reflux-promise
v1.0.4
Published
Extension to reflux-core to use Promises.
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reflux-promise
Plugin for reflux-core to use Promises.
Here are the API docs for reflux-promise.
Installation
You can currently install the package as an npm package.
NPM
The following command installs reflux-promise
as an npm package:
npm install reflux-promise
Usage
To install promise functionality do the following in your application's bootstrapper:
import Reflux from "reflux";
import RefluxPromise from "reflux-promise";
// Uses the user agent's Promise implementation
Reflux.use(RefluxPromise(window.Promise));
// Uses Q
import Q from "q";
Reflux.use(RefluxPromise(Q.Promise));
// Uses bluebird
import bluebird from "bluebird";
Reflux.use(RefluxPromise(bluebird))
Extensions to Asynchronous actions
reflux-promise
extends asynchronous actions, i.e.:
// this creates 'load', 'load.completed' and 'load.failed'
var { load } = Reflux.createActions({
"load": {children: ["completed","failed"]}
});
A couple of helper methods are available to trigger the completed
and failed
child actions:
promise
listenAndPromise
The following are all equivalent:
// Using load above with a promise here called "apiPromise"
load.listen( function(arguments) {
apiPromise(arguments)
.then(load.completed)
.catch(load.failed);
});
// Can be shortened down to use `promise` like below
load.listen( function(arguments) {
load.promise( apiPromise(arguments) );
});
// Furthermore with `listenAndPromise`
load.listenAndPromise( apiPromise );
Asynchronous actions as Promises
PublisherMethods#triggerAsync
is modified so that asynchronous actions can be used as promises. The following example is for server-side rendering when you must await the successful (or failed) completion of an action before rendering. Suppose you had an action, makeGetRequest
, and a store, RequestStore
, to make an API request:
// Create async action with `completed` & `failed` children
var makeGetRequest = Reflux.createAction({ asyncResult: true });
var RequestStore = Reflux.createStore({
init: function() {
this.listenTo(makeRequest, 'onMakeRequest');
},
onMakeGetRequest: function(url) {
// Assume `request` is some HTTP library (e.g. superagent)
request.get(url, function(err, res) {
if (err) {
return makeGetRequest.failed(err);
}
makeGetRequest.completed(body);
})
}
});
You could use promises to make the request and either render or serve an error:
makeGetRequest.triggerAsync('/api/something').then(function(body) {
// Render the response body
}).catch(function(err) {
// Handle the API error object
});
Colophon
List of contributors is available on Github.
This project is licensed under BSD 3-Clause License. Copyright (c) 2014, Mikael Brassman.
For more information about the license for this particular project read the LICENSE.md file.