Passing variables from Controller to View in AngularJS

Question

I'm using the Places library and the angular google places autocomplete module. The autocomplete functionality works perfectly, results are being displayed and selected upon click.

What I am trying to do now is to generate a map from the address once the user selects one of the results of the autocomplete.

I have the following function in my controller:

$scope.$on('g-places-autocomplete:select', function(event, place) {
    var geocoder = new google.maps.Geocoder();
    geocoder.geocode( { "address": place.name }, function(results, status) {
        if (status == google.maps.GeocoderStatus.OK && results.length > 0) {
            location = results[0].geometry.location,
                lat      = location.lat(),
                lng      = location.lng();

            var latlng = new google.maps.LatLng(lat,lng);
            var myOptions = {
                zoom: 8,
                center: latlng,
                mapTypeId: google.maps.MapTypeId.ROADMAP
            };
            var map = new google.maps.Map(document.getElementById("map_canvas"), myOptions);
        }
    });
});

It doesn't work, and I'm pretty sure that it is because it can't access the map_canvas element from the frontend (which in itself is inside a template view).

<div id="map_canvas" style="height:300px;"></div>

How could I link the two (or pass the lat and lng variables to the frontend) to make the map appear when the user selects a result?

EDIT

I made a Plunkr that illustrates the error. You'll see that once you select a location, it makes a redirect, in my case to http://localhost:9000/(1.650801,%2010.267894999999953), being the last part the latitude and longitude.

any chance you can add a plunkr? I'd be happy to take a look if I can edit some code... — panzhuli
– panzhuli, Commented Jul 8, 2016 at 18:36

panzhuli · Accepted Answer · 2016-07-08 21:19:20Z

Ok - I adjusted a few things, mostly stylistic for my clarity. I think you had some issues with variable declaration. This now loads a map object. I'll let you futz around with making it show data :-)

(function(){

  var app = angular.module('wopWop', ['google.places']);

  app.controller('MainController', function($scope){
        $scope.$on('g-places-autocomplete:select', function(event, place) {
          var loc, lat, lng, latlng, map, options,
              geocoder = new google.maps.Geocoder();

          geocoder.geocode( { "address": place.name }, function(results, status) {
                if (status == google.maps.GeocoderStatus.OK && results.length > 0) {
                    loc = results[0].geometry.location,
                    lat = loc.lat(),
                    lng = loc.lng();
                  }
            });
            latlng = new google.maps.LatLng(lat,lng);
            options = {
               zoom: 1,
               center: latlng,
               mapTypeId: google.maps.MapTypeId.ROADMAP
            };
            map = new google.maps.Map(document.getElementById("map_canvas"), options);
        });
  });
})();

Plunkr

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Passing variables from Controller to View in AngularJS

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