多态关系正在一个且只有一个模型上大写

Question

我有这个奇怪的问题，在我的一个模型中，多态关系的关系名称被大写，并且它不在任何其他模型上。罪魁祸首是Like模型。

class Like extends Model
{
    public function likeable()
    {
        return $this->morphTo();
    }
}

class Comment extends Model
{
    public function commentable()
    {
        return $this->morphTo();
    }
}

当我记录模型的值时，我得到Like的大写属性和Comment的小写。

[2016-04-12 13:24:22] local.INFO: {"user_id":1,"Likeable_type":"App\\Entities\\Post","Likeable_id":64,"updated_at":"2016-04-12 13:24:22","created_at":"2016-04-12 13:24:22","id":170}  
[2016-04-12 13:24:26] local.INFO: {"user_id":1,"company_id":1,"body":"testing 123","commentable_type":"App\\Entities\\Post","commentable_id":64,"updated_at":"2016-04-12 13:24:26","created_at":"2016-04-12 13:24:26","id":4,"created_at_diff_for_humans":"1 second ago"}