Promises vs. callbacks

[pptp]

Hi! You are using a passing of callback for supporting asynchrony

For example:

save(callback)

It means this callback will be called after saving.

I guess it will be more easier to use Promises for these purposes. For example. We should type the following code:

Model.find(this.params.route.id, (err, model) => {
    this.respond(err || model);
});

So, using Promises we will be able to code as follows:

Model.find(this.params.route.id)
  .then(
    this.respond.bind(this),
    this.someErrorLogFunc.bind(this)
  )

As far as I know, Node supports Promises since the version 0.12. For earlier versions there are shims.

Are you going to use Promises in the Nodal in near future?

Thanks, Mike

[eperiou]

Q, promises worked really well for the basic crud operations, except for query. The .end() function somehow gets in the way. And I had some issues when trying to nest promises, because the Model's need to be reconverted back to objets.

[gugadev]

+1 to @pptp. Async functions (aka async/await) is done and will come with the next ECMAScript release. So, I think we can benefit a lot if we use promises and async/await.

const obj = await Model.find({ ... });