changes to the student Name Processing

Web/app.py

@@ -4498,17 +4498,25 @@ def api_item_detail(item_id):
         else:
             status_label = 'Verfügbar'
 
+        # Helper function to get borrower display name
+        def get_borrower_name(user_raw):
+            if not user_raw:
+                return ''
+            try:
+                user_doc = student_cards_col.find_one({'_id': ObjectId(user_raw)})
+                if user_doc:
+                    if user_doc.get('SchülerName'):
+                        return decrypt_text(str(user_doc.get('SchülerName', '')))
+                    return str(user_doc.get('AusweisId', ''))
+            except Exception:
+                pass
+            return str(user_raw)
+
         # Prefer the most recent active borrower across the group
         borrower_value = ''
         for rec in borrow_records:
             if rec.get('Status') == 'active' and rec.get('User'):
-                try:
-                    user_raw = rec.get('User')
-                    user_doc = student_cards_col.find_one({'_id': ObjectId(user_raw)}) if user_raw else None
-                    if user_doc:
-                        borrower_value = decrypt_text(str(user_doc.get('SchülerName', ''))) if user_doc.get('SchülerName') else str(user_doc.get('AusweisId', ''))
-                except Exception:
-                    borrower_value = str(rec.get('User', ''))
+                borrower_value = get_borrower_name(rec.get('User'))
                 break
         
         if not borrower_value and item.get('User'):
@@ -4531,19 +4539,13 @@ def api_item_detail(item_id):
             rows = []
             
             for rec in borrow_records[:3]:
-                try:
-                    user_raw = rec.get('User')
-                    user = student_cards_col.find_one({'_id': ObjectId(user_raw)}) if user_raw else None
-                    if user:
-                        borrower_value = decrypt_text(str(user.get('SchülerName', ''))) if user.get('SchülerName') else str(user.get('AusweisId', ''))
-                except Exception:
-                    borrower_value = str(rec.get('User', ''))
+                rec_borrower_name = get_borrower_name(rec.get('User')) or '-'
                 status = rec.get('Status', '')
                 start = fmt_dt(rec.get('Start'))
                 end = fmt_dt(rec.get('End'))
                 notes = html.escape(str(rec.get('Notes') or ''))
                 rows.append(
-                    f"<li><strong>{html.escape(str(user or '-'))}</strong> — "
+                    f"<li><strong>{html.escape(rec_borrower_name)}</strong> — "
                     f"{html.escape(str(status))} — "
                     f"{html.escape(str(start))} → {html.escape(str(end))}"
                     f"{(' — ' + notes) if notes else ''}</li>"