数据表一对一关联问题
<code>class User extends Authenticatable { public function profile() { return $this->hasOne(Profile::class); } }</code>
<code>class Profile extends Model public function user() { return $this->belongsTo(User::class); } }</code>
上面是一张user表和profile表的Model,两张表一对一关系,当用户登录后,可以创建他的profile,然后提交。
可是,第二次访问这个创建profile的表单页,也能提交成功,这哪里是一对一,这不是一对多么!是哪里有错,还是模型中进行一对一关联后,要保证profile只有一条记录,在控制器中还要进行判断?
回复内容:
<code>class User extends Authenticatable { public function profile() { return $this->hasOne(Profile::class); } }</code>
<code>class Profile extends Model public function user() { return $this->belongsTo(User::class); } }</code>
上面是一张user表和profile表的Model,两张表一对一关系,当用户登录后,可以创建他的profile,然后提交。
可是,第二次访问这个创建profile的表单页,也能提交成功,这哪里是一对一,这不是一对多么!是哪里有错,还是模型中进行一对一关联后,要保证profile只有一条记录,在控制器中还要进行判断?
要是能创建多个,那就不是一对一了呗
数据库是人设计的,又不是死的,需求是什么样的就设计成什么样的,如果是一对一,那就不能提交两个,如果能提交多个,那就是一对多
提交后是重新覆盖那一条数据就可以一对一咯。
首先查库看是否在profile已经有 该用户的记录了,如果有则update 更新 否则 insert插入记录
这个是你业务设计的问题,你需要在业务中去控制,如果出现了不符合一对一的情况,可以认为出现了数据不一致。

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