Pass Array Of Objects From Route To Route

I'm using Node.js and Express.js and I tried to pass an array of objects from route to other route. I tried to pass through QueryString, but the typeof says that it is an object an

Solution 1:

You can use JSON.stringify.

app.get('/names', function(req, res) {
  var arr = new Array();
  arr.push({name: 'John'});
  arr.push({name: 'Dani'});

  res.redirect('/contacts?arr=' + JSON.stringify(arr));
})

app.get('/contacts', function(req, res) {
  var arr = req.query.arr;
  console.log(JSON.parse(arr));
})

Solution 2:

Another approach would be to use app.locals. Basically, it allows you to store some variables for the lifetime of the application. For routes, there will be req.app.locals.

So how to use it then?

app.get('/names', function(req, res) {
    var arr = new Array();
    arr.push({name: 'John'});
    arr.push({name: 'Dani'});

    req.app.locals.nameOfYourArr = arr;
    res.redirect('/contacts');
})

app.get('/contacts', function(req, res) {
    var arr = req.app.local.nameOfYourArr;
    console.log(arr[0].name);
})

(More info can be found here)