Angular.js - callback needed using service

Question

I have a setup with a service to fetch a list of items, a controller to do something to that list, and a view to iterate through and display each item.

Thing is, my items are links to RSS feeds and in the controller I want to parse through these RSS feeds and set up the model data for the view to handle.

Now, there are some more modifications to the modelling to be done (I need to model the actual RSS feed content), but my first problem is that the data fetched by the service is not modifiable in my controller (since the call hasn't finished, at the time I try to access it, I guess). Basically it's just an empty array if i write it to the console.

So I'd need to know how to trigger the data operations in the controller once the service call has finished.

Thanks!! // Joakim

Service code:

angular.module('itemfeedServices', ['ngResource']).
factory('Item', function($resource){
    return $resource('items/:itemId.json', {}, {
        query: {method:'GET', params:{itemId:'items'}, isArray:true}
    });
 });

Controller code:

function ItemListCtrl($scope, Item) {
  $scope.items = Item.query();
  console.log($scope.items); // gives []
 }

mael · Accepted Answer · 2013-07-15 16:28:30Z

2

Basically, I think you want a callback? The documentation says:

The action methods on the class object or instance object can be invoked with the following parameters:

    HTTP GET "class" actions: Resource.action([parameters], [success], [error])
    non-GET "class" actions: Resource.action([parameters], postData, [success], [error])
    non-GET instance actions: instance.$action([parameters], [success], [error])

Here

So, using:

Item.query({}, function() {
//you callback
});

should work.

answered Jul 15, 2013 at 16:28

mael

2,2641 gold badge19 silver badges20 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

joakimnorberg Over a year ago

That did work. Will read documentation better next time. :) Thanks!

bluehallu · Accepted Answer · 2014-02-18 09:54:17Z

1

While callbacks will work, it's not the Angular way to do it. Check out the promises pattern and Angular own implementation of it, $q

answered Feb 18, 2014 at 9:54

bluehallu

10.3k9 gold badges47 silver badges64 bronze badges

1 Comment

marce Over a year ago

Can you point at or give an example/tutorial of using a ngResource service without callbacks but using the promises pattern?

Collectives™ on Stack Overflow

Angular.js - callback needed using service

2 Answers 2

1 Comment

1 Comment

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

1 Comment

1 Comment

Your Answer

Sign up or log in

Post as a guest

Related