Add logging: log vCard export errors to logs/app.log and console; update .gitignore

.gitignore

@@ -16,7 +16,10 @@ __pycache__/
 .DS_Store
 
 # vCards
-vcards
+vcards/
+
+# Logs
+logs/
 
 #
 anmeldung.sqbpro

app.py

@@ -3,6 +3,8 @@ from flask_sqlalchemy import SQLAlchemy
 import os
 import re
 from utils import generate_vcard
+import logging
+from logging.handlers import RotatingFileHandler
 
 BASE_DIR = os.path.dirname(os.path.abspath(__file__))
 DB_PATH = os.path.join(BASE_DIR, 'anmeldung.db')
@@ -13,6 +15,18 @@ app.config['SQLALCHEMY_TRACK_MODIFICATIONS'] = False
 
 db = SQLAlchemy(app)
 
+# --- logging setup -------------------------------------------------
+LOG_DIR = os.path.join(BASE_DIR, 'logs')
+os.makedirs(LOG_DIR, exist_ok=True)
+log_file = os.path.join(LOG_DIR, 'app.log')
+handler = RotatingFileHandler(log_file, maxBytes=5 * 1024 * 1024, backupCount=3)
+formatter = logging.Formatter('%(asctime)s %(levelname)s %(name)s: %(message)s')
+handler.setFormatter(formatter)
+handler.setLevel(logging.INFO)
+app.logger.addHandler(handler)
+app.logger.setLevel(logging.INFO)
+# --------------------------------------------------------------------
+
 
 class Adresse(db.Model):
     id = db.Column(db.Integer, primary_key=True)
@@ -100,9 +114,9 @@ def index():
             # determine base dir: prefer app.config, then app attribute, then module BASE_DIR
             base_dir = app.config.get('BASE_DIR') if app.config.get('BASE_DIR') else getattr(app, 'BASE_DIR', BASE_DIR)
             generate_vcard(adresse, base_dir)
-        except Exception:
+        except Exception as e:
-            # nicht kritisch: bei Fehlern nicht die ganze Anfrage abbrechen
+            # Log the exception with stack trace but don't abort the request
-            pass
+            app.logger.exception('Fehler beim Erzeugen der vCard for adresse id=%s: %s', adresse.id if hasattr(adresse, 'id') else 'unknown', e)
 
         # Nach erfolgreichem Speichern weiterleiten
         return redirect(url_for('danke', id=adresse.id))