mongoose

问题 I've been reading documentaion and articles and everyone seems to describe a different way about using Mongoose and Bluebird together. Even the official Mongoose documentation says something and Bluebird documentaion says another thing. According to Mongoose: mongoose.Promise = require('bluebird'); According to Bluebird: var Promise = require("bluebird"); Promise.promisifyAll(require("mongoose")); So to my understanding, if you pick the Mongoose way a sample query would be like: User.findById

问题 I've been reading documentaion and articles and everyone seems to describe a different way about using Mongoose and Bluebird together. Even the official Mongoose documentation says something and Bluebird documentaion says another thing. According to Mongoose: mongoose.Promise = require('bluebird'); According to Bluebird: var Promise = require("bluebird"); Promise.promisifyAll(require("mongoose")); So to my understanding, if you pick the Mongoose way a sample query would be like: User.findById

问题 For instance, I have a collection User : var mongoose = require('mongoose'); var UserSchema = new mongoose.Schema({ email: String, googleId: String, facebookId: String, displayName: String, active: Boolean }); module.exports = mongoose.model('User', UserSchema); And then I have an ID: var userID = "some-user-id" What is the right way to just check if this id exists in the User collection. I don't need it to read the file or return it, I just need the true or false value. Here is one way to

问题 For instance, I have a collection User : var mongoose = require('mongoose'); var UserSchema = new mongoose.Schema({ email: String, googleId: String, facebookId: String, displayName: String, active: Boolean }); module.exports = mongoose.model('User', UserSchema); And then I have an ID: var userID = "some-user-id" What is the right way to just check if this id exists in the User collection. I don't need it to read the file or return it, I just need the true or false value. Here is one way to

问题 For instance, I have a collection User : var mongoose = require('mongoose'); var UserSchema = new mongoose.Schema({ email: String, googleId: String, facebookId: String, displayName: String, active: Boolean }); module.exports = mongoose.model('User', UserSchema); And then I have an ID: var userID = "some-user-id" What is the right way to just check if this id exists in the User collection. I don't need it to read the file or return it, I just need the true or false value. Here is one way to

问题 What is the use of mongoose methods and statics and how are they different from normal functions? Can anyone explain the difference with example. 回答1: Database logic should be encapsulated within the data model. Mongoose provides 2 ways of doing this, methods and statics. Methods adds an instance method to documents whereas Statics adds static "class" methods to the Models itself. Given the example Animal Model below: var AnimalSchema = mongoose.Schema({ name: String, type: String, hasTail:

问题 What is the use of mongoose methods and statics and how are they different from normal functions? Can anyone explain the difference with example. 回答1: Database logic should be encapsulated within the data model. Mongoose provides 2 ways of doing this, methods and statics. Methods adds an instance method to documents whereas Statics adds static "class" methods to the Models itself. Given the example Animal Model below: var AnimalSchema = mongoose.Schema({ name: String, type: String, hasTail:

问题 I'm using javascript and the mongoose module. I have an object like this my_object = { ShopName: String, employees: [String], info: { NameEmployee_1: { age: String, work: String, city: String, }, NameEmployee_2: { age: String, work: String, city: String, } } } and i want find all the emoplyees that have a specific age but without knowing the name of the emplyee, is there a way for do this? I know that you for example i can so something like this db.collection.find({'info.Max': {$exists: true}

问题 I'm using javascript and the mongoose module. I have an object like this my_object = { ShopName: String, employees: [String], info: { NameEmployee_1: { age: String, work: String, city: String, }, NameEmployee_2: { age: String, work: String, city: String, } } } and i want find all the emoplyees that have a specific age but without knowing the name of the emplyee, is there a way for do this? I know that you for example i can so something like this db.collection.find({'info.Max': {$exists: true}

问题 I do not know if the exact request in title is possible, but if not; i would really appreciate an alternate solution. I have this pre save method of mongoose ownerSchema.pre("save", function(next) { const owner = this; bcrypt.genSalt(10, function(err, salt) { bcrypt.hash(owner.password, salt, function(err, hash) { // Store hash in your password DB. owner.password = hash; next(); }); }); }); When i save new user(owner) a hash is created successfully and all is good> The problem occurs when i