directive定义当中link函数里面有些局部变量 在外层的controller当中需要使用

现在问题是这个link当中的map怎么让外面看到？

比如下面的controller当中怎么才能获取'google-map'的link函数当中定义的变量？

update:

找到方法了 scope里面加一个变量 map: "="就可以了

<div ng-controller="Demo as d">
    <google-map></google-map>
</div>

(function () {
    var app = angular.module('googleMap', []);

    app.factory('mapsInit', function ($window, $q) {
        
        var asyncUrl = "https://maps.googleapis.com/maps/api/js?callback=",
          mapsDefer = $q.defer();

        //Callback function - resolving promise after maps successfully loaded
        $window.googleMapsInitialized = mapsDefer.resolve; // removed ()

        //Async loader
        var asyncLoad = function (asyncUrl, callbackName) {
            var script = document.createElement('script');
            script.src = asyncUrl + callbackName;
            document.body.appendChild(script);
        };

        //Start loading google maps
        asyncLoad(asyncUrl, 'googleMapsInitialized');

        //Usage: Initializer.mapsInitialized.then(callback)
        return {
            mapsInitialized: mapsDefer.promise
        };
    })

    app.directive('googleMap', function (mapsInit) {
        return {
            restrict: 'E',
            scope: {
                mapId: '@id', // map ID
                lat: '@',     // latitude
                long: '@',     // longitude
                map: '=' //是一个binding attribute 会把外层model的参数update
            },
            link: function (scope) {
                // Simple check
                console.log(scope.mapId, scope.lat, scope.long);
                // Check if latitude and longitude are specified
                if (angular.isDefined(scope.lat) && angular.isDefined(scope.long)) {

                    // Initialize the map
                    var initialize = function () {
                        var location = new google.maps.LatLng(scope.lat, scope.long);
                        var mapOptions = {
                            zoom: 12,
                            center: location
                        };

                        //我想从外部访问这个map变量 怎么把它传递出去？
                        var map = new google.maps.Map(document.getElementById(scope.mapId), mapOptions);
                        //map.addListener('bounds_changed', mapBoundChanged);
                        //gMap = map;
                    };
                    // Loads google map script
                    mapsInit.mapsInitialized.then(function () {
                        // Promised resolved
                        initialize();
                    }, function () {
                        // Promise rejected
                    });
                }
            }
        };
    });

})();

--
修改:facilitator FROM 130.102.82.*
FROM 130.102.82.*