Laravel 中的可扩展模型

Question

我正在尝试以这样一种方式构建我的模型，即始终有一个 baseUser 具有每个用户需要的基本功能。

然后在环境 a) 中，我可能想以不同于环境 b) 的方式扩展此用户。

我的基类：

<?php
namespace App\Libraries;

use Illuminate\Database\Eloquent\Model;

abstract class basicUser extends model
{
    protected $table = 'users';

    /**
     * The attributes that are mass assignable.
     *
     * @var array
     */
    protected $fillable = array('name', 'email');

    /**
     * The attributes excluded from the model's JSON form.
     *
     * @var array
     */
    protected $hidden = array('remember_token', 'password');

    /**
     * The attributes excluded from the model's JSON form.
     *
     * @var array
     */
    protected $guarded = array();

    public function ratings()
    {
        return $this->hasMany('\App\Rating');
    }


    /*==========  Override class variable declarations for children.  ==========*/

    protected function setFillableAttribute($value)
    {
        if (count(class_parents($this)) > 1) # Check if there is more than one parent, they all need the Eloquent model.
        {
            # Yes, there are parents. We need to combine the parent $fillable with the extra ones in the child.
            $this->fillable = array_unique(array_merge($this->fillable,$value));
        }
        else
        {
            # No parents except Eloquent model.
            $this->fillable = $value;
        }
    }

    protected function setHiddenAttribute($value)
    {
        if (count(class_parents($this)) > 1) # Check if there is more than one parent, they all need the Eloquent model.
        {
            # Yes, there are parents. We need to combine the parent $hidden with the extra ones in the child.
            $this->hidden = array_unique(array_merge($this->hidden,$value));
        }
        else
        {
            # No parents except Eloquent model.
            $this->hidden = $value;
        }
    }

    protected function setGuardedAttribute($value)
    {
        if (count(class_parents($this)) > 1) # Check if there is more than one parent, they all need the Eloquent model.
        {
            # Yes, there are parents. We need to combine the parent $guarded with the extra ones in the child.
            $this->guarded = array_unique(array_merge($this->guarded,$value));
        }
        else
        {
            # No parents except Eloquent model.
            $this->guarded = $value;
        }
    }
}

我的基类中的 set...Attribute() 方法背后的想法是，如果孩子想要添加到 $fillable、$hidden 或 $guarded，则不会重置父值。

<?php
namespace App\Libraries;

use App\Libraries\basicUser;

class User extends  basicUser
{
    protected $fillable = array('extra');

    protected $hidden = array(); 

    protected $guarded = array();
}

现在我真正想要的是让我的$u = user::find(1); 拥有密码和remember_token 被隐藏......但受保护的$hidden 似乎被覆盖了。

这种结构甚至可能吗？我是否以错误的方式接近它？

Answer 1

$hidden 被覆盖，因为您在子类中重新声明了此属性。从 User 类中删除以下内容，它应该足以使其工作：

protected $hidden = array();