Question

您好我正在尝试从mongoDB中删除一个值，但是代码没有删除特定值，而是从架构中删除所有用户lol。

var mongoose = require('mongoose');
var User = require('../../models/UserModel');

module.exports.unfollow = function(req, res){

    var thefollowee = req.body.followee;
    var thefollower = req.body.follower;


    User.find({_id: thefollower}).remove({following: thefollowee}).exec();

    User.find({_id: thefollowee}).remove({followers: thefollower}).exec();

    res.json({ message: 'Unfollowed'});




};

被访者指的是被跟踪者的身份，跟随者指向跟随被跟随者的用户的ID。

Answer 1

好的，所以我通过使用$ pull方法得到它

var mongoose = require('mongoose');
var User = require('../../models/UserModel');

module.exports.unfollow = function(req, res){

    var thefollowee = req.body.followee;
    var thefollower = req.body.follower;


        User.findByIdAndUpdate(thefollowee, { $pull: { followers: req.body.follower }}, function (err, user) {

            if (err)

            return handleError(err);

        });

        User.findByIdAndUpdate(thefollower, { $pull: { following: req.body.followee }}, function (err, user) {

            if (err)

            return handleError(err);

        });

    res.json({ message: 'Unfollowed'});




};

从mongoDB数组中删除值

1 个答案: