在不覆盖用户请求对象的情况下使用多种策略的passport.js [英] Using passport.js with multiple strategies without overwriting user request object

问题描述

我使用passport.js 本地策略进行身份验证.我还需要用户通过 Facebook、Twitter 和 G+ 进行身份验证，但不是作为身份验证的替代方案，而是让用户能够从这些服务中检索他们的内容.

I'm using passport.js local-strategy for auth. I also need users to authenticate with Facebook, Twitter, and G+, but not as auth alternatives, but to enable the user to retrieve their content from those services.

正如所写的，每个身份验证策略都会将一个用户对象写入请求对象.这具有注销我的 root 用户的效果.有没有办法为这些额外的身份验证策略利用通行证，但不覆盖用户对象?

As written, each auth strategy writes a user object to the request object. This has the effect of logging-out my root user. Is there a way to leverage passport for these additional auth strategies, but not override the user object?

以下是规范示例:

var passport = require('passport')
  , TwitterStrategy = require('passport-twitter').Strategy;

passport.use(new TwitterStrategy({
    consumerKey: TWITTER_CONSUMER_KEY,
    consumerSecret: TWITTER_CONSUMER_SECRET,
    callbackURL: "http://www.example.com/auth/twitter/callback"
  },
  function(token, tokenSecret, profile, done) {
    User.findOrCreate(..., function(err, user) {
      if (err) { return done(err); }
      done(null, user); //trashes my existing user object
    });
  }
));

推荐答案

一种方法是使用回调而不是重定向.通常你会调用 req.login() 来设置请求对象.你可以跳过这一步，对响应做任何你想做的事情.

A way to do this is to use a callback rather than a redirect. Usually you would call req.login() to set the request object. You can just skip that step and do whatever you want with the response.

app.get('/auth/twitter/callback', function (req, res, next) {
        passport.authenticate('twitter', function (err, user, info) {
            res.send({err: err, user: user, info: info}); //skip req.login()
        })(req, res, next)
    });

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