Question

var mongoose =  require('mongoose');
var bcrypt = require('bcrypt-nodejs');
var Schema =  mongoose.Schema;

var UserSchema = new Schema({
    username:{type: String,lowercase: true, required: true,unique:true},
    password:{type:String, required:true},
    email:{type:String,required:true,lowercase:true,unique:true},
});

// mongoose middleware
UserSchema.pre('save',(req,res,next)=>{
    var user = this;
    bcrypt.hash(user.password,null,null,(err,hash)=>{
        if(err) return next(err);
        user.password = hash;
        next();
    });
 });
 module.exports = mongoose.model('User',UserSchema);

低于错误我无法找出错误

POST / users 200 58.468 ms - 14 /var/www/html/meanstacktutorial/app/models/user.js:17 下一个（）; ^

ReferenceError: next is not defined
    at bcrypt.hash (/var/www/html/meanstacktutorial/app/models/user.js:17:9)
    at /var/www/html/meanstacktutorial/node_modules/bcrypt-nodejs/bCrypt.js:631:3
    at _combinedTickCallback (internal/process/next_tick.js:131:7)
    at process._tickCallback (internal/process/next_tick.js:180:9)
[nodemon] app crashed - waiting for file changes before starting...

当我设置密码加密然后它得到一些错误，如“next（）未定义”为什么我不知道确切..我一直试图解决问题但我不能请帮助我谢谢你

Answer 1

传递给预保存挂钩的函数只能将 next 作为参数。

您还传递了 req 和 res 。

请改为尝试：

UserSchema.pre('save', (next) => {
  var user = this;
  bcrypt.hash(user.password, null, null, (err, hash) => {
    if(err) return next(err);
    user.password = hash;
    next();
  });
});

我希望这会有所帮助。

bcrypt next（）未定义

1 个答案: