From ccfafd9c5f629d0353eee2963320b0f72dd11df0 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E5=92=95=E8=B0=B7=E9=85=B1?=
 <74496778+GooGuJiang@users.noreply.github.com>
Date: Sun, 24 Aug 2025 21:45:07 +0800
Subject: [PATCH] Add fallback for user avatar URL in notifications

Ensures that a default avatar URL is used if the user object lacks an avatar_url attribute or if an exception occurs, improving robustness of notification cover images.
---
 app/models/notification.py | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/app/models/notification.py b/app/models/notification.py
index dbfcaa3..dd7aaa9 100644
--- a/app/models/notification.py
+++ b/app/models/notification.py
@@ -117,10 +117,14 @@ class ChannelMessageBase(NotificationDetail):
         receiver: list[int],
         channel_type: "ChannelType",
     ) -> Self:
+        try:
+            avatar_url = getattr(user, 'avatar_url', 'https://lazer-data.g0v0.top/default.jpg') or 'https://lazer-data.g0v0.top/default.jpg'
+        except Exception:
+            avatar_url = 'https://lazer-data.g0v0.top/default.jpg'
         instance = cls(
             title=truncate(message.content, CONTENT_TRUNCATE),
             type=channel_type.value.lower(),
-            cover_url=user.avatar_url,
+            cover_url=avatar_url,
         )
         instance._message = message
         instance._user = user