Express，Mongoose – .update（）返回null

当我试图更新我的模型中的文档时，.update（）返回null，但.find（）方法正常工作。

module.exports.updateBio = function(req, res) { var userID = req.params.id; var objForUpdate = {}; if (!troolr.isEmptyString(req.body.profile_picture)) objForUpdate.profile_picture = req.body.profile_picture; if (!troolr.isEmptyString(req.body.title)) objForUpdate.title = req.body.title; if (!troolr.isEmptyString(req.body.intro)) objForUpdate.intro = req.body.intro; if (!troolr.isEmptyString(req.body.summary)) objForUpdate.summary = req.body.summary; if (!troolr.isEmptyString(req.body.skills)) objForUpdate.skills = req.body.skills; if (!troolr.isEmptyString(req.body.facebook)) objForUpdate.social.facebook = req.body.facebook; if (!troolr.isEmptyString(req.body.twitter)) objForUpdate.social.twitter = req.body.twitter; if (!troolr.isEmptyString(req.body.linkedin)) objForUpdate.social.linkedin = req.body.linkedin; if (!troolr.isEmptyString(req.body.website)) objForUpdate.social.website = req.body.website; var conditions = { "_id": userID } , setObj = { $set: objForUpdate } , options = { multi: true }; //This throws error // Error: { ok: 0, n: 0, nModified: 0 } Profile.update(conditions, setObj, (err, page) =>{ if(err) throw err; console.log(page); }); // This works fine but it erases old values if they are empty /* Profile.findById(userID, (error, user) => { if(error) return res.status(500).json({ success: false, error: error }); user.bio = objForUpdate; user.save(function(error) { if(error) return res.status(500).json({ success: false, error: error }); return res.status(200).json({ success: true, message: "Bio successfully updated." }); }); }); */ }; 

// API端点

 http://localhost:3000/api/v1/profile/592c53b3bdf350ce004ad717/updatebio 

// API定义

 'use strict'; /** * Routes for Profile Model * **/ var passport = require('passport'); var jwt = require('jwt-simple'); var settings = require("settings"); var profileCtrl = require(settings.PROJECT_DIR + 'routes/controllers/api/profile'); module.exports = function(app) { app.get('/all', profileCtrl.getAll); app.get('/:id', profileCtrl.getSingle); app.put('/:id/updateurl', profileCtrl.updateURL); app.put('/:id/updateaddress', profileCtrl.updateAddress); app.put('/:id/updatebio', profileCtrl.updateBio); } 

//型号

 var mongoose = require('mongoose'); // User Schema var ProfileSchema = mongoose.Schema({ url : { type: String, unique: true, }, fname: { type: String, required: true }, lname: { type: String, required: true }, email: { type: String, unique: true, required: true }, bio: { profile_picture: { type: String }, title: { type: String }, intro: { type: String }, summary: { type: String }, skills: { type: Object }, social: { linkedin: { type: String }, twitter: { type: String }, facebook: { type: String }, website: { type: String } }, }, location: { address: { type: String }, apt: { type: String }, city: { type: String }, state: { type: String }, zip_code: { type: String }, country: { type: String } }, phone: { type: Number }, listings: { type: Object }, reviews: { type: Object }, verfied: { type: Boolean, default: false }, // expires: { // type: Date, // expires: '1h', // default: Date.now // }, }); var Profile = module.exports = mongoose.model('Profile', ProfileSchema); module.exports.getUserByEmail = function(email, callback){ var query = {'email': email}; Profile.findOne(query, callback); } module.exports.checkIfUrlExists = function(res, url, callback){ var query = {'url': url}; Profile.findOne(query, function(error, found) { if(error) return res.status(500).json(error); if(found) return res.status(500).json({success: false, message: "URL already exists" }); if(callback) callback(); }); } 

//我正在尝试更新的文档

 { "_id": "592c53b3bdf350ce004ad717", "url": "hyoh7ryb-", "fname": "Foo", "lname": "Bar", "email": "[e-mail]", "__v": 0, "verfied": false } 

Answer 1

没有在模式中定义的任何东西都不会被保存。 当你准备将objForUpdate $set为$set时，这就是发生了什么事情：

 var objForUpdate = {}; if (!troolr.isEmptyString(req.body.profile_picture)) objForUpdate.profile_picture = req.body.profile_picture; 

这应该是

 var objForUpdate = { bio: {} }; if (!troolr.isEmptyString(req.body.profile_picture)) objForUpdate.bio.profile_picture = req.body.profile_picture; if (!troolr.isEmptyString(req.body.title)) objForUpdate.bio.title = req.body.title; // and so on 

save正在工作，因为将对象保存在正确的键user.bio = objForUpdate;