$http_interceptor.js

angular.module('authApp', ['ngStorage', 'ngMessages'])
            .factory('httpInterceptor', function ($rootScope, $q, $log) {
                return {
                    'request'      : function (config) {
                        config.timeout = 1000;
                        // Данные которые нужно подмешать в каждый запрос
                        var data       = {
                            api_token: '__token__',
                            lang     : 'en'
                        };
                        config.data    = angular.toJson(angular.extend(angular.fromJson(config.data), data));
                        return config;
                    },
                    'response'     : function (config) {
                        return config;
                    },
                    'responseError': function (rejection) {
                        return $q.reject(rejection);
                    }
                };
            })
            .config(function ($httpProvider, $qProvider) {
                $httpProvider.interceptors.push('httpInterceptor');
                $qProvider.errorOnUnhandledRejections(false);
            })
            .controller('AuthCtrl', function ($scope, $http, $log, $localStorage, $location) {
                $scope.vm = {
                    email       : '',
                    password    : '',
                    error       : false,
                    errorMessage: '',
                    sign        : signIn
                };
                /**
                 * Sign in handler
                 * @param email
                 * @param password
                 */
                function signIn(email, password) {
                    $log.debug('LocalStorage -> ', $localStorage.userInfo);
                    var data = {
                        email   : email,
                        password: password
                    };
                    if ($scope.loginForm.$valid) {
                        $http.post('http://46.101.254.89/api/v1/user/login', data).then(function (response) {
                            // Удачный запрос
                            if (response.status === 200 && response.data.data.api_token) {
                                $localStorage.userInfo = angular.fromJson(response.data.data);
                                window.location.href   = '/admin/main';
                            }
                        })
                                .catch(function (response) {
                                    $log.error(response.data.message);
                                    $scope.vm.error = true;
                                    $scope.vm.errorMessage = response.data.message;
                                });
                    }
                }
            })