CODEWITHSUNDEEP
node.jsmongoose
Damini Suthar
Damini Suthar

Reputation: 1492

Merge two response data in one - NodeJS

I have a NodeJS server that takes data from two different API's, and then I want to combine the result from both in one JSON response. Here I am sending you the code: 

EventModal.eventSearch(eventReq, type, async function (eventRes) {
       EventModal.getBoostEvents(eventReq, type, async function (eventBoostRes) {
                           res.json({
                                status: true,
                                data: eventRes,
                                eventBoostRes: eventBoostRes,
                            });
        });
  });

I want eventRes and eventBoostRes in one response in data.So how can I achieve that ?

eventRes and eventBoostRes are query result.

Thanks in advance.

Upvotes: 2

Views: 3370

Answers (2)

Zilvinas
Zilvinas

Reputation: 5578

Question not very clear.

However, it sounds like you are getting 2 arrays and you want to return a single array in the response. Quick ( and dirty ) way to do this is use array.concat( anotherArray ) function:

EventModal.eventSearch(eventReq, type, async function (eventRes) {
    EventModal.getBoostEvents(eventReq, type, async function (eventBoostRes) {
        res.json({
            status: true,
            data: eventRes.concat( eventBoostRes )
        });
    });
});

However, this will cause 2 queries to run in sync and is not optimal. You could optimise this to use promises and run 2 queries in parallel:

Promise.all([ // this will run in parallel
  EventModal.eventSearch(eventReq, type),
  EventModal.getBoostEvents( eventReq, type )
]).then( function onSuccess([ eventRes, eventBoostRes ]) {
  res.json({
    status: true,
    data: eventRes.concat( eventBoostRes )
  });
});

On the other hand; this should probably be handled at the query level.

Upvotes: 1

maxpaj
maxpaj

Reputation: 6831

You can combine them like this:

EventModal.eventSearch(eventReq, type, async function (eventRes) {
    EventModal.getBoostEvents(eventReq, type, async function (eventBoostRes) {
        res.json({
            status: true,
            data: { 
                eventRes, 
                eventBoostRes
            }
        });
    });
});

Upvotes: 2

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