NodeJS Express pass values during redirect

Question

I have a post function that get's some information from the view and stores processed values in variables declared in the scope of the function

 router.post('/searchbook', function(req, res, next){ var s_book_name="n/a"; var s_author_name="n/a"; var s_isbn13_id="n/a"; var isbn=req.body.isbn; var url="http://isbndb.com/api/v2/json/63JEP95R/book/"+isbn; request({ url: url, json: true }, function (error, response, body) { if (!error && body.data!=null && response.statusCode === 200) { if(body.data[0].title!=null) s_book_name=body.data[0].title; if(body.data[0].author_data[0]!=null) s_author_name=body.data[0].author_data[0].name; if(body.data[0].isbn13!=null) s_isbn13_id=isbn; } else { error="Book not found. Please enter the information manually."; res.redirect('/newbook'); } }).then(function() { res.redirect('/newbook2'); }); });

Now I have a get function that should send this information to another view.

router.get('/newbook2', function(req, res){ res.render('newbook2', {title: 'Add New Book',s_book: s_book_name, s_author: s_author_name, s_isbn13: s_isbn13_id ,s_publisher: s_publisher_name , s_category: s_category_id}); });

But the information in the view is always shown as undefined. I believe the values used in the get function is outside the scope. Should I use global variables? Is there another way of doing this.

RIYAJ KHAN · Accepted Answer · 2016-06-27 06:36:53Z

Either you should use app#locals to set the variable available throughout app.

Or you can pass the data using query string parameter and access it using

Without expressJs

var url = require('url'); http.createServer(function(req,res){ var url_parts = url.parse(req.url, true); var query = url_parts.query; console.log(query); // })

Using expressJS,you can use req#query

app.get('/path',function(req,resp){ req.query // get querystring })

You mean like router.get('/newbook2', function(req, res){ res.render('newbook2', {s_book: req.s_book_name... It isn't working. Still undefined
No.reso.render will work only for current req-resp cycle and not for redirection

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