如何立即保存在一个Sequelize beforeCreate钩子？

我试图在创build和保存密码之前对其进行哈希处理。 然而，当我有我的钩子定义如下，我注意到日志创build一个来宾实例与原始密码，然后立即更新它。 我不知道为什么。

// define model const Guest = sequelize.define('guest', { email: { type: Sequelize.STRING, allowNull: false, }, password: { type: Sequelize.STRING, allowNull: false, } }); Guest.beforeCreate(function(guest) { bcrypt.genSalt(10, function(error, salt) { if (error) { return error } bcrypt.hash(guest.password, salt, null, function(error, hash) { if (error) { return error } guest.password = hash; guest.save(); }) }) }); 

这是我在另一个文件中实际创build实例的地方

 //.. const email = req.body.email; const password = req.body.password; Guest.findOne({ where: { email: email }}) .then(function(existingUser) { if (existingUser) { return res.status(422).send({ error: 'Email is already in use'}) } Guest.create({ email: email, password: password }).then(function(guest) { res.json({ token: tokenForGuest(guest) }); }); }); 

但是，当我这样做时，它会立即创build带有此密码的实例（不是使用提供的密码创build的，然后使用已设置的密码进行更新）：

 Guest.beforeCreate(function(guest) { guest.password = 'TEST'; }); 

这是我得到的我的服务器日志：

 Executing (default): SELECT "id", "email", "password", "createdAt", "updatedAt" FROM "guests" AS "guest" WHERE "guest"."email" = '[e-mail]' LIMIT 1; Executing (default): INSERT INTO "guests" ("id","email","password","createdAt","updatedAt") VALUES (DEFAULT,'[e-mail]','passwordsecret123','2016-06-26 16:26:54.683 +00:00','2016-06-26 16:26:54.683 +00:00') RETURNING *; ::1 - - [26/Jun/2016:16:26:55 +0000] "POST /signup HTTP/1.1" 200 133 "-" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_0) AppleWebKit/537.36 (KHTML, like Gecko) Postman/4.2.2 Chrome/47.0.2526.73 Electron/0.36.2 Safari/537.36" Executing (default): UPDATE "guests" SET "password"='$2a$10$VsU97hLMxZ76zGmNfJVlfOeXayyFbGMKK/EwE3SvKhOOEi9oAm9Qy',"updated At"='2016-06-26 16:26:55.428 +00:00' WHERE "id" = 20 

任何和所有的帮助将不胜感激。 谢谢！

Answer 1

尝试

 Guest.beforeCreate(function(guest, options, done) { bcrypt.genSalt(10, function(err, salt) { if (err) return done(err); console.log('Salt: ' + 'getting ' + salt); bcrypt.hash(guest.password, salt, null, function(err, hash) { if (err) return done(err); console.log('Info: ' + 'getting ' + hash); guest.password = hash; console.log('Info: ' + 'password now is: ' + guest.password); return done(null,guest); }); }); });