fix of the template name

Web/modules/database/items.py

@@ -27,6 +27,19 @@ from Web.modules.database.settings import MongoClient
 import Web.modules.inventarsystem.data_protection as dp
 
 
+def is_library_item(item):
+    """
+    Determines if an item belongs to the library system.
+    Returns False for 'other', None, or empty ItemType (Inventory item).
+    Returns True for any specific library type ('Buch', 'CD', 'DVD', etc.).
+    """
+    if not item:
+        return False
+    item_type = item.get('ItemType', 'other')
+    if not item_type:
+        return False
+    return str(item_type).strip().lower() != 'other'
+
 def safe_decrypt_user(encrypted_user):
     """
     Safely decrypt an encrypted username string.