From e71c11c43249d27ced8df530eb9810d3114c2256 Mon Sep 17 00:00:00 2001
From: Floke <floke.com@gmail.com>
Date: Thu, 28 Aug 2025 17:57:44 +0000
Subject: [PATCH] sync_manager.py aktualisiert

---
 sync_manager.py | 24 ++++++++++--------------
 1 file changed, 10 insertions(+), 14 deletions(-)

diff --git a/sync_manager.py b/sync_manager.py
index c1034465..3abcc4a1 100644
--- a/sync_manager.py
+++ b/sync_manager.py
@@ -86,11 +86,11 @@ class SyncManager:
         """Lädt und bereitet die Daten aus D365 und Google Sheets vor."""
         self.logger.info(f"Lade Daten aus D365-Export: '{self.d365_export_path}'...")
         try:
-            self.d365_df = pd.read_excel(self.d365_export_path, dtype=str).fillna('')
+            temp_d365_df = pd.read_excel(self.d365_export_path, dtype=str).fillna('')
             for d365_col in self.d365_to_gsheet_map.keys():
-                if d365_col not in self.d365_df.columns:
+                if d365_col not in temp_d365_df.columns:
                     raise ValueError(f"Erwartete Spalte '{d365_col}' nicht in der D365-Exportdatei gefunden.")
-            self.d365_df = self.d365_df[list(self.d365_to_gsheet_map.keys())].copy()
+            self.d365_df = temp_d365_df[list(self.d365_to_gsheet_map.keys())].copy()
             self.d365_df.rename(columns=self.d365_to_gsheet_map, inplace=True)
             self.d365_df['CRM ID'] = self.d365_df['CRM ID'].str.strip().str.lower()
             self.d365_df = self.d365_df[self.d365_df['CRM ID'].str.match(r'^[0-9a-f]{8}-([0-9a-f]{4}-){3}[0-9a-f]{12}$', na=False)]
@@ -103,25 +103,21 @@ class SyncManager:
             all_data_with_headers = self.sheet_handler.get_all_data_with_headers()
             
             if not all_data_with_headers or len(all_data_with_headers) < self.sheet_handler._header_rows:
-                self.gsheet_df = pd.DataFrame(columns=COLUMN_ORDER)
+                self.gsheet_df = pd.DataFrame(columns=COLUMN_ORDER).fillna('')
             else:
                 actual_header = all_data_with_headers[self.sheet_handler._header_rows - 1]
-                data_rows = all_data_with_headers[self.sheet_handler._header_rows:]
+                data_rows_raw = all_data_with_headers[self.sheet_handler._header_rows:]
                 
-                # --- FINALER DATAFRAME-ERSTELLUNGS-FIX ---
-                temp_df = pd.DataFrame(data_rows, columns=actual_header)
+                # --- HOLZHAMMER-METHODE: JEDE ZELLE ZU STRING KONVERTIEREN ---
+                data_rows_as_string = [[str(cell) for cell in row] for row in data_rows_raw]
+
+                temp_df = pd.DataFrame(data_rows_as_string, columns=actual_header)
                 
-                # Sorge dafür, dass alle Spalten aus unserer Config existieren
                 for col_name in COLUMN_ORDER:
                     if col_name not in temp_df.columns:
                         temp_df[col_name] = ''
                 
-                # Wähle nur die Spalten aus, die wir wollen, in der korrekten Reihenfolge
-                temp_df = temp_df[COLUMN_ORDER]
-
-            # Konvertiere ALLES im DataFrame präventiv zu Strings und fülle leere Zellen
-            self.gsheet_df = temp_df.astype(str).fillna('')
-
+                self.gsheet_df = temp_df[COLUMN_ORDER].fillna('')
         except Exception as e:
             self.logger.critical(f"Fehler beim Laden/Umwandeln der GSheet-Daten: {e}", exc_info=True)
             return False