How to user a resolver to check if a user is signed in

app.js

'use strict';

angular.module('instafacApp', [
  'ngCookies',
  'ngResource',
  'ngSanitize',
  'ngRoute'
])
  .config(function ($routeProvider, $httpProvider){

    $routeProvider
      .when('/me', {
        templateUrl: 'views/user/dashboard/dashboard.html',
        controller: 'DashboardCtrl',
        resolve: {
          resolveData: function(Resolver){
            return Resolver();
          }
        }        
      })
      .otherwise({
        redirectTo: '/'
      });

    var interceptor = ['$rootScope', '$location', '$q',
      function($scope, $location, $q) {
        var success = function(resp) {
          return resp;
        },
        err = function(resp) {
          if (resp.status === 401) {
            var d = $q.defer();
            $scope.$broadcast('event:unauthorized');

            return d.promise;
          }

          return $q.reject(resp);
        };

        return function(promise) {
          return promise.then(success, err);
        };
      }
    ];

    $httpProvider.responseInterceptors.push(interceptor);

  })
  .run(function($rootScope, $http, $location) {

    $rootScope.$on('event:unauthorized', function(evt) {
      $location.path('/login');
    });

  });

resolve.js

angular.module('myApp')
  .factory('Resolver', function ($http, $q) {
    return function () {
      var deferred = $q.defer();

      $http({
        url: '/api/v1/auth/current_user',
        method: 'GET'
      }).then(function (response) {
        deferred.resolve(response.success);
      });

      return deferred.promise;
    };

  });
  
  
  

sessions_controller.rb

module Api
  module V1

    class Auth::SessionsController < Devise::SessionsController

      def get_current_user
        if user_signed_in?
          render status: 200,
            json: {
              success: true,
              info: "Current user", 
              data: {
                token: current_user.authentication_token,
                email: current_user.email
              }
            }
        else
          render status: 401,
            json: {
              success: false, 
              info: "", 
              data: {}
            }
        end
      end

    end
  end
end