对控制器中 laravel 未检测到的方法进行建模.也许是路由问题

由于我缺乏 Laravel 的经验，我很难理解为什么我可以获取 Post 模型变量，但是当我尝试调用其方法时会抛出错误。我不知道这是否是路由问题。这是基于来自Laravel启动站点的Laravel引导程序启动站点以下错误和注册用户控制器如下。

Call to undefined method stdClass::url()

$posts = DB::table('posts')->join('registered_posts' , 'posts.id' , '=' , 'registered_posts.post_id')->get();

        foreach($posts as &$post){
            echo $post->id; //works fine
            echo $post->url(); //breaks
            echo '<br>';
        }

这是帖子模型

<?php
use Illuminate'Support'Facades'URL;
class Post extends Eloquent {
    /**
     * Deletes a blog post and all
     * the associated comments.
     *
     * @return bool
     */
 protected $fillable = array('registered_post');
    public function delete()
    {
        // Delete the comments
        $this->comments()->delete();
        // Delete the blog post
        return parent::delete();
    }
    public function registered_post(){
        return $this->registered_post;
    }
    /**
     * Returns a formatted post content entry,
     * this ensures that line breaks are returned.
     *
     * @return string
     */
    public function content()
    {
        return $this->content;
    }
    /**
     * Get the post's author.
     *
     * @return User
     */
    public function author()
    {
        return $this->belongsTo('User', 'user_id');
    }
    /**
     * Get the post's meta_description.
     *
     * @return string
     */
    public function meta_description()
    {
        return $this->meta_description;
    }
    /**
     * Get the post's meta_keywords.
     *
     * @return string
     */
    public function meta_keywords()
    {
        return $this->meta_keywords;
    }
    /**
     * Get the post's comments.
     *
     * @return array
     */
    public function comments()
    {
        return $this->hasMany('Comment');
    }
    /**
     * Get the date the post was created.
     *
     * @param 'Carbon|null $date
     * @return string
     */
    public function date($date=null)
    {
        if(is_null($date)) {
            $date = $this->created_at;
        }
        return String::date($date);
    }
    /**
     * Get the URL to the post.
     *
     * @return string
     */
    public function url()
    {
        return Url::to($this->slug);
    }
    /**
     * Returns the date of the blog post creation,
     * on a good and more readable format :)
     *
     * @return string
     */
    public function created_at()
    {
        return $this->date($this->created_at);
    }
    /**
     * Returns the date of the blog post last update,
     * on a good and more readable format :)
     *
     * @return string
     */
    public function updated_at()
    {
        return $this->date($this->updated_at);
    }
}

这也是我正在使用的路线

Route::group(array('prefix' => 'registered', 'before' => 'auth'), function()
{

    # Admin Dashboard
    Route::post('registered', 'RegisteredUserController@getIndex');
    Route::controller('/', 'RegisteredUserController');
});

提前谢谢你！