在Laravel中显示来自两个表的数据

// User模型
class User extends Model
{
    public function profile()
    {
        return $this->hasOne(Profile::class);
    }
}

// Profile模型
class Profile extends Model
{
    public function user()
    {
        return $this->belongsTo(User::class);
    }
}

// Article模型
class Article extends Model
{
    public function comments()
    {
        return $this->hasMany(Comment::class);
    }
}

// Comment模型
class Comment extends Model
{
    public function article()
    {
        return $this->belongsTo(Article::class);
    }
}

// User模型
class User extends Model
{
    public function roles()
    {
        return $this->belongsToMany(Role::class);
    }
}

// Role模型
class Role extends Model
{
    public function users()
    {
        return $this->belongsToMany(User::class);
    }
}

$article = Article::find(1);
$comments = $article->comments;