Raises validation error if file path and root are not unique

netbox/extras/models/scripts.py

@@ -2,6 +2,7 @@
 import logging
 from functools import cached_property
 
+from django.core.exceptions import ValidationError
 from django.db import models
 from django.urls import reverse
 from django.utils.translation import gettext_lazy as _
@@ -76,6 +77,14 @@ def _get_name(cls):
 
         return scripts
 
+    def clean(self):
+        super().clean()
+
+        # Ensure that the file root and path make a unique pair
+        if self.file_root and self.file_path:
+            if ScriptModule.objects.filter(file_root=self.file_root, file_path=self.file_path).exclude(pk=self.pk).exists():
+                raise ValidationError(f"A script module with this file path already exists ({self.file_root}/{self.file_path}).")
+
     def save(self, *args, **kwargs):
         self.file_root = ManagedFileRootPathChoices.SCRIPTS
         return super().save(*args, **kwargs)