Problem with query in foreach loop in node js - mysql

Question

I am fetching results from a query and want to pass value from result on the next query. Here is my code. But it's not working, I tried setTimeOut function as well.
dbcon.query('SELECT ci_offers.*, ci_advertisers.id as merchant_id, ci_advertisers.full_name, ci_advertisers.phone, ci_advertisers.companylogo FROM ci_offers, ci_advertisers WHERE ci_offers.advertiser_id = ci_advertisers.id AND ci_offers.is_active=1', function(error, results, fields) {
if (error) throw error;
if (results.length > 0) {
var objectOffer;
var objCoin;
// async.forEachOf(results, function (dataElement, i, inner_callback){
results.forEach((val) => {
objectOffer = jsonParser(val);
var token_id = objectOffer.token_id;
var redeem_coin_grabbed = 0;
if (token_id > 0) {
dbcon.query('SELECT count(id) as coingrabbed FROM ci_grabcoin_details_for_game WHERE user_id = ? AND coin_id= 33', [user_id, token_id], function(error1, results1, fields1) {
if (error1) throw error1;
});
}
val["coingrabbed"] = redeem_coin_grabbed;
final.push(val);
});
}
res.send(final);
});

Answer 1

Please check if this works, Using this idea https://stackoverflow.com/a/7053992/9216722
let final = [];
dbcon.query('SELECT ci_offers.*, ci_advertisers.id as merchant_id, ci_advertisers.full_name, ci_advertisers.phone, ci_advertisers.companylogo FROM ci_offers, ci_advertisers WHERE ci_offers.advertiser_id = ci_advertisers.id AND ci_offers.is_active=1', function(error, results, fields) {
if (error) throw error;
if (results.length > 0) {
var objectOffer;
var objCoin;
// async.forEachOf(results, function (dataElement, i, inner_callback){
let done = false;
let count = 0;
const markDone = (err) => {
count++;
if ( !done && results.length === count) {
done = true;
res.send(final);
}
};
results.forEach((val) => {
objectOffer = jsonParser(val);
var token_id = objectOffer.token_id;
var redeem_coin_grabbed = 0;
if (token_id > 0) {
dbcon.query('SELECT count(id) as coingrabbed FROM ci_grabcoin_details_for_game WHERE user_id = ? AND coin_id= 33', [user_id, token_id], function(error1, results1, fields1) {
if (error1) throw error1;
});
}
val["coingrabbed"] = redeem_coin_grabbed;
final.push(val);
markDone();
});
}
});