与everyauth相关的困惑

Question

我正在使用这个例子everyauth应用程序。不过，我有一个困惑与此有关。

server.js文件

var express = require('express') 
    , everyauth = require('../index') 
    , conf = require('./conf') 
    , everyauthRoot = __dirname + '/..'; 

everyauth.debug = true; 

var usersById = {}; 
var nextUserId = 0; 

function addUser (source, sourceUser) { 
    var user; 
    if (arguments.length === 1) { // password-based 
    user = sourceUser = source; 
    user.id = ++nextUserId; 
    return usersById[nextUserId] = user; 
    } else { // non-password-based 
    user = usersById[++nextUserId] = {id: nextUserId}; 
    user[source] = sourceUser; 
    } 
    return user; 
} 

var usersByVimeoId = {}; 
var usersByJustintvId = {}; 
var usersBy37signalsId = {}; 
var usersByTumblrName = {}; 
var usersByDropboxId = {}; 
var usersByFbId = {}; 
var usersByTwitId = {}; 
var usersByGhId = {}; 
var usersByInstagramId = {}; 
var usersByFoursquareId = {}; 
var usersByGowallaId = {}; 
var usersByLinkedinId = {}; 
var usersByGoogleId = {}; 
var usersByAngelListId = {}; 
var usersByYahooId = {}; 
var usersByGoogleHybridId = {}; 
var usersByReadabilityId = {}; 
var usersByBoxId = {}; 
var usersByOpenId = {}; 
var usersByDwollaId = {}; 
var usersByVkId = {}; 
var usersBySkyrockId = {}; 
var usersByEvernoteId = {}; 
var usersByAzureAcs = {}; 
var usersByTripIt = {}; 
var usersBy500pxId = {}; 
var usersBySoundCloudId = {}; 
var usersByMailchimpId = {}; 
var usersMailruId = {}; 
var usersByMendeleyId = {}; 
var usersByLogin = { 
    'brian@example.com': addUser({ login: 'brian@example.com', password: 'password'}) 
}; 

everyauth.everymodule 
    .findUserById(function (id, callback) { 
    callback(null, usersById[id]); 
    }); 

everyauth.azureacs 
    .identityProviderUrl('https://acssample1.accesscontrol.windows.net/v2/wsfederation/') 
    .entryPath('/auth/azureacs') 
    .callbackPath('/auth/azureacs/callback') 
    .signingKey('d0julb9JNbCB8J2ACHzxU33SSiqbylQveQtuwOEvz24=') 
    .realm('urn:nodeacslocal') 
    .homeRealm('') 
    .tokenFormat('swt') 
    .findOrCreateUser(function (session, acsUser) { 
    return usersByAzureAcs[acsUser.id] || (usersByAzureAcs[acsUser.id] = addUser('azureAcs', acsUser)); 
    }) 
    .redirectPath('/'); 

everyauth 
    .openid 
    .myHostname('http://local.host:3000') 
    .findOrCreateUser(function (session, userMetadata) { 
     return usersByOpenId[userMetadata.claimedIdentifier] || 
     (usersByOpenId[userMetadata.claimedIdentifier] = addUser('openid', userMetadata)); 
    }) 
    .redirectPath('/'); 


everyauth 
    .facebook 
    .appId(conf.fb.appId) 
    .appSecret(conf.fb.appSecret) 
    .findOrCreateUser(function (session, accessToken, accessTokenExtra, fbUserMetadata) { 
     return usersByFbId[fbUserMetadata.id] || 
     (usersByFbId[fbUserMetadata.id] = addUser('facebook', fbUserMetadata)); 
    }) 
    .redirectPath('/'); 

everyauth 
    .twitter 
    .consumerKey(conf.twit.consumerKey) 
    .consumerSecret(conf.twit.consumerSecret) 
    .findOrCreateUser(function (sess, accessToken, accessSecret, twitUser) { 
     return usersByTwitId[twitUser.id] || (usersByTwitId[twitUser.id] = addUser('twitter', twitUser)); 
    }) 
    .redirectPath('/'); 

everyauth 
    .password 
    .loginWith('email') 
    .getLoginPath('/login') 
    .postLoginPath('/login') 
    .loginView('login.jade') 
// .loginLocals({ 
//  title: 'Login' 
// }) 
// .loginLocals(function (req, res) { 
//  return { 
//  title: 'Login' 
//  } 
// }) 
    .loginLocals(function (req, res, done) { 
     setTimeout(function() { 
     done(null, { 
      title: 'Async login' 
     }); 
     }, 200); 
    }) 
    .authenticate(function (login, password) { 
     var errors = []; 
     if (!login) errors.push('Missing login'); 
     if (!password) errors.push('Missing password'); 
     if (errors.length) return errors; 
     var user = usersByLogin[login]; 
     if (!user) return ['Login failed']; 
     if (user.password !== password) return ['Login failed']; 
     return user; 
    }) 

    .getRegisterPath('/register') 
    .postRegisterPath('/register') 
    .registerView('register.jade') 
// .registerLocals({ 
//  title: 'Register' 
// }) 
// .registerLocals(function (req, res) { 
//  return { 
//  title: 'Sync Register' 
//  } 
// }) 
    .registerLocals(function (req, res, done) { 
     setTimeout(function() { 
     done(null, { 
      title: 'Async Register' 
     }); 
     }, 200); 
    }) 
    .validateRegistration(function (newUserAttrs, errors) { 
     var login = newUserAttrs.login; 
     if (usersByLogin[login]) errors.push('Login already taken'); 
     return errors; 
    }) 
    .registerUser(function (newUserAttrs) { 
     var login = newUserAttrs[this.loginKey()]; 
     return usersByLogin[login] = addUser(newUserAttrs); 
    }) 

    .loginSuccessRedirect('/') 
    .registerSuccessRedirect('/'); 

everyauth.github 
    .appId(conf.github.appId) 
    .appSecret(conf.github.appSecret) 
    .findOrCreateUser(function (sess, accessToken, accessTokenExtra, ghUser) { 
     return usersByGhId[ghUser.id] || (usersByGhId[ghUser.id] = addUser('github', ghUser)); 
    }) 
    .redirectPath('/'); 

everyauth.instagram 
    .appId(conf.instagram.clientId) 
    .appSecret(conf.instagram.clientSecret) 
    .scope('basic') 
    .findOrCreateUser(function (sess, accessToken, accessTokenExtra, hipster) { 
     return usersByInstagramId[hipster.id] || (usersByInstagramId[hipster.id] = addUser('instagram', hipster)); 
    }) 
    .redirectPath('/'); 

everyauth.foursquare 
    .appId(conf.foursquare.clientId) 
    .appSecret(conf.foursquare.clientSecret) 
    .findOrCreateUser(function (sess, accessTok, accessTokExtra, addict) { 
     return usersByFoursquareId[addict.id] || (usersByFoursquareId[addict.id] = addUser('foursquare', addict)); 
    }) 
    .redirectPath('/'); 

everyauth.gowalla 
    .appId(conf.gowalla.apiKey) 
    .appSecret(conf.gowalla.apiSecret) 
    .moduleErrback(function(err) { 
    console.log("moduleErrback for Gowalla", err); 
    }) 
    .findOrCreateUser(function (sess, accessToken, accessTokenExtra, loser) { 
    return usersByGowallaId[loser.url] || (usersByGowallaId[loser.url] = addUser('gowalla', loser)); 
    }) 
    .redirectPath('/'); 

everyauth.linkedin 
    .consumerKey(conf.linkedin.apiKey) 
    .consumerSecret(conf.linkedin.apiSecret) 
    .findOrCreateUser(function (sess, accessToken, accessSecret, linkedinUser) { 
    return usersByLinkedinId[linkedinUser.id] || (usersByLinkedinId[linkedinUser.id] = addUser('linkedin', linkedinUser)); 
    }) 
    .redirectPath('/'); 

everyauth.google 
    .appId(conf.google.clientId) 
    .appSecret(conf.google.clientSecret) 
    .scope('https://www.googleapis.com/auth/userinfo.profile https://www.google.com/m8/feeds/') 
    .findOrCreateUser(function (sess, accessToken, extra, googleUser) { 
    googleUser.refreshToken = extra.refresh_token; 
    googleUser.expiresIn = extra.expires_in; 
    return usersByGoogleId[googleUser.id] || (usersByGoogleId[googleUser.id] = addUser('google', googleUser)); 
    }) 
    .redirectPath('/'); 

everyauth.angellist 
    .appId(conf.angellist.clientId) 
    .appSecret(conf.angellist.clientSecret) 
    .findOrCreateUser(function (sess, accessToken, extra, angellistUser) { 
    angellistUser.refreshToken = extra.refresh_token; 
    angellistUser.expiresIn = extra.expires_in; 
    return usersByAngelListId[angellistUser.id] || (usersByAngelListId[angellistUser.id] = addUser('angellist', angellistUser)); 
    }) 
    .redirectPath('/'); 

everyauth.yahoo 
    .consumerKey(conf.yahoo.consumerKey) 
    .consumerSecret(conf.yahoo.consumerSecret) 
    .findOrCreateUser(function (sess, accessToken, accessSecret, yahooUser) { 
    return usersByYahooId[yahooUser.id] || (usersByYahooId[yahooUser.id] = addUser('yahoo', yahooUser)); 
    }) 
    .redirectPath('/'); 

everyauth.googlehybrid 
    .myHostname('http://local.host:3000') 
    .consumerKey(conf.googlehybrid.consumerKey) 
    .consumerSecret(conf.googlehybrid.consumerSecret) 
    .scope(['http://docs.google.com/feeds/','http://spreadsheets.google.com/feeds/']) 
    .findOrCreateUser(function(session, userAttributes) { 
    return usersByGoogleHybridId[userAttributes.claimedIdentifier] || (usersByGoogleHybridId[userAttributes.claimedIdentifier] = addUser('googlehybrid', userAttributes)); 
    }) 
    .redirectPath('/'); 

everyauth.readability 
    .consumerKey(conf.readability.consumerKey) 
    .consumerSecret(conf.readability.consumerSecret) 
    .findOrCreateUser(function (sess, accessToken, accessSecret, reader) { 
     return usersByReadabilityId[reader.username] || (usersByReadabilityId[reader.username] = addUser('readability', reader)); 
    }) 
    .redirectPath('/'); 

everyauth 
    .dropbox 
    .consumerKey(conf.dropbox.consumerKey) 
    .consumerSecret(conf.dropbox.consumerSecret) 
    .findOrCreateUser(function (sess, accessToken, accessSecret, dropboxUserMetadata) { 
     return usersByDropboxId[dropboxUserMetadata.uid] || 
     (usersByDropboxId[dropboxUserMetadata.uid] = addUser('dropbox', dropboxUserMetadata)); 
    }) 
    .redirectPath('/') 

everyauth.vimeo 
    .consumerKey(conf.vimeo.consumerKey) 
    .consumerSecret(conf.vimeo.consumerSecret) 
    .findOrCreateUser(function (sess, accessToken, accessSecret, vimeoUser) { 
     return usersByVimeoId[vimeoUser.id] || 
      (usersByVimeoId[vimeoUser.id] = vimeoUser); 
    }) 
    .redirectPath('/') 

everyauth.justintv 
    .consumerKey(conf.justintv.consumerKey) 
    .consumerSecret(conf.justintv.consumerSecret) 
    .findOrCreateUser(function (sess, accessToken, accessSecret, justintvUser) { 
    return usersByJustintvId[justintvUser.id] || 
     (usersByJustintvId[justintvUser.id] = addUser('justintv', justintvUser)); 
    }) 
    .redirectPath('/') 

everyauth['37signals'] 
    .appId(conf['_37signals'].clientId) 
    .appSecret(conf['_37signals'].clientSecret) 
    .findOrCreateUser(function (sess, accessToken, accessSecret, _37signalsUser) { 
    return usersBy37signalsId[_37signalsUser.id] || 
     (usersBy37signalsId[_37signalsUser.identity.id] = addUser('37signals', _37signalsUser)); 
    }) 
    .redirectPath('/') 

everyauth.tumblr 
    .consumerKey(conf.tumblr.consumerKey) 
    .consumerSecret(conf.tumblr.consumerSecret) 
    .findOrCreateUser(function (sess, accessToken, accessSecret, tumblrUser) { 
    return usersByTumblrName[tumblrUser.name] || 
     (usersByTumblrName[tumblrUser.name] = addUser('tumblr', tumblrUser)); 
    }) 
    .redirectPath('/'); 

everyauth.box 
    .apiKey(conf.box.apiKey) 
    .findOrCreateUser(function (sess, authToken, boxUser) { 
    return usersByBoxId[boxUser.user_id] || 
     (usersByDropboxId[boxUser.user_id] = addUser('box', boxUser)); 
    }) 
    .redirectPath('/'); 

everyauth.dwolla 
    .appId(conf.dwolla.clientId) 
    .appSecret(conf.dwolla.clientSecret) 
    .scope('accountinfofull') 
    .findOrCreateUser(function (sess, accessToken, accessTokenExtra, dwollaUser) { 
    return usersByDwollaId[dwollaUser.id] || (usersByDwollaId[dwollaUser.id] = addUser('dwolla', dwollaUser)); 
    }) 
    .redirectPath('/'); 

everyauth.vkontakte 
    .appId(conf.vkontakte.appId) 
    .appSecret(conf.vkontakte.appSecret) 
    .findOrCreateUser(function (session, accessToken, accessTokenExtra, vkUserMetadata) { 
    return usersByVkId[vkUserMetadata.uid] || 
     (usersByVkId[vkUserMetadata.uid] = addUser('vkontakte', vkUserMetadata)); 
    }) 
    .redirectPath('/'); 

everyauth.mailru 
    .appId(conf.mailru.appId) 
    .appSecret(conf.mailru.appSecret) 
    .findOrCreateUser(function (session, accessToken, accessTokenExtra, mlUserMetadata) { 
    return usersMailruId[mlUserMetadata.uid] || 
     (usersMailruId[mlUserMetadata.uid] = addUser('mailru', mlUserMetadata)); 
    }) 
    .redirectPath('/'); 

everyauth.skyrock 
    .consumerKey(conf.skyrock.consumerKey) 
    .consumerSecret(conf.skyrock.consumerSecret) 
    .findOrCreateUser(function (sess, accessToken, accessTokenExtra, skyrockUser) { 
    return usersBySkyrockId[skyrockUser.id_user] || (usersBySkyrockId[skyrockUser.id_user] = addUser('skyrock', skyrockUser)); 
    }) 
    .redirectPath('/'); 

everyauth.evernote 
    .oauthHost(conf.evernote.oauthHost) 
    .consumerKey(conf.evernote.consumerKey) 
    .consumerSecret(conf.evernote.consumerSecret) 
    .findOrCreateUser(function (sess, accessToken, accessTokenExtra, enUserMetadata) { 
    return usersByEvernoteId[enUserMetadata.userId] || (usersByEvernoteId[enUserMetadata.userId] = addUser('evernote', enUserMetadata)); 
    }) 
    .redirectPath('/'); 

everyauth.tripit 
    .consumerKey(conf.tripit.consumerKey) 
    .consumerSecret(conf.tripit.consumerSecret) 
    .findOrCreateUser(function (sess, accessToken, accessTokenExtra, tripitProfile) { 
    var userId = tripitProfile['@attributes'].ref; 
    return usersByTripIt[userId] || (usersByTripIt[userId] = addUser('tripit', tripitProfile)); 
    }) 
    .redirectPath('/'); 

everyauth['500px'] 
    .consumerKey(conf._500px.consumerKey) 
    .consumerSecret(conf._500px.consumerSecret) 
    .findOrCreateUser(function(sess, accessToken, accessSecret, user) { 
    return usersBy500pxId[user.id] || (usersBy500pxId[user.id] = addUser('500px', user)); 
    }) 
    .redirectPath('/'); 

everyauth.mendeley 
    .consumerKey(conf.mendeley.consumerKey) 
    .consumerSecret(conf.mendeley.consumerSecret) 
    .findOrCreateUser(function(sess, accessToken, accessSecret, user) { 
    return usersByMendeleyId[user.main.profile_id] || (usersByMendeleyId[user.main.profile_id] = addUser('mendeley', user)); 
    }) 
    .redirectPath('/'); 

everyauth 
    .soundcloud 
    .appId(conf.soundcloud.appId) 
    .appSecret(conf.soundcloud.appSecret) 
    .findOrCreateUser(function (sess, accessToken, accessTokenExtra, soundcloudUser) { 
     return usersBySoundCloudId[soundcloudUser.id] || (usersBySoundCloudId[soundcloudUser.id] = addUser('soundcloud', soundcloudUser)); 
    }) 
    .redirectPath('/'); 

everyauth 
    .mixi 
    .appId(conf.mixi.consumerKey) 
    .appSecret(conf.mixi.consumerSecret) 
    .scope(conf.mixi.scope) 
    .display('pc') 
    .findOrCreateUser(function (session, accessToken, accessTokenExtra, mixiUserMetadata) { 
     return usersByFbId[mixiUserMetadata.id] || 
     (usersByFbId[mixiUserMetadata.id] = addUser('mixi', mixiUserMetadata)); 
    }) 
    .redirectPath('/'); 

everyauth 
    .mailchimp 
    .appId(conf.mailchimp.appId) 
    .appSecret(conf.mailchimp.appSecret) 
    .myHostname(process.env.HOSTNAME || "http://127.0.0.1:3000")//MC requires 127.0.0.1 for dev 
    .findOrCreateUser(function (session, accessToken, accessTokenExtra, mailchimpUser){ 
     return usersByMailchimpId[mailchimpUser.id] || 
     (usersByMailchimpId[mailchimpUser.user_id] = addUser('mailchimp', mailchimpUser)); 
    }) 
    .redirectPath("/"); 

var app = express(); 
app.use(express.static(__dirname + '/public')) 
    .use(express.favicon()) 
    .use(express.bodyParser()) 
    .use(express.cookieParser('htuayreve')) 
    .use(express.session()) 
    .use(everyauth.middleware(app)); 

app.configure(function() { 
    app.set('view engine', 'jade'); 
    app.set('views', everyauthRoot + '/example/views'); 
}); 

app.get('/', function (req, res) { 
    res.render('home'); 
}); 

app.listen(3000); 

console.log('Go to http://local.host:3000'); 

module.exports = app; 

home.jade文件

html 
    head 
    link(rel='stylesheet', href='style.css') 
    title 
    Clicker 
    body(bgcolor="#a52e42") 
    div(align="center") 
     .main 
     .banner 
      img(style='float:left', src='temple_logo.png', width='120px') 
      .header 
      h2 Welcome to the clicker app 
      div(style="clear:left") 
     - if (!everyauth.loggedIn) 
      #register.button(style='float:right') 
      a(href='/register') Register 
      #password-login.button(style='float:right') 
      a(href='/login', style='border: 0px') Login 
      #fb-login.button(style='float:right') 
      a.fb_button_medium(href='/auth/facebook') 
       span#fb_login_text.fb_button_text 
       img(style='border: 0px', src='facebook.jpeg',width='150px', height='20px') 
      #twitter-login.button(style='float:right') 
      a(href='/auth/twitter', style='border: 0px') 
       img(style='border: 0px', src='https://si0.twimg.com/images/dev/buttons/sign-in-with-twitter-l.png',width='150px',height='20px') 
      div(style="clear:right") 
      #content(align="left") 

     - else 
      - if (everyauth.facebook) 
      h3 Facebook User Data 
      p= JSON.stringify(everyauth.facebook.user) 
      - if (everyauth.twitter) 
      h3 Twitter User Data 
      p= JSON.stringify(everyauth.twitter.user) 
      h3 
      a(href='/logout') Logout 

我的问题是我没有通过everyauth变量玉文件。那么它如何才能访问它。我的意思是这个代码工作正常。但为什么会这样。我没有通过everyauth变量。

我试图在不同的应用程序中完成相同的操作，即集成everyauth。但是这里显示的是，在玉文件中没有定义每个文件。为什么这样？

Answer 1

它看起来像everyauth中间件使用dynamicHelpers在每个请求中设置局部变量（有关它们的好文章there）。但要小心，express migration guide (from 2.x to 3.x)说，你不应该再使用它们了。

visionmedia提供该片段，例如（discution there）：

app.use(require('connect-flash')()); 
// Expose the flash function to the view layer 
app.use(function(req, res, next) { 
    res.locals.flash = function() { return req.flash() }; 
    next(); 
})