php - 如何从关系中检索数据？

Question

发布模型

class Post extends Model
{


    public function comments()
    {
        return $this->hasMany('App\Comment');
    }

    public function users()
    {
        return $this->belongsTo('App\User');
    }

评论模型

class Comment extends Model
    {

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


   }  

用户模型

class User extends Model
{


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

现在我的问题是如何访问属于带有评论用户名的帖子的所有评论 预先感谢您

Answer 1

试试这个，它将返回所选用户的所有带有评论的帖子以及带有作者的帖子。

$data = User::with('post.comment') 
        -> with('post.author') 
        -> Where('id',$user_id) 
        -> first();

这将获取作者的帖子以及发表评论的用户的评论。 假设您的模型是这样设置的，

Post belongs to an Author,   
Author has many Post,  
Post has many Comment  
Comment belongs to a Post  
Comment belongs to a User  
User has many Comment.   

$posts = Post::with('author') -> with('comment.user') -> get();