From 7ad4b043439f9195d8f14f7ee41032c1af572419 Mon Sep 17 00:00:00 2001
From: Ronny Bruska <ronny.bruska@checkmk.com>
Date: Fri, 10 Jan 2025 13:42:50 +0100
Subject: [PATCH] Notifications: Fix mandatory documentation URL

Change-Id: I829d125ba1ec03b17b2f238d4e7acd24898166d4
---
 cmk/gui/wato/pages/notifications/quick_setup.py | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/cmk/gui/wato/pages/notifications/quick_setup.py b/cmk/gui/wato/pages/notifications/quick_setup.py
index 798707d80b2..2212e94b9fd 100644
--- a/cmk/gui/wato/pages/notifications/quick_setup.py
+++ b/cmk/gui/wato/pages/notifications/quick_setup.py
@@ -1514,9 +1514,7 @@ def _components() -> Sequence[Widget]:
                             parameter_form=String(
                                 title=Title("Documentation URL"),
                                 field_size=FieldSize.LARGE,
-                                custom_validate=[
-                                    Url(protocols=[UrlProtocol.HTTP, UrlProtocol.HTTPS]),
-                                ],
+                                custom_validate=[_validate_optional_url],
                             ),
                         ),
                     },
@@ -1543,6 +1541,14 @@ def _components() -> Sequence[Widget]:
     )
 
 
+def _validate_optional_url(value: str) -> None:
+    if not value:
+        return
+
+    url_validator_instance = Url(protocols=[UrlProtocol.HTTP, UrlProtocol.HTTPS])
+    url_validator_instance(value)
+
+
 def save_and_test_action(
     all_stages_form_data: ParsedFormData, mode: QuickSetupActionMode, object_id: str | None
 ) -> str: