Laravel Eloquent：通过 toArraytoJson 序列化时如何自动获取关系

发布于02月06日

我想，当我将对象序列化为JSON时，自动获取user和replies是可行的，但是重写toArray真的是正确的方法吗？

<?php

class Post extends Eloquent
{
    protected $table = 'posts';
    protected $fillable = array('parent_post_id', 'user_id', 'subject', 'body');

    public function user()
    {
        return $this->belongsTo('User');
    }

    public function replies()
    {
        return $this->hasMany('Post', 'parent_post_id', 'id');
    }

    public function toArray()
    {
        $this->load('user', 'replies');
        return parent::toArray();
    }
}

推荐答案

Instead of overriding toArray() to load user and replies, use $with.

下面是一个例子:

<?php

class Post extends Eloquent
{
    protected $table = 'posts';
    protected $fillable = array('parent_post_id', 'user_id', 'subject', 'body');

    protected $with = array('user', 'replies');


    public function user()
    {
        return $this->belongsTo('User');
    }

    public function replies()
    {
        return $this->hasMany('Post', 'parent_post_id', 'id');
    }

}

Also, you should be using toArray() in your controllers, not your models, like so: