A关联B,B关联C
写了一个User视图模型，如下：
namespace Home\Model;
use Think\Model\ViewModel;
class UserViewModel extends ViewModel {
public $viewFields=array(
'User'=>array('id','name'),
'Group_user'=>array('group_id','user_id','_on'=>'Group_user.user_id=User.id'), 'Group'=>array('name'=>'groupname','_on'=>'Group.id=Group_user.group_id')
);
}结果报SQL语法错误。SQLSTATE[42000]: Syntax error or access violation: 1064 You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'Group ON Group.id=Group_user.group_id WHERE User.is_del = 0' at line 1我用原生的SQL：select * from user as a,group_user as b ,group as c where a.id=b.user_id and b.group_id = c.id;没有任何问题，请问View视图的关联，怎样处理三表间的对应关系？ 最佳答案
