问题描述
是否可以显示一条消息而不是这个?
An exception occurred while executing 'DELETE FROM plan WHERE id = ?' with params [9]:\n\nsqlSTATE[23000]: Integrity constraint violation: 1451 Cannot delete or update a parent row: a foreign key constraint fails (`api`.`request`,CONSTRAINT `FK_3B978F9FE899029B` FOREIGN KEY (`plan_id`) REFERENCES `plan` (`id`))
我想阻止删除,并显示“您无法删除它,因为它在其他地方使用过”
解决方法
我找到了解决方案
* @UniqueEntity("request")