Node.js Node Route.get（）需要回调函数，但得到了一个[object undefined]

我正在利用Passport创建一个Google OAuth2身份验证系统。我正在尝试用Coffeescript为其编写路由文件，但出于某些原因，我一直遇到以下错误：

D:\Programming\weebly-site\node_modules\express\lib\router\route.js:162
            throw new Error(msg);
                  ^
    Error: Route.get() requires callback functions but got a [object Undefined]
      at D:\Programming\weebly-site\node_modules\express\lib\router\route.js:162:15
      at Array.forEach (native)
      at Route.(anonymous function) [as get] (D:\Programming\weebly-site\node_module
    s\express\lib\router\route.js:158:15)
      at Function.proto.(anonymous function) [as get] (D:\Programming\weebly-site\no
    de_modules\express\lib\router\index.js:490:19)
      at Object.<anonymous> (D:\Programming\weebly-site\routes\admin.js:15:10)
      at Object.<anonymous> (D:\Programming\weebly-site\routes\admin.js:37:4)
      at Module._compile (module.js:456:26)
      at Object.Module._extensions..js (module.js:474:10)
      at Module.load (module.js:356:32)
      at Function.Module._load (module.js:312:12)
      at Module.require (module.js:364:17)
      at require (module.js:380:17)
      at Object.<anonymous> (D:\Programming\weebly-site\app.js:16:19)
      at Module._compile (module.js:456:26)
      at Object.Module._extensions..js (module.js:474:10)
      at Module.load (module.js:356:32)
      at Function.Module._load (module.js:312:12)
      at Module.require (module.js:364:17)
      at require (module.js:380:17)
      at Object.<anonymous> (D:\Programming\weebly-site\bin\www:3:11)
      at Module._compile (module.js:456:26)
      at Object.Module._extensions..js (module.js:474:10)
      at Module.load (module.js:356:32)
      at Function.Module._load (module.js:312:12)
      at Function.Module.runMain (module.js:497:10)
      at startup (node.js:119:16)
      at node.js:906:3

编译的JS文件：

// Generated by CoffeeScript 1.8.0
(function() {
  var express, isLoggedIn, passport, router;

  express = require('express');

  passport = require('../config/passport.js');

  router = express.Router();

  router.get('/', function(req, res) {
    return res.render('admin/admin_index.jade');
  });

  router.get('/editor', isLoggedIn, function(req, res) {
    return res.render('admin/admin_editor.jade');
  });

  router.get('/auth/google', passport.authenticate('google', {
    scope: ['profile', 'email']
  }));

  router.get('/auth/google/callback', passport.authenticate('google', {
    successRedirect: '/editor',
    failureRedirect: '/'
  }));

  isLoggedIn = function(req, res, next) {
    if (req.isAuthenticated()) {
      return next();
    }
    return res.redirect('/');
  };

  module.exports = router;

}).call(this);

---

在使用它之前，您还没有设置isLoggedIn，因此在那一点上它仍然是未定义的

动议如下：

isLoggedIn = function(req, res, next) {
  if (req.isAuthenticated()) {
    return next();
  }
  return res.redirect('/');
};

在这一行之前：

router.get('/editor', isLoggedIn, function(req, res) {

或者去掉

isLoggedIn

变量并使用

function isLoggedIn（）{}

语法来提升函数：

function isLoggedIn(req, res, next) {
  if (req.isAuthenticated()) {
    return next();
  }
  return res.redirect('/');
};

function isLoggedIn(req, res, next) {
  if (req.isAuthenticated()) {
    return next();
  }
  return res.redirect('/');
};