node.js Passport 和 connect-flash：req.flash 不是函数
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/34310348/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
Passport and connect-flash: req.flash is not a function
提问by qts
I'm learning flashmessaging in passportand got stuck on this error when running my script:
我正在学习flash消息传递，passport但在运行我的脚本时遇到了这个错误：
req.flash is not a function
Here is my configuration:
这是我的配置：
var flash=require("connect-flash");
app.use(flash());
passport.use(new LocalStrategy(function(req,username, password,done) {
process.nextTick(function() {
UserDetails.findOne({'username': username}, function(err, user) {
if (err) {
return done(err);
}
if (!user) {
return done(null, false,req.flash('message','Invalid username or password'));
}
if (user.password != password) {
return done(null, false,req.flash('message','Invalid username or password' ));
}
return done(null, user);
});
});
}));
My route:
我的路线：
app.get('/', function (req, res) {
res.render('login',{ message: req.flash('message') });
});
My strategy:
我的策略：
app.post('/login', function(req,res,next){
passport.authenticate('local', function(err, user) {
if (err) { return next(err); }
if (!user) { return res.redirect('/')}
req.logIn(user, function(err) {
if (err) { return next(err); }
arenderFunction(req,res);
});
})
(req, res, next);
});
Any help is much appreciated!
任何帮助深表感谢！
采纳答案by robertklep
The request object isn't passed to the strategy callback by default, you need to set the passReqToCallbackoption for this:
默认情况下，请求对象不会传递给策略回调，您需要为此设置passReqToCallback选项：
passport.use(new LocalStrategy({
passReqToCallback : true
}, function(req, username, password, done) { ... }));
This is documented here.
这在此处记录。
回答by M. Salah
Set flash before the app.router
在 app.router 之前设置 flash
app.use(express.cookieParser());
app.use(express.session({ secret: "secret" }));
//app.use(passport.initialize());
//app.use(passport.session()); // persistent login sessions
app.use(flash());
app.use(app.router);
