rss mention fix attempt; SITE_NAME is now required

app/lib/babycode.py

@@ -196,13 +196,12 @@ class RSSXMLRenderer(BabycodeRenderer):
 
     def make_mention(self, e):
         from ..models import Users
-        from flask import url_for, current_app
-        with current_app.test_request_context('/'):
-            target_user = Users.find({'username': e['name'].lower()})
-            if not target_user:
-                return f"@{e['name']}"
+        from flask import url_for
+        target_user = Users.find({'username': e['name'].lower()})
+        if not target_user:
+            return f"@{e['name']}"
 
-            return f'<a href="{url_for('users.page', username=target_user.username, _external=True)}" title="@{target_user.username}">{target_user.get_readable_name()}</a>'
+        return f'<a href="{url_for('users.page', username=target_user.username, _external=True)}" title="@{target_user.username}">{'@' if not target_user.has_display_name() else ''}{target_user.get_readable_name()}</a>'
 
 
 NAMED_COLORS = [

app/lib/exceptions.py

@@ -0,0 +1,9 @@
+class MissingConfigurationException(Exception):
+    def __init__(self, configuration_field: str):
+        message = f"Missing configuration field '{configuration_field}'"
+        super().__init__(message)
+
+
+class SiteNameMissingException(MissingConfigurationException):
+    def __init__(self):
+        super().__init__('SITE_NAME')