javascript - Express 4 HTTP requests: user._id undefined -

i'm writing simple express app handle image uploads , searches. upload works fine same req.user._id invalid in request. idea why?

//standard express-generator server.js requires //passport.js implementation   var session      = require('express-session');  app.use(session({    secret: '*****',    proxy: true,    resave: true,    saveuninitialized: true   })); 

the post function works fine using multer middleware. uses req.user._id no issues - i've checked it's being uploaded database.

app.post('/upload/photodata', upload.single('photo'), function(req, res) {      //retrieve data request using multer middleware objects     var title = req.body.title;     var description = req.body.description;     var photourl = req.file.filename;     var date = new date();     var user_id = req.user._id;      //code create mongoose photo model instance using variables above , save   }); 

immediately after i'm testing function returns following error: typeerror: cannot read property '_id' of undefined

app.get('/file/newcalendar', function(req, res) {    var selecteddate = moment(req.query.m)//moment(req.query.m);   var selectedmonth = selecteddate.month()//selecteddate.month();   var user_idlookup = req.query.v;     if(!user_idlookup){       user_idlookup = req.user._id;     };      jsontest = {       'selecteddate': selecteddate,       'selectedmonth': selectedmonth,       'user': user_idlookup     }; }) 

well feel stupid now. req.user not defined because manually submitting request before signing in/serializing user!