diff --git a/backend/product/models.py b/backend/product/models.py
index 1a1ca6b..f044d5a 100644
--- a/backend/product/models.py
+++ b/backend/product/models.py
@@ -4,6 +4,7 @@ from account.models import User
 from django.urls import reverse
 import requests
 from django.utils.translation import gettext_lazy as _
+from django.core.exceptions import ValidationError
 
 class MainCategoryModel(models.Model):
     name = models.CharField(max_length=50, verbose_name='نام دسته بندی')
@@ -218,8 +219,8 @@ class ProductDetailModel(models.Model):
     class Meta:
         verbose_name = 'جزیات محصول'
         verbose_name_plural = 'جزیات محصول ها'
-    # def __str__(self):
-    #     return f'جزيیات محصول {self.product}'
+    def __str__(self):
+        return f'جزيیات محصول {self.detail_category.title} - {self.detail.title}'
 
 class ProductVariant(models.Model):
     product = models.ForeignKey(ProductModel, on_delete=models.CASCADE, related_name='variants', verbose_name='محصول')
@@ -272,21 +273,3 @@ class ProductVariant(models.Model):
     def save(self, *args, **kwargs):
         self.set_or_update_price()
         super().save(*args, **kwargs)
-
-    def get_toman_price_after_discount(self):
-        return self.price * ((100 - self.discount) / 100)
-    
-    @classmethod
-    def update_all_prices(cls):
-        print('calling the update all prices ')
-        dollor_object, _ = DollorModel.objects.get_or_create(unique_filed='unique')
-        print(dollor_object.price)
-        dollor_object.update_price()
-        dollor_object.save()
-        dollor_price = dollor_object.price
-        print(dollor_object.price)
-        print('classmethod dollor price update ')
-        products = cls.objects.all()
-        for product in products:
-            product.set_or_update_price(dollor_price=dollor_price)
-            product.save()
\ No newline at end of file