Multiple queries in documentdb-q-promises for Nodejs - node.js

Question

I want to render a page getting info for two different queries in CosmoDB using documentdb.
I have 2 queries:
var FirstQuery = {
query: 'SELECT * FROM FactoryData',
};
var SecondQuery = {
query: 'SELECT * FROM StoreData',
};
And have this to get the data
docDbClient.queryDocuments(collLink, FirstQuery ).toArray(function (err, results) {
value1 = results;
});
docDbClient.queryDocuments(collLink, SecondQuery ).toArray(function (err, results) {
value2 = results;
});
then i want to render the view with those results but i cant get it rendering from outise of this funcions.
res.render('view.html', {"value1" : value1 , "value2" : value2});
I know that this code will not work, but i was trying to implement promises and didn't know how to do it with documentdb-q-promises.
I already read a lot of documentation about Q promise but i dont get it.
Can someone explain to me how i can do it , I`m a beginner.

Answer 1

Based on your requirements,I followed the npm doc and test code on github to test following code in my local express project. Please refer to it.
var express = require('express');
var router = express.Router();
var DocumentClient = require('documentdb-q-promises').DocumentClientWrapper;
var host = 'https://***.documents.azure.com:443/'; // Add your endpoint
var masterKey = '***'; // Add the massterkey of the endpoint
var client = new DocumentClient(host, {masterKey: masterKey});
var collLink1 = 'dbs/db/colls/import';
var FirstQuery = 'select c.id,c.name from c';
var collLink2 = 'dbs/db/colls/item';
var returnArray = [];
client.queryDocuments(collLink1, FirstQuery).toArrayAsync().
then(function(response){
console.log(response.feed);
var map = {};
map['value1'] = response.feed;
returnArray.push(map);
return client.queryDocuments(collLink2, FirstQuery).toArrayAsync()
})
.then(function(response) {
console.log(response.feed);
var map = {};
map['value2'] = response.feed;
returnArray.push(map);
})
.fail(function(error) {
console.log("An error occured", error);
});
router.get('/', function(req, res, next) {
res.send(returnArray);
});
module.exports = router;
Test Result:
Hope it helps you.