I making multiple mongoDB queries in loop. and want to send the all results as one data array.But when I simple use the return for send the data it simply return undefined and do not wait for results of all DB request. I also tried to use q.moulde but same issue.
What would be the idiomatic way to do something like a while loop with promises. So:
I have a javascript class, and each method returns a Q promise. I want to know why this is undefined in method2 and method3. Is there a more correct way to write this code? function MyClass(opts){ this.options = opts; return this.method1() .then(this.method2) .then(this.method3); } MyClass.prototype.method1 = function(){ // …q stuff… console.log(this.options); // logs "opts" object … Read more
Non-Promisified async interfaces – .promisify() and .promisifyAll() are incredibly useful to handle all those async interfaces that still require plain callbacks and don’t yet return promises – one line of code creates a promisified version of an entire interface.
In my code, based on a specific condition, I would like to skip to the done function, irrespective of all the then functions.
I am having trouble passing all arguments. My promise callback only receives one instead of three:
I have seen Chaining an arbitrary number of promises in Q ; my question is different.
I’m studying the promises pattern and using kriskowal’s q for node.js,
Here are some simple questions based on behaviour I noticed in the following example running in node:
How do I write a method that limits Q promise concurrency?
