php - Laravel 4，如何防止 Eloquent 模型处理某些属性？

Question

class User extends Eloquent {

    protected $table = 'my_users';

    // The 'my_users' table does *not* provide this column.
    protected $computedValue;

    public function doSomething() {
        // Anyway, for some reason, i need the property to exist in the model.
        $this->computedValue = 'foo';
    }
}

当我这样做时User::save() ，会触发错误，因为 Eloquent 正在尝试 insert into my_users (computedValue) values('foo')

实际上，我在触发保存之前取消设置属性。是否有其他方法(除了监听保存事件以取消设置之外)，例如

protected $discard = array('computedValue', 'anyOtherFieldNotToMap');

？

Answer 1

您可以尝试为该成员变量指定默认值。

protected $computedValue = false;

引用 Laravel 论坛 Setting transient properties on Eloquent models without saving to database?

似乎对那张海报有用。