angularJS service object property undefined - angularjs

Question

I have a controller using a service chartFactory.chartData property to give some data to view. The problem is that the factory is returning the object before the chartFactory.chartData function has time to return the data from the back end, so the property is undefined.
I understand this is an async issue, but I'm not sure how to handle it between a factory and a controller.
chartFactory.js
app.factory('chartFactory', ['$http', '$interval', function($http, $interval) {
var service = {
get chartData() {
$http.get('/portfolio/get-chart-data')
.then(function(response) {
console.log(response.data, 'response data') //logging after undefined message
return response.data
})
}
}
return service
}])
chartController.js
app.controller('chartCtrl', function($scope, $timeout, $http, chartFactory) {
$scope.chartData = chartFactory
$scope.height_chart = window.innerHeight * 0.4
$scope.labels = chartFactory.chartData[0]; //undefined
$scope.series = chartFactory.chartData['GDAX Value']; //undefined
$scope.data = [
chartFactory.chartData[1] //undefined
];
$scope.onClick = function(points, evt) {
console.log(points, evt);
};
$scope.datasetOverride = [{
yAxisID: 'y-axis-1'
}];
$scope.options = {
responsive: true,
maintainAspectRatio: false,
scales: {
yAxes: [{
id: 'y-axis-1',
// type: 'linear',
display: true,
position: 'left',
ticks: {
beginAtZero: false,
callback: function(value, index, values) {
if (parseInt(value) >= 1000) {
return '$' + value.toString().replace(/\B(?=(\d{3})+(?!\d))/g, ",");
} else {
return '$' + value;
}
}
}
}],
xAxes: [{
display: false
}]
}
}
})

Answer 1

Change your controller as,
chartFactory.chartData().then(function(response) {
$scope.labels = getchartData .response.data[0];
$scope.series = chartFactory.response.data['GDAX Value'];
});