2015-12-11 68 views
2

我是一名mongoDB菜鸟,无法使用Mongoose从MongoDB中的数组中删除团队对象。我的用户收藏看起来像;从MongoDB/MongoDB中的数组中删除一个对象

{ "orders":[], 
    "teams":[ 
     { 
     "teamname":"Team One", 
     "_id":{"$oid":"566a038404ebcdc344c5136c"}, 
     "members":[ 
      { 
       "firstname":"Member ", 
       "lastname":"Three",`enter code here` 
       "email":"[email protected]", 
       "initials":"MT", 
       "_id":{"$oid":"566a038404ebcdc344c5136d"} 
      }, 
     ] 
     }, 
     { 
     "teamname":"Team Two", 
     "_id":{"$oid":"566a07f404ebcdc344c51370"}, 
     "members":[ 
      { 
       "firstname":"Member", 
       "lastname":"Two", 
       "email":"[email protected]", 
       "initials":"MT", 
       "_id":{"$oid":"566a07f404ebcdc344c51371"} 
      }, 
     ] 
     }, 
     { 
     "teamname":"Team Three", 
     "_id":{"$oid":"566a083504ebcdc344c51373"}, 
     "members":[ 
      { 
       "firstname":"Member", 
       "lastname":"Four", 
       "email":"[email protected]", 
       "initials":"MF", 
       "_id":{"$oid":"566a083504ebcdc344c51374"} 
      }, 
     ] 
     } 
    ], 
} 

而我的清除路线看起来像;

exports.getTeamDelete = function(req, res) { 

    User.findById(req.user.id, function(err, user) { 
    if (err) return next(err); 
    var selectedTeamIndex; 
    for (i = 0; i < user.teams.length; i++){ 
     if (user.teams[i]._id==req.params.teamid){ 
     selectedTeamIndex=i; 
     break 
     } 
    } 

    console.log("before", user.teams) 
    console.log(req.params.teamid) 

    teamID=req.params.teamid; 
    userID=req.user.id; 

    User.update(
    {'_id': userID}, 
    { $pull: { "teams" : { teamID } } }, 
    { multi: true }, 
       function(err, data){ 
         console.log(err, data); 
       } 
    ); 

    user.markModified("teams"); 
    user.save(function(err) { 
     console.log("after", user.teams) 
     if (err) return next(err); 
     req.flash('success', { msg: 'Team deleted' }); 
    }); 
    }); 
}; 

控制台在User.update之前和之后的日志完全相同,我也没有得到任何错误。 console.log(err,data)的输出结果为:

null { ok: 1, nModified: 0, n: 1 } 

我真的不知道该如何解释。我试过也没有按照这里建议的传递userID。 https://stackoverflow.com/a/24289161/574869无效(相同的结果)。另外我已经尝试做用户更新为;

User.update(
    {'_id': userID}, 
    { $pull: { "teams" : { id: teamID } } }, 
    false, 
    true 
); 

这里提到https://stackoverflow.com/a/15641895/574869这导致和的误差;

/Users/markbreneman/Desktop/GatherRoundApp/node_modules/mongoose/lib/query.js:2022 
     oldCb(error, result ? result.result : { ok: 0, n: 0, nModified: 0 }); 
    ^

TypeError: oldCb is not a function 

我也不确定如何解释。如果任何人对我做错了什么有所了解,或者如何轻松从我的团队阵列中移除团队,我会非常感激。

回答

0
User.update( 
    { "_id" : userID} , 
    { "$pull" : { "teams" : { "_id" : teamID } } } , 
    { "multi" : true } 
)