问Angularjs - Safari中没有添加授权头

EN

app.factory('authInterceptor', ['$rootScope', '$q', '$window', function($rootScope, $q, $window){
    return {
        // This method adds the authentication token to each requests' header
        request: function(config){
            config.headers = config.headers || {};

            // add authentication token in header
            try {
                var token = $window.sessionStorage.token;
            } catch(err){
                token = undefined;
            }
            if(token !== undefined){
                config.headers.Authorization = 'Token ' + token;
            }
            return config;
        },
        response: function(response){
            if(response.status === 401){
                // user not authenticated
            }
            return response || $q.when(response);
        }
    };
}]);

app.factory('Coach', ['$resource', '$rootScope',
    function($resource, $rootScope){
        return $resource(
            $rootScope.api_url + 'api/coaches/:coachId/?format=json',
            {
                coachId: '@id'
            }
            ,
            {
                getByUserId: {method:'GET', url: $rootScope.api_url + 'api/coaches', isArray:false},
                update: {method:'PUT'}
            }
        );
}]);