
+    project_folder = models.ForeignKey(
+        ProjectFolder, on_delete=models.CASCADE, related_name='invalid_products'
+    )
+    witnesses = models.ManyToManyField(User, related_name='invalid_products')
+    work = models.ForeignKey(
+        EstimateWork, on_delete=models.SET_NULL, null=True, blank=True, related_name='invalid_products'
+    )
+    # required
+    amount = models.PositiveIntegerField()
+    status = models.CharField(max_length=20, choices=STATUS, default='other')
+    # optional
+    created_date = models.DateField(null=True, blank=True)
+    expiry_date = models.DateField(null=True, blank=True)
+    comment = models.DateField(null=True, blank=True)
+    file = models.FileField(null=True, blank=True, upload_to='invalid_product/files/')
+
+    def __str__(self):
+        return f'{self.amount} ta maxsulot yaroqsiz'
+    
+    class Meta:
+        verbose_name = 'yaroqsiz maxsulot'
+        verbose_name_plural = 'yaroqsiz maxsulotlar'

core/apps/wherehouse/models/inventory.py

@@ -26,6 +26,7 @@ class Inventory(BaseModel):
         Project, on_delete=models.SET_NULL, null=True, blank=True,
         related_name='inventories'
     )
+    is_invalid = models.BooleanField(default=False)
 
     def __str__(self):
         return f'{self.product} in {self.wherehouse}'