$form->select('type')
...
->when(10, function (Form\NestedForm $form) {
$form->selectTable('approvers')
->dialogWidth('50%')
->from(UserTable::make(['company_id' => $this->company->id]));
})
->when(20, function (Form\NestedForm $form) {
$form->multipleSelectTable('approvers')
->dialogWidth('50%')
->from(UserTable::make(['company_id' => $this->company->id]));
})
满足第一个条件时单选没有问题,满足第二个条件时仍然只能单选
调换顺序之后两个都可以多选