Promises?

[Tom Robinson]

I've noticed that certain methods return promises (Query's exec, Model's list), which is great, but others (Model's find, save, count) do not.

It would be really awesome if they did. Is this something that would be merged into the core, or should it be a plugin? Is anyone working on it?

[Jason Crawford]

I noticed that too. Separately, I discovered that Mongoose promises are not playing nicely with chai-as-promised right now (due to a bug in chai-as-promised: https://github.com/domenic/chai-as-promised/issues/30)

Because of this, I've started augmenting Mongoose in my own app with some methods that return Q promises. Here's a gist:

https://gist.github.com/jasoncrawford/5873309

Would be happy to contribute some of this to core if the maintainers like it, or to create a separate package if they don't but others find it useful.

BTW, there is also Mongoose-Q: https://github.com/iolo/mongoose-q. I didn't discover that until after I did some of my own workarounds, though, and haven't tried it.

-Jason

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On Wed, Jun 26, 2013 at 6:14 PM, Tom Robinson <tlrob...@gmail.com> wrote:

I've noticed that certain methods return promises (Query's exec, Model's list), which is great, but others (Model's find, save, count) do not.

It would be really awesome if they did. Is this something that would be merged into the core, or should it be a plugin? Is anyone working on it?

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[Aaron Heckmann]

On Wed, Jun 26, 2013 at 6:14 PM, Tom Robinson <tlrob...@gmail.com> wrote:

but others (Model's find, save, count) do not.

`count` and `find` are entry points for the query builder. If you need a promise, `exec()` the query.

`save` doesn't return a promise b/c of how pre/post hooks were implemented. Someday we'll change that. https://github.com/LearnBoost/mongoose/issues/1431

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Aaron

@aaronheckmann