与 Laravel 的多对多关系

Many to Many relationship with Laravel

我有以下 tables:

Posts {id, title, description}

标签{id, name, description}

post_tags {post_id, tag_id}

在Laravel中我建立了如下关系。我不确定如何查询我的 post_tags 数据透视表 table。我收到以下错误:

SQLSTATE[42S02]: Base table or view not found: 1146 Table 'dev_match.post_tag' doesn't exist (SQL: select `tags`.*, `post_tag`.`post_id` as `pivot_post_id`, `post_tag`.`tag_id` as `pivot_tag_id` from `tags` inner join `post_tag` on `tags`.`id` = `post_tag`.`tag_id` where `post_tag`.`post_id` = 1)

家庭控制器:

  public function getindex(){


          $post = Post::all();
         return view('welcome', compact('post'));

       }

主视图:

@foreach($post as $posts)

    <tbody>
        <tr>
        <td> <a href="">{{$posts->tags->name}}</a> </td>
        <td>  </td>
        <td> asked </td>
      </tr>
    </tbody>


    @endforeach

标签模型:

  public function post()
{
   return $this->belongsToMany('App\Post');
}

Post 型号:

    public function tag()
 {
     return $this->belongsToMany('App\Tag');
 }

您不需要为枢轴添加模型 table(但您可以),而且您不需要为枢轴添加模型 id table.

你的关系没问题,但如果你想使用id,你应该在关系

中添加withPivot('id')
public function post()
{
    return $this->belongsToMany('App\Post')->withPivot('id');
}