modified: web/blueprints/group_admin.py

modified:   web/templates/group_admin/database.html

web/blueprints/group_admin.py

@@ -132,6 +132,8 @@ def database():
     has_db   = db.has_db_configured(group_id)
     error    = None
 
+    creds = db.get_group_db_creds(group_id)
+
     if request.method == "POST":
         host     = request.form.get("host", "").strip()
         port     = request.form.get("port", "3306").strip()
@@ -139,26 +141,31 @@ def database():
         password = request.form.get("password", "")
         database_name = request.form.get("database", "").strip()
 
+        # If password left blank and creds already exist, keep the stored password
+        if not password and creds:
+            password = creds["password"]
+
         if not all([host, port, user, database_name]):
             error = "Host, Port, User and Database name are required."
+        elif not password:
+            error = "Password is required."
         else:
             try:
-                # Verbindung testen
                 import pymysql
-                test = pymysql.connect(
+                test_conn = pymysql.connect(
                     host=host, port=int(port), user=user,
                     password=password, database=database_name,
                     connect_timeout=5
                 )
-                test.close()
+                test_conn.close()
                 db.set_group_db_creds(group_id, host, int(port), user, password, database_name)
                 flash("Database connection saved and tested ✓", "success")
                 return redirect(url_for("group_admin.database"))
             except Exception as e:
-                error = f"Verbindungstest fehlgeschlagen: {e}"
+                error = f"Connection test failed: {e}"
 
     return render_template("group_admin/database.html",
-        group=group, has_db=has_db, error=error)
+        group=group, has_db=has_db, creds=creds, error=error)
 
 
 @group_admin.route("/database/delete", methods=["POST"])