问建立多个雄辩的关系&有一个从句

EN

$categories = Category::with(['news', 'news.image'])->all();

<?php
class Category extends Eloquent
{
    protected $table = 'category';

    public function news()
    {
        return $this->hasMany('News');
    }
}

<?php
class News extends Eloquent
{
    protected $table = 'news_main';

    public function category()
    {
        return $this->belongsTo('Category');
    }

    public function image()
    {
        return $this->hasOne('NewsImage');
    }
}

<?php
class NewsImage extends Eloquent
{
    protected $table = 'news_img';

    public function news()
    {
        return $this->belongsTo('News', 'id_news');
    }
}