Flask Admin 使用自定义按钮扩展“选择”下拉菜单

Im using the built-in view of flask admin. As you can see in the picture below:

我尝试的很简单：我只想使用自定义按钮扩展下拉菜单。此按钮应对所有选定的项目执行某些操作。 Flask 是否有内置功能，我可以简单地添加操作按钮？

Use the @action装饰师。下面是简单的示例，文本“重新计算费用”出现在下拉菜单中。

class TransactionView(AdminView):
    
    from flask_admin.actions import action

    @action('recalculate', 'Recalculate Charges', 'Are you sure you want to recalculate selected transactions(s)?')
    def action_recalculate(self, ids):
        count = 0
        for _id in ids:
            # Do some work with the id, e.g. call a service method
            transaction_service.recalculate_transaction(_id)
            count += 1
        flash("{0} transaction (s) charges recalculated".format(count))