$resource service and controller - angularjs

Question

I have a code like this:
angular.module( 'APPLICATION', ['ngResource'] )
.service( 'Service', ['$resource', function ($resource) {
var Model = $resource(
'/:node/:key.json',
{ node: '#node', key: '#key' },
{
query: {method: 'GET', isArray: false}
}
);
var responseMessage, responseData;
var successHandler = function (resource) {
responseMessage = { success: resource.result.message };
responseData = resource.result.data;
};
var errorHandler = function (resource) {
responseMessage = { error: resource.headers().message };
};
this.model = null;
this.fetch1 = function () {
var result = Model.query( {node: this.model.node} );
return result;
};
this.fetch2 = function () {
var result = Model.query( {node: this.model.node} );
result.$promise.then( successHandler, errorHandler );
return responseData;
};
}] )
.controller( 'Controller', ['$scope', 'Service', function ($scope, Service) {
Service.model = $scope.model;
// works
var response = Service.fetch1();
response.$promise.then( function (response) {
$scope.items = response.result.data;
} );
// doesn't work
$scope.items = Service.fetch2();
}] );
How can I make Service.fetch2 work?
I want to process data inside of the Service, not in the Controller, but I can't figure out how to send the data to the Controller once it's processed...

Answer 1

Since your fetch2 call also is async in nature you cannot do a direct assignment, as the results may not be available at that time. Return a promise from fetch2 as well. Like this
this.fetch2 = function () {
var result = Model.query( {node: this.model.node} );
return result.$promise.then( successHandler, errorHandler );
};
var successHandler = function (resource) {
responseMessage = { success: resource.result.message };
responseData = resource.result.data;
return responseData;
};
var errorHandler = function (resource) {
responseMessage = { error: resource.headers().message };
return responseMessage;
};
In your controller
Service.fetch2().then(function(data) {
$scope.items=data;
});