Inter-Widget Communication (IWC)

Common API Action: get()

Applies to All IWC APIs

Retrieves a Given Node

To retrieve a node stored in an API the get action is used on a reference to the node. The retrieval is asynchronous, and the response is passed through the resolution of the action's promise.

var ballRef = new iwc.data.Reference("/ball"); // generate the reference to the resource
var ballVal;

ballRef.get().then(function(value){
    ballVal = value;
});

The value of the promise resolution is the value assigned to the resource. The value can be any valid Javascript primitive or array.

If further detail is required on the IWC response, refer to the Comprehensive IWC Requests section.

Requesting a node that does not exist

Requesting a node that does not exist is not an valid action, this will result in an promise rejection with a containing the string 'noResource'.

Given that the resource /ball above does not exist in the IWC:

ballRef.get().catch(function(err){
    console.log("Could not retrieve. Reason: ", err);
});