修改了座位等级中文问题、空订单问题

Project/Service/func/book.py

@@ -35,6 +35,10 @@ def book():
                 passenger[key] = request.form.get(f'passengers[{i}][{key}]')
             passengers.append(passenger)
 
+        if not passengers:
+            flash("请至少添加一位乘客", "error")
+            return redirect(url_for('index'))
+
         conn = pymysql.connect(**db)
         cursor = conn.cursor()
         
@@ -85,7 +89,7 @@ def book():
             conn.rollback()
             print(e)
             flash("订票失败", "error")
-            return redirect(url_for('search'))
+            return redirect(url_for('index'))
         
         finally:
             cursor.close()