Initial push to public repo

netbox/utilities/error_handlers.py

@@ -0,0 +1,29 @@
+from django.contrib import messages
+
+
+def handle_protectederror(obj, request, e):
+    """
+    Generate a user-friendly error message in response to a ProtectedError exception.
+    """
+    dependent_objects = e[1]
+    try:
+        dep_class = dependent_objects[0]._meta.verbose_name_plural
+    except IndexError:
+        raise e
+
+    # Handle multiple triggering objects
+    if type(obj) in (list, tuple):
+        messages.error(request, "Unable to delete the requested {}. The following dependent {} were found: {}".format(
+            obj[0]._meta.verbose_name_plural,
+            dep_class,
+            ', '.join([str(o) for o in dependent_objects])
+        ))
+
+    # Handle a single triggering object
+    else:
+        messages.error(request, "Unable to delete {} {}. The following dependent {} were found: {}".format(
+            obj._meta.verbose_name,
+            obj,
+            dep_class,
+            ', '.join([str(o) for o in dependent_objects])
+        ))