node.js - How to render the frontpage with two or more queries -


we have express server configured in file called app.js, our crowdfunding platform.

each page declared app.get & res.render, this: 

app.get('/some-page', function (req, res) {   res.render('some-page', {     title: 'some-title'   }) })

on our frontpage, include query amount on 1 of crowdfunding campaigns, show current status. this: 

app.get('/frontpage', function (req, res) {    payment.filter({     projectname: 'testcampaign'   })    .sum("amount")   .execute().then(function (amountpledged) {      res.render('frontpage', {       amountpledged: amountpledged / 100,     })   }) })

problem is, structure makes hard have 2 (or more) queries current campaigns.

we need way have 2 (or more) different amountpledged on our frontpage @ same time (maybe amountpledged , amountpledgedsecond).

if want have two/more queries, can define two/more queries(which return promises) , use promise.all outputs. if problem think is.

you can below:

app.get('/frontpage', function (req, res) {      var p1 = payment.filter({       projectname: 'test1campaign'     })     .sum("amount")     .execute()     var p2 = payment.filter({       projectname: 'test1campaign'     })     .sum("amount")     .execute()      promise.all([p1, p2]).then(values => {         // values array of resolved value of respective promises        // can manipulate array desired value(like diving element 100)        res.render('frontpage', {           amountspledged: values,        })      });  })

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