javascript - 快速验证器总是无效

Question

我正在最新版本的 nodejs 和 express 上构建一个项目，我有一个基本的站点设置，我只是想让用户身份验证工作(从 this 学习) )

但无论我做什么，我都无法让express-validator来验证它永远是无效的

validator deprecated you tried to validate a undefined but this library (validator.js) validates strings only. Please update your code as this will be an error soon. node_modules/express-validator/lib/express_validator.js:338:41

这是我遇到的唯一错误，但我不知道该怎么做，因为一切似乎都与 github 文档匹配

app.js

var express = require('express');
var path = require('path');
var favicon = require('serve-favicon');
var logger = require('morgan');
var cookieParser = require('cookie-parser');
var session = require('express-session');
var passport = require('passport');
var LocalStrategy = require('passport-local').Strategy;
var bodyParser = require('body-parser');
var expressValidator = require('express-validator');
var multer = require('multer');
var flash = require('connect-flash');
var mongo = require('mongodb');
var mongoose = require('mongoose');
var db = mongoose.connection;


var routes = require('./routes/index');
var users = require('./routes/users');

var app = express();

// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'jade');

// Handle File Uploads
var multer = require('multer');
var upload = multer({ dest: './uploads' });

// uncomment after placing your favicon in /public
//app.use(favicon(__dirname + '/public/favicon.ico'));
app.use(logger('dev'));
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: false }));

//Handle Express Sessions
app.use(session({
  secret:'secret',
  saveUninitialized: true,
  resave:true
}));

// Passport
app.use(passport.initialize());
app.use(passport.session());

// Validator
app.use(expressValidator({
  errorFormatter: function(param, msg, value) {
      var namespace = param.split('.')
      , root    = namespace.shift() 
      , formParam = root;

    while(namespace.length) {
      formParam += '[' + namespace.shift() + ']';
    }
    return {
      param : formParam,
      msg   : msg,
      value : value
    };
  }
}));

app.use(cookieParser());
app.use(express.static(path.join(__dirname, 'public')));

app.use(flash());
app.use(function (req, res, next) {
  res.locals.messages = require('express-messages')(req, res);
  next();
});

app.use('/', routes);
app.use('/users', users);

// catch 404 and forward to error handler
app.use(function(req, res, next) {
  var err = new Error('Not Found');
  err.status = 404;
  next(err);
});

// error handlers

// development error handler
// will print stacktrace
if (app.get('env') === 'development') {
  app.use(function(err, req, res, next) {
    res.status(err.status || 500);
    res.render('error', {
      message: err.message,
      error: err
    });
  });
}

// production error handler
// no stacktraces leaked to user
app.use(function(err, req, res, next) {
  res.status(err.status || 500);
  res.render('error', {
    message: err.message,
    error: {}
  });
});


module.exports = app;

路由/user.js

var express = require('express');
var router = express.Router();
var passport = require('passport');
var LocalStrategy = require('passport-local').Strategy;
var User = require('../models/user');

/* GET users listing. */
router.get('/', function(req, res, next) {
  res.send('respond with a resource');
});

router.get('/register', function(req, res, next) {
  res.render('register',{
  	'title': 'Register'
  });
});

router.get('/login', function(req, res, next) {
  res.render('login',{
  	'title': 'Login'
  });
});

router.post('/register',function(req, res, next){
	// Get Form Values
	var name = req.body.name;
	var email = req.body.email;
	var username = req.body.username;
	var password = req.body.password;
	var password2 = req.body.password2;

	// Check for Image Field
	if(req.files && req.files.profileImage){
		console.log('Uploading File...');

		// File Info
		var profileImageOriginalName 	= req.files.profileimage.originalname;
		var profileImageName 			= req.files.profileimage.name;
		var profileImageMime 			= req.files.profileimage.mimetype;
		var profileImagePath 			= req.files.profileimage.path;
		var profileImageExt 			= req.files.profileimage.extension;
		var profileImageSize 			= req.files.profileimage.size;
	} else {
		// Set a Default Image
		var profileImageName = 'noimage.png';
	}

	// Form Validation
	req.checkBody('name','Name field is required').notEmpty();
	req.checkBody('email','Email field is required').notEmpty();
	req.checkBody('email','Email not valid').isEmail();
	req.checkBody('username','Username field is required').notEmpty();
	req.checkBody('password','Password field is required').notEmpty();
	req.checkBody('password2','Passwords do not match').equals(req.body.password);

	// Check for errors
	var errors = req.validationErrors();

	if(errors){
		res.render('register',{
			errors: errors,
			name: name,
			email: email,
			username: username,
			password: password,
			password2: password2
		});
	} else {
		var newUser = new User({
			name: name,
			email: email,
			username: username,
			password: password,
			profileimage: profileImageName
		});

			// Create User
	User.createUser(newUser, function(err, user){
		if (err) throw err;
		console.log(user);
	});


		// Success Message
		req.flash('success','You are now registered and may log in');

		res.location('/');
		res.redirect('/');
	}
});

passport.serializeUser(function(user, done) {
  done(null, user.id);
});

passport.deserializeUser(function(id, done) {
  User.getUserById(id, function(err, user) {
    done(err, user);
  });
});

passport.use(new LocalStrategy(
	function(username, password, done){
		User.getUserByUsername(username, function(err, user){
			if(err) throw err;
			if(!user){
				console.log('Unknown User');
				return done(null, false,{message: 'Unknown User'});
			}

			User.comparePassword(password, user.password, function(err, isMatch){
				if(err) throw err;
				if(isMatch){
					return done(null, user);
				} else {
					console.log('Invalid Password');
					return done(null, false, {message:'Invalid Password'});
				}
			});
		});
	}
));

router.post('/login', passport.authenticate('local',{failureRedirect:'/users/login', failureFlash:'Invalid username or password'}), function(req, res){
	console.log('Authentication Successful');
	req.flash('success', 'You are logged in');
	res.redirect('/');
});


module.exports = router;

views/register.jade

extends layout

block content
	h1 Register
	p Please register using the form below
	ul.errors
		if errors
			each error, i in errors
				li.alert.alert-danger #{error.msg}
	form(method='post',action='/users/register',enctype='multipart/form-data')
		.form-group
			label Name
			input.form-control(name='name', type='text',placeholder='Enter Name')
		.form-group
			label Email
			input.form-control(name='email', type='email',placeholder='Enter Email')
		.form-group
			label Username
			input.form-control(name='username', type='text',placeholder='Username')
		.form-group
			label Password
			input.form-control(name='password', type='password',placeholder='Enter Password')
		.form-group
			label Confirm Password
			input.form-control(name='password2', type='password',placeholder='Confirm Password')
		.form-group
			label Profile Image
			input.form-control(name='profileimage', type='file')
		input.btn.btn-default(name='submit', type='submit',value='Register')

Answer 1

用 isEmpty() 代替 .notEmpty() 检查

来源:ValidateJS

isEmpty : validate.isEmpty(value)
Check if the given value is non empty. The following value are considered empty:

null
undefined
Empty strings
Whitespace only strings
Empty arrays
Empty objects