$resource doesn't get array from json

Question

I would like to get array object from server (java). Below there is angular method :

service.getAthors = function(){
        var deferred = $q.defer();

        var authors = authorResource.query(function() {
            console.log(authors);
        }).$promise.then( function(){
                deferred.resolve( "Adding book have gone correctly." );
            }, function(){
                deferred.reject("Error during adding new book.");
            });
    }

In console firebug's i see this: [{"author_id":7,"author":"Dan Brown"}] but authors array is empty. Can you tell me why ?

Answer 1

You need to assign authors to the returned server data.

authorResource.query(function() {
        console.log(authors);
    }).$promise.then( function(data){
            authors = data;
            deferred.resolve( "Adding book have gone correctly." );
        }, function(){
            deferred.reject("Error during adding new book.");
        });

Answer 2

{ 'get':    {method:'GET'},
  'save':   {method:'POST'},
  'query':  {method:'GET', isArray:true},
  'remove': {method:'DELETE'},
  'delete': {method:'DELETE'} };

authorResource.query({isArray:true},function() {
        console.log(authors);
    }).$promise.then( function(data){
            authors = data;
            deferred.resolve( "Adding book have gone correctly." );
        }, function(){
            deferred.reject("Error during adding new book.");
        });

you are using query method use isArray:true

see the reference https://docs.angularjs.org/api/ngResource/service/ $resource

Answer 3

Angular $resource has a little inconsistence when an action with isArray:true exist.

If you call the resource class and not the instance, works of different ways, example:

myModule.controller('controller',function(MyResource){
  //In this MyResource is the class
  var myElement = MyResource.get({id:1});  //myElement is an instance

  var array = MyResource.query(); //When the query response the array gonna be filled

  var arrayFromMyElement = myElement.query() // Return a promise not a array and the data of the promise gonna get the array

  arrayFromMyElement.then(function(data){
    //Data is the array
  })
});

This is observable in the $resource source code:

https://github.com/angular/angular.js/blob/master/src/ngResource/resource.js#L627-L638