Return value from Angular Service - angularjs

Question

Hi I do not understand why always I get empty array from this service when is invoked by my controller
angular
.module('dimecuba.services', [])
.factory('Contacts', function($cordovaContacts, $ionicPlatform) {
var contactsFound = [];
var contacts = {
all:function(){
var options = {};
options.multiple = true;
options.filter = "";
//options.fields = ['displayName'];
options.hasPhoneNumber = true;
$ionicPlatform.ready(function(){
$cordovaContacts.find(options).then(
function(allContacts){
angular.forEach(allContacts, function(contact, key) {
contactsFound.push(contact);
});
console.log("Contacts Found:" + JSON.stringify(contactsFound));
return contactsFound;
},
function(contactError){
console.log('Error');
}
);
});
}
}; //end contacts
console.log("Contacts:"+JSON.stringify(contacts));
return contacts;
});

Answer 1

Use return to chain promises. A return statement needs to be included at each level of nesting.
app.factory('Contacts', function($cordovaContacts, $ionicPlatform) {
var contacts = {
all:function(){
var options = {};
options.multiple = true;
options.filter = "";
options.hasPhoneNumber = true;
//return promise
return $ionicPlatform.ready().then(function() {
//return promise to chain
return $cordovaContacts.find(options)
}).then(function(allContacts){
var contactsFound = [];
angular.forEach(allContacts, function(contact, key) {
contactsFound.push(contact);
});
//return to chain data
return contactsFound;
}).catch(function(contactError){
console.log('Error');
//throw to chain error
throw contactError;
});
}
}; //end contacts
return contacts;
});
In the controller, use the promise returned.
app.controller("myCtrl", function($scope,Contacts) {
var contactsPromise = Contacts.all();
contactsPromise.then( function(contactsFound) {
$scope.contactsFound = contactsFound;
});
});