数据库：common_user
id
name
admin_id数据库：common_adminid
name
rule参照模型：usernamespace app\common\model;
use think\Model;
class User extends Model
{
protected $name = 'common_user';
public function admin()
{
return $this->belongsTo('Admin');
}
}关联模型：adminnamespace app\common\model;
use think\Model;
class Admin extends Model
{
protected $name = 'common_admin';
}使用模型：$user = model('common/User');
$user_data = $user->with('admin')->find(1);
dump($user_data->admin); //输出null 最佳答案
