HttpInterceptor.js

angular.module('nobrow.interceptors').config(function ($provide, $httpProvider) {
	$provide.factory('TokenHttpInterceptor',function ($http, $cacheFactory) {
		var cache = $cacheFactory('nobrow');

		return {
			request: function (config) {
				var token = cache.get('access_token');
				if (token) {
					config.headers.common.Authorization = 'Bearer '+token;

				// Else request it and cache it
				} else {
					$http.post('/api/authentication/token', {
						client_id     : 'iosapp',
						client_secret : 'tttttuuuuvvvvvv',
						username      : 'iosapp',
						password      : 'foobar',
						grant_type    : 'password',
					}).success(function (response) {
						cache.put('access_token', response.access_token);
						config.headers.common.Authorization = 'Bearer '+response.access_token;
					});
				}
			},
		};
	});

	// Add the interceptor to the $httpProvider.
	$httpProvider.interceptors.push('TokenHttpInterceptor');
});