small changes

inventory/models.py

@@ -1242,6 +1242,9 @@ class Dealer(models.Model, LocalizedNameMixin):
             return None
 
     @property
+    def customers(self):
+        return models.Customer.objects.filter(dealer=self)
+    @property
     def user_quota(self):
         try:
             quota_dict = get_user_quota(self.user)
@@ -2304,7 +2307,7 @@ class Opportunity(models.Model):
             opportinity_for = self.organization.name
 
         if not self.slug:
-            base_slug = slugify(self.name)
+            base_slug = slugify(f"opportinity {opportinity_for}")
             self.slug = base_slug
             counter = 1