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mongooseとnode.jsを初めて使用しました。私はこのチュートリアルに従います：https://scotch.io/tutorials/using-mongoosejs-in-node-js-and-mongodb-applications#sample-model-for-usersMongooseの "スキーマメソッド"コールバックが動作しない
私のエントリポイントindex.jsで、私は "chenya.saltHashPassword（function（err、passwordHash）"を呼び出そうとしましたが、実際にはuser.jsで呼び出されます。しかし、すべてでindex.jsで、このメソッドの呼び出しのためのログメッセージはありませんこれとは対照的に、保存方法が成功した貯蓄を示すログメッセージをプリントアウトすることができます。：
私のユーザーで//Lets load the mongoose module in our program
var mongoose = require('mongoose');
//Lets connect to our database using the DB server URL.
mongoose.connect('mongodb://localhost:27017/server_naturis');
// if our user.js file is at app/models/user.js
var User = require('./user');
// create a new user called Chenya
var chenya = new User({
userName: 'Chenya',
email: '[email protected]',
password: 'Chenya'
});
// call the custom method. hash the password
chenya.saltHashPassword(function(err, passwordHash) { // NOT CALLED!
if (err) {
console.log('chenya.saltHashPassword: ' + err);
} else {
this.password = passwordHash;
console.log('Your hashed password is ' + passwordHash);
}
});
// call the built-in save method to save to the database
chenya.save(function(err) { // CALLED!
if (err) {
console.log('chenya.save: ' + err);
} else {
console.log('User saved successfully!');
}
});
を、3つのログメッセージをプリントアウトします。 .js、私はスキーマ関数 "userSchema.methods.saltHashPassword"を持っています：
// grab the things we need
var mongoose = require('mongoose');
var Schema = mongoose.Schema;
// Require the crypto module for password hash
'use strict';
var crypto = require('crypto');
// create a schema
var userSchema = new Schema({
userName: { type: String, required: true, unique: true },
email: { type: String, required: true, unique: true },
password: { type: String, required: true },
});
// add a schema method
/**
* generates random string of characters i.e salt
* @function
* @param {number} length - Length of the random string.
*/
var genRandomString = function(length){
return crypto.randomBytes(Math.ceil(length/2))
.toString('hex') /** convert to hexadecimal format */
.slice(0,length); /** return required number of characters */
};
/**
* hash password with sha512.
* @function
* @param {string} password - List of required fields.
* @param {string} salt - Data to be validated.
*/
var sha512 = function(password, salt){
var hash = crypto.createHmac('sha512', salt); /** Hashing algorithm sha512 */
hash.update(password);
var value = hash.digest('hex');
return {
salt:salt,
passwordHash:value
};
};
/**
* a function that will use the above function
* to generate the hash that should be stored
* in the database as user’s password.
*/
userSchema.methods.saltHashPassword = function() {
var salt = genRandomString(16); /** Gives us salt of length 16 */
var passwordData = sha512(this.password, salt);
console.log('UserPassword = '+ this.password);
console.log('Passwordhash = '+ passwordData.passwordHash);
console.log('\nSalt = '+ passwordData.salt);
return passwordData.passwordHash;
}
// the schema is useless so far
// we need to create a model using it
var User = mongoose.model('User', userSchema);
// make this available to our users in our Node applications
module.exports = User;
ターミナル：
UserPassword = Chenya
Passwordhash = 5bb5bf2181e2c713bae1eb49d1f3646b23db839368d38c33951774c92cec39a3c4b855aea30875e72cce6f271bdbdb27de8976c9316df09d086435b6c5629548
Salt = a88384d072b720de
(node:11717) DeprecationWarning: Mongoose: mpromise (mongoose's default promise library) is deprecated, plug in your own promise library instead: http://mongoosejs.com/docs/promises.html
User saved successfully!