Laravel -在belongsToMany RelationShips上使用inRandomOrder()

Question

在此代码中，如下所示：

$latestHerbsInformation = \App\ContentCategories::find('14')->contents->take(5);

我想使用inRandomOrder()从内容中获取随机行，Contents和ContentCategories是belongsToMany RelationShips，代码如下：

$latestHerbsInformation = \App\ContentCategories::find('14')->contents->inRandomOrder()->take(5);

别为我工作。

Contents型号：

class Contents extends Model
{
    use Sluggable;
    protected $table = 'contents';
    protected $guarded = ['id'];

    public function categories()
    {
        return $this->belongsToMany(ContentCategories::class);
    }
}

ContentCategories型号：

class ContentCategories extends Model
{
    protected $table = 'contents_categories';
    protected $guarded = ['id'];

    public function contents()
    {
        return $this->belongsToMany(Contents::class);
    }
}

我得到了这个错误：

Method inRandomOrder does not exist. 

我该如何解决这个问题？提前感谢

Answer 1

正确的查询是：

\App\ContentCategories::find('14')->contents()->inRandomOrder()->take(5)->get();

因为这将执行查询并返回一个集合：

\App\ContentCategories::find('14')->contents