如何访问许多许多关系层中的所有表数据

我有3张表

1.的文章

2.类别

3. category_post .

My Posts Tables here:

+------------+------------------+------+-----+---------------------+----------------+
| Field      | Type             | Null | Key | Default             | Extra          |
+------------+------------------+------+-----+---------------------+----------------+
| id         | int(10) unsigned | NO   | PRI | NULL                | auto_increment |
| title      | varchar(255)     | NO   |     | NULL                |                |
| slug       | varchar(255)     | NO   |     | NULL                |                |
| reporter   | varchar(255)     | NO   |     | NULL                |                |
| meta       | varchar(255)     | NO   |     | 0                   |                |
| body       | text             | NO   |     | NULL                |                |
| image      | varchar(255)     | NO   |     | 0                   |                |
| top        | tinyint(1)       | NO   |     | 0                   |                |
| post_count | int(11)          | NO   |     | 0                   |                |
| created_at | timestamp        | NO   |     | 0000-00-00 00:00:00 |                |
| updated_at | timestamp        | NO   |     | 0000-00-00 00:00:00 |                |
+------------+------------------+------+-----+---------------------+----------------+

My Categories Table Here:

+---------------+------------------+------+-----+---------------------+----------------+
| Field         | Type             | Null | Key | Default             | Extra          |
+---------------+------------------+------+-----+---------------------+----------------+
| id            | int(10) unsigned | NO   | PRI | NULL                | auto_increment |
| name          | varchar(255)     | NO   |     | NULL                |                |
| category_slug | varchar(255)     | NO   |     | NULL                |                |
| parrent_id    | int(11)          | NO   |     | 0                   |                |
| created_at    | timestamp        | NO   |     | 0000-00-00 00:00:00 |                |
| updated_at    | timestamp        | NO   |     | 0000-00-00 00:00:00 |                |
+---------------+------------------+------+-----+---------------------+----------------+

My category_post table:

+-------------+------------------+------+-----+---------+----------------+
| Field       | Type             | Null | Key | Default | Extra          |
+-------------+------------------+------+-----+---------+----------------+
| id          | int(10) unsigned | NO   | PRI | NULL    | auto_increment |
| category_id | int(10) unsigned | NO   | MUL | NULL    |                |
| post_id     | int(10) unsigned | NO   | MUL | NULL    |                |
+-------------+------------------+------+-----+---------+----------------+

我可以创建多个类别选择的帖子。但是当我想按类别显示帖子时，我无法访问类别表。这意味着，我想查看类别名称与每个帖子。

这是我的模型:

类别模型:

public function posts()
{
    return $this->belongsToMany('Post');
}

In Post Model:

public function categories()
{
    return $this->belongsToMany('Category');
}

My Query Helper function for Post by category:

public static function cat_post($category, $limit, $top)
{
    $posts = Post::whereHas('categories', function($q) use ($category, $top)
        {
            $q->where('name', 'like', $category);
            $q->where('top', 'like', $top);
        })->with('categories')->take($limit)->orderBy('created_at', 'DESC')->get();
    return $posts;
}

我可以查看所有的post数据。但类别名称不是。

My Post Loops:

<?php $headline = Helper::head_post(10, 1); ?>
  @foreach ($headline as $post)
    <li><a href="">{{ $post->title }}</a></li>
  @endforeach

当我尝试这个类别名称不工作时:

  @foreach ($headline as $post)
    <li><a href="">{{ $post->categories->name }}</a></li>
  @endforeach

请帮帮我。