How do I add google map in angular.js controller?

Question

So, I'm fairly new to angular and having hard time implementing google map API. I keep getting error:

Uncaught InvalidValueError: initialize is not a function.

I have this for the script tag:

<script src="https://maps.googleapis.com/maps/api/js?key=MY API KEY GOES HERE&callback=initialize"
    async defer></script>

But since my function initialize() is inside my controller, it doesn't recognize it. If I put the function outside of the controller, it does recognize it. But since I have all the data defined within the controller, I need this inside it. I'm not even sure what I'm supposed to ask but I just need to get the map to show up. Any ideas?

Solution

You could consider to load Google Maps API synchronously as demonstrated below

angular.module('myApp', [])
    .controller('MyCtrl', function($scope) {
      
       $scope.initialize = function() {
          var map = new google.maps.Map(document.getElementById('map_div'), {
             center: {lat: -34.397, lng: 150.644},
             zoom: 8
          });
       }    
       
       google.maps.event.addDomListener(window, 'load', $scope.initialize);   

    });

html, body {
        height: 100%;
        margin: 0;
        padding: 0;
}
#map_div {
        height: 480px;
}

 <script src="https://code.angularjs.org/1.3.15/angular.js"></script>
 <script src="https://maps.googleapis.com/maps/api/js" ></script>
 <div ng-app="myApp" ng-controller="MyCtrl">
   <div id="map_div"></div>
 </div>

Comments

[Vadim Gremyachev]

@AlexP, via query string, for example: https://maps.googleapis.com/maps/api/js?key=-YOUR-KEY-GOES-H‌​ERE-

[AlexP]

So I need to put ` <script src="maps.googleapis.com/maps/api/…> ` into the main page (the one that contains <div data-ng-view></div> ? Because I have still the same error described here even after implementing your solutin

[Vadim Gremyachev]

@AlexP, that's right, but without callback parameter, in my case google map is getting initialized once the page is loaded: google.maps.event.addDomListener(window, 'load', $scope.initialize);

[AlexP]

is it possible to refresh manually from Controller and ask to load it when I need it and not on page load? As I still have no effect :(

[AlexP]

UPD: it appeared only once and doesn't want to reappear after refresh of whole page

[AlexP]

Thanks. I have managed to achieve my goal by assigning new map every time I wanted to refresh it. $window.map=map; . Your comments helped me a lot!