node.js - 类型错误 : Object # has no method 'flash'

Question

我在使用 Node.js 和 Express 时收到以下错误。这是我的版本:

Node : v0.8.8
Express: 3.0.0rc3

尝试访问页面时出现以下错误:

TypeError: Object #<IncomingMessage> has no method 'flash'
    at routes (/Users/nblavoie/Desktop/HotPie/HotPie/apps/authentication/routes.js:23:8)

我试图删除 app.use(app.router);从 app.js 没有成功。这是导致错误的代码。请参阅 req.flash 行。

app.post('/sessions', function(req, res)
{
    if(req.body.user == 'piechief' 
        && req.body.password == '12345')
    {
        req.session.currentUser = req.body.user;
        req.flash('info', "You're logged in as #{req.session.currentUser}");
        res.redirect("/login");
        return;
    }
    else
    {
        req.flash('error', "Those credentials were incorrect. Try again.");
        res.redirect("/login");
        return;
    }
});

这是我的 app.js 中有趣的部分:

var app = express();

app.configure(function(){
  app.set('port', process.env.PORT || 3000);
  app.set('views', __dirname + '/views');
  app.set('view engine', 'jade');
  app.use(express.favicon());
  app.use(express.logger('dev'));
  app.use(express.bodyParser());
  app.use(express.methodOverride());
  app.use(express.cookieParser());
  app.use(express.session({
    secret: "DBBD6BE563419EDB0E5CBD228E603D4AD232CE05434B4FA95C6908B64EA515C3",
    store: new RedisStore({
      host: "127.0.0.1",
      port: "6379",
      db: "mydb"
    })
  }));
  app.use(app.router);
  app.use(express.static(path.join(__dirname, '/public')));
});

有什么想法吗？我对 Express'flash documentation 很感兴趣而且我看不出我做错了什么。

Answer 1

req.flash 已经是 removed as of 3.0 :

• req.flash() (just use sessions: req.session.messages = ['foo'] or similar)
• connect-flash can be used as middleware to provide req.flash()