u

inventory/forms.py

@@ -599,6 +599,13 @@ class VendorForm(forms.ModelForm):
             "logo",
         ]
 
+        unique_together = (
+            ("dealer", "crn"),
+            ("dealer", "vrn"),
+            ("dealer", "email"),
+            ("dealer", "phone_number"),
+        )
+
 
 class CarColorsForm(forms.ModelForm):
     """

inventory/views.py

@@ -3020,7 +3020,6 @@ class VendorCreateView(
         try:
             form.instance.save()
         except IntegrityError as e:
-            if "UNIQUE constraint" in str(e):
             messages.error(self.request, _("Email already exists"))
             logger.error(e)
             return redirect("vendor_create", dealer_slug=self.kwargs["dealer_slug"])
@@ -3029,7 +3028,6 @@ class VendorCreateView(
             logger.error(e)
             return redirect("vendor_create", dealer_slug=self.kwargs["dealer_slug"])
 
-
         return super().form_valid(form)
 
     def get_success_url(self):