我试图在新用户的注册上添加验证约束,我希望两个字段的组合在数据库中是唯一的。我得到的错误来自数据库,说我有完整性约束违规。我所拥有的表称为用户,我想要具有唯一组合的字段称为ssn和lastfour。
我添加了行$ table-> unique(array('ssn','lastfour'));在用户迁移中,我还在注册中添加了一些工作正常且数据库正常的字段。我在9个月前Laravel unique validation on multiple columns发布的类似问题中尝试了该解决方案,但我得到了未定义的变量“Rule :: unique('servers') - > where(function($ query)use($ ssn,$ lastfour)”
protected function validator(array $data)
{
return Validator::make($data, [
'name' => ['required', 'string', 'max:255'],
'lastname' => ['required', 'string', 'max:255'],
'username' => ['required', 'string', 'max:255', 'unique:users'],
'ssn' => ['required', 'string', 'regex:/^[0-9]*$/','max:8', 'min:8'],
'lastfour' => ['required', 'string', 'regex:/^[0-9]*$/','max:4', 'min:4'],
'email' => ['required', 'string', 'email', 'max:255', 'unique:users'],
'password' => ['required', 'string', 'min:6', 'confirmed'],
]);
}
我尝试了以下代码
'lastfour' => ['required', 'string', 'regex:/^[0-9]*$/','max:4', 'min:4',
Rule::unique('users')->where(function ($query) use
($ssn, $lastfour){
return $query->where('ssn', $ssn)
->where('lastfour', $lastfour);
})
],
$ssn
和$lastfour
似乎没有在任何地方定义。您可以尝试以下方式:
protected function validator(array $data)
{
$uniqueRule = Rule::unique('users')->where(function ($query) use
($data){
return $query->where('ssn', $data['ssn']??'')
->where('lastfour', $data['lastfour']??'');
});
return Validator::make($data, [
'name' => ['required', 'string', 'max:255'],
'lastname' => ['required', 'string', 'max:255'],
'username' => ['required', 'string', 'max:255', 'unique:users'],
'ssn' => ['required', 'string', 'regex:/^[0-9]*$/','max:8', 'min:8', $uniqueRule ],
'lastfour' => ['required', 'string', 'regex:/^[0-9]*$/','max:4', 'min:4'],
'email' => ['required', 'string', 'email', 'max:255', 'unique:users'],
'password' => ['required', 'string', 'min:6', 'confirmed'],
]);
}