fix user name resolution

modules/routes/routeBilling.py

@@ -1320,6 +1320,31 @@ def getUsersForMandate(
         raise HTTPException(status_code=500, detail=str(e))
 
 
+def _attachCreatedByUserNamesToTransactionRows(rows: List[Dict[str, Any]]) -> None:
+    """Resolve createdByUserId to userName using root app interface (sysadmin transaction views)."""
+    try:
+        from modules.interfaces.interfaceDbApp import getRootInterface
+
+        appRoot = getRootInterface()
+        userNames: Dict[str, str] = {}
+        for row in rows:
+            uid = row.get("createdByUserId")
+            if not uid:
+                row["userName"] = ""
+                continue
+            if uid not in userNames:
+                try:
+                    u = appRoot.getUser(uid)
+                    userNames[uid] = u.username if u else uid[:8]
+                except Exception:
+                    userNames[uid] = uid[:8]
+            row["userName"] = userNames.get(uid, "")
+    except Exception:
+        for row in rows:
+            uid = row.get("createdByUserId")
+            row["userName"] = uid[:8] if uid else ""
+
+
 def _enrichTransactionRows(transactions) -> List[Dict[str, Any]]:
     """Convert raw transaction dicts to enriched TransactionResponse rows with resolved usernames."""
     result = []
@@ -1341,23 +1366,7 @@ def _enrichTransactionRows(transactions) -> List[Dict[str, Any]]:
         )
         result.append(row.model_dump())
 
-    try:
-        from modules.interfaces.interfaceDbUam import _getRootInterface as getUamRoot
-        uamInterface = getUamRoot()
-        userNames: Dict[str, str] = {}
-        for row in result:
-            uid = row.get("createdByUserId")
-            if uid and uid not in userNames:
-                try:
-                    user = uamInterface.getUser(uid)
-                    userNames[uid] = user.get("username", uid[:8]) if user else uid[:8]
-                except Exception:
-                    userNames[uid] = uid[:8]
-            row["userName"] = userNames.get(uid, "") if uid else ""
-    except Exception:
-        for row in result:
-            row["userName"] = row.get("createdByUserId", "")[:8] if row.get("createdByUserId") else ""
-
+    _attachCreatedByUserNamesToTransactionRows(result)
     return result
 
 
@@ -1385,24 +1394,7 @@ def _buildTransactionsList(ctx: RequestContext, targetMandateId: str) -> List[Di
         )
         result.append(row.model_dump())
 
-    # Resolve user names
-    try:
-        from modules.interfaces.interfaceDbUam import _getRootInterface as getUamRoot
-        uamInterface = getUamRoot()
-        userNames: Dict[str, str] = {}
-        for row in result:
-            uid = row.get("createdByUserId")
-            if uid and uid not in userNames:
-                try:
-                    user = uamInterface.getUser(uid)
-                    userNames[uid] = user.get("username", uid[:8]) if user else uid[:8]
-                except Exception:
-                    userNames[uid] = uid[:8]
-            row["userName"] = userNames.get(uid, "") if uid else ""
-    except Exception:
-        for row in result:
-            row["userName"] = row.get("createdByUserId", "")[:8] if row.get("createdByUserId") else ""
-
+    _attachCreatedByUserNamesToTransactionRows(result)
     return result