dpepbjp126917 2019-06-10 14:24
浏览 151

通过laravel迁移添加'on update'和'on delete'外键约束

I am making my table like this...

    Schema::create('matched_merchants', function (Blueprint $table)

Im adding 2 foreign keys both have onUpdate and onDelete constraints but only the update constraint gets added.

If i delete the onUpdate, it will correctly add the onDelete constraint.

I cannot add them separately because i get the error of duplicate key.

I could add them manually with a raw sql statement but if theres a right way to do it id rather do that.

  • 写回答

1条回答 默认 最新

  • douxiaochun4964 2019-06-10 14:49

    For some reason, if you set the columns as nullable(), Laravel sets the foreign keys correctly.

    That said, I can see that causing other problems, so I recommend doing the raw SQL statement.

    本回答被题主选为最佳回答 , 对您是否有帮助呢?



  • ¥15 CST2023安装报错
  • ¥15 需要完整的python代码并解释
  • ¥15 使用diffusionbert生成文字 结果是PAD和UNK怎么办
  • ¥15 有人懂怎么做大模型的客服系统吗?卡住了卡住了
  • ¥20 firefly-rk3399上启动卡住了
  • ¥15 如何删除这个虚拟音频
  • ¥50 hyper默认的default switch
  • ¥15 网站打不开,提示502 Bad Gateway
  • ¥20 基于MATLAB的绝热压缩空气储能系统代码咨询
  • ¥15 R语言建立随机森林模型出现的问题