how to for...in loop in async.waterfall nodejs

Question

I have an object

var object = {
 name : null,
 id : 12,
 sys : [{name:'sys'}],
 info : 'string',
 some : [{name:'some'}],
 end : null
}

in nodejs I need to find in this object arrays and then stringfy and send to redis. So I search array

for(var key in object){
 if(Array.isArray(object[key])) {
  async.waterfall([
   function(callback) {
    // put finded item to redis, then from redis I need to get the key.
   },
   function(res, body, callback) {
    if(body) {
     object[key] = body // I need to replace array > key.
    }
   }
  ])
 }
}

But It's async, so in second function object[key] is not the same object[key] in previous function. For example in first function of waterfall I put object[key] = sys into redis, then I wait for the key, and in second function when I get the key object[key] = name. How can I past key to correct object?

Molda · Accepted Answer · 2016-09-14 11:31:22Z

2

I would try a bit different approach

var keys = [];
// get the keys that refers to array property
for(var key in object) { 
    if(Array.isArray(object[key])) keys.push(key);
}

async.forEachSeries(keys, function(key, next){
    // use object[key] 
    // Do the redis thing here and in it's callback function call next
    ........, function(){
        object[key] = body;
        next();
    });
});

Update Just realised there's no reason for series, forEach should work as well.

async.forEach(keys, function(key, next){
    // use object[key] 
    // Do the redis thing here and in it's callback function call next
    ........, function(){
        object[key] = body;
        next();
    });
}, function(err){ console.log('done'); });

edited Sep 14, 2016 at 11:31

answered Sep 14, 2016 at 10:47

Molda

5,7042 gold badges26 silver badges42 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

how to for...in loop in async.waterfall nodejs

1 Answer 1

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Related