node.js - Passport : different redirect for login and account registration

Question

我在我的应用程序中使用 Passport 模块(github 身份验证)，我想根据操作进行重定向...我检查它是否只是普通登录，或者用户是否是第一次登录。

passport.use(new GitHubStrategy({
    clientID: conf.github.app_id,
    clientSecret: conf.github.app_secret,
    callbackURL: conf.github.callback_url
  },
  function(accessToken, refreshToken, profile, done) {
    // asynchronous verification, for effect...
    process.nextTick(function () {

      // To keep the example simple, the user's GitHub profile is returned to
      // represent the logged-in user.  In a typical application, you would want
      // to associate the GitHub account with a user record in your database,
      // and return that user instead.

      Models_User.findOrCreateUser(profile, function(msg){
        console.log("auth type:" + msg);
      });

      return done(null, profile);

    });
  }
));

在我的 findOrCreateUser 函数中，我检查它是否是新用户并执行所有 db 操作......为了测试，我让函数返回一个 msg 变量，它只是一个表示“login”或“new_registration”的字符串。

所以我的问题是如何“传输”我从 findOrCreateUser 获得的变量，以便在 Passport 身份验证完成后我可以相应地重定向(“/welcome”或“/back_again”)。

我的应用程序中的另一个 Passport 代码:

// GET /auth/github
//   Use passport.authenticate() as route middleware to authenticate the
//   request.  The first step in GitHub authentication will involve redirecting
//   the user to github.com.  After authorization, GitHubwill redirect the user
//   back to this application at /auth/github/callback
app.get('/auth/github',
  passport.authenticate('github'),
  //passport.authenticate('github', { scope: ['user', 'public_repo', 'gist'] }),
  function(req, res){
    // The request will be redirected to GitHub for authentication, so this
    // function will not be called.
  });

// GET /auth/github/callback
//   Use passport.authenticate() as route middleware to authenticate the
//   request.  If authentication fails, the user will be redirected back to the
//   login page.  Otherwise, the primary route function function will be called,
//   which, in this example, will redirect the user to the home page.
app.get('/auth/github/callback', 
  passport.authenticate('github', { successRedirect: '/', failureRedirect: '/login' }),
  function(req, res) {
    res.redirect('/');
  });

Answer 1

在您的验证回调中，我会进行更改，以便 findOrCreateUser 函数将实际记录提供给回调，然后将其传递给 done()，像这样:

Models_User.findOrCreateUser(profile, function(user){
  console.log("auth type:" + msg);
  return done(null, user);
});

// take this out, use the actual model above
//return done(null, profile);

现在，在验证后处理回调 URL 时，您可以检查此用户记录，看看它是否是新的(我假设它在这里有一个 isNew 属性):

app.get('/auth/github/callback', 
  passport.authenticate('github', { failureRedirect: '/login' }),
  function(req, res) {
    // successful auth, user is set at req.user.  redirect as necessary.
    if (req.user.isNew) { return res.redirect('/back_again'); }
    res.redirect('/welcome');
  });