AngularJS Authentication + RESTful API-Collection of common programming errors

I haven’t been using $resource because I’m just hand crafting my service calls for my application. That said I’ve handled login by having a service which depends on all the other services that get some sort of initialization data. When the login succeeds it triggers for initialization of all the services.

Within my controller scope I watch the loginServiceInformation and populate some properties of the model accordingly (to trigger the appropriate ng-show/hide). With regard to routing I’m using Angular’s built in routing and I simply have an ng-hide based on the loggedIn boolean shown here, it shows text to request login or else the div with the ng-view attribute (so if not logged in immediately after login you’re on the correct page, currently I load data for all views but I believe this could be more selective if necessary)

//Services
angular.module("loginModule.services", ["gardenModule.services",
                                        "surveyModule.services",
                                        "userModule.services",
                                        "cropModule.services"
                                        ]).service(
                                            'loginService',
                                            [   "$http",
                                                "$q",
                                                "gardenService",
                                                "surveyService",
                                                "userService",
                                                "cropService",
                                                function (  $http,
                                                            $q,
                                                            gardenService,
                                                            surveyService,
                                                            userService,
                                                            cropService) {

    var service = {
        loginInformation: {loggedIn:false, username: undefined, loginAttemptFailed:false, loggedInUser: {}, loadingData:false},

        getLoggedInUser:function(username, password)
        {
            service.loginInformation.loadingData = true;
            var deferred = $q.defer();

            $http.get("php/login/getLoggedInUser.php").success(function(data){
                service.loginInformation.loggedIn = true;
                service.loginInformation.loginAttemptFailed = false;
                service.loginInformation.loggedInUser = data;

                gardenService.initialize();
                surveyService.initialize();
                userService.initialize();
                cropService.initialize();

                service.loginInformation.loadingData = false;

                deferred.resolve(data);
            }).error(function(error) {
                service.loginInformation.loggedIn = false;
                deferred.reject(error);
            });

            return deferred.promise;
        },
        login:function(username, password)
        {
            var deferred = $q.defer();

            $http.post("php/login/login.php", {username:username, password:password}).success(function(data){
                service.loginInformation.loggedInUser = data;
                service.loginInformation.loggedIn = true;
                service.loginInformation.loginAttemptFailed = false;

                gardenService.initialize();
                surveyService.initialize();
                userService.initialize();
                cropService.initialize();

                deferred.resolve(data);
            }).error(function(error) {
                service.loginInformation.loggedInUser = {};
                service.loginInformation.loggedIn = false;
                service.loginInformation.loginAttemptFailed = true;
                deferred.reject(error);
            });

            return deferred.promise;
        },
        logout:function()
        {
            var deferred = $q.defer();

            $http.post("php/login/logout.php").then(function(data){
                service.loginInformation.loggedInUser = {};
                service.loginInformation.loggedIn = false;
                deferred.resolve(data);
            }, function(error) {
                service.loginInformation.loggedInUser = {};
                service.loginInformation.loggedIn = false;
                deferred.reject(error);
            });

            return deferred.promise;
        }
    };
    service.getLoggedInUser();
    return service;
}]);

//Controllers
angular.module("loginModule.controllers", ['loginModule.services']).controller("LoginCtrl", ["$scope", "$location", "loginService", function($scope, $location, loginService){

    $scope.loginModel = {
                        loadingData:true,
                        inputUsername: undefined,
                        inputPassword: undefined,
                        curLoginUrl:"partials/login/default.html",
                        loginFailed:false,
                        loginServiceInformation:{}
                        };

    $scope.login = function(username, password) {
        loginService.login(username,password).then(function(data){
            $scope.loginModel.curLoginUrl = "partials/login/logoutButton.html";
        });
    }
    $scope.logout = function(username, password) {
        loginService.logout().then(function(data){
            $scope.loginModel.curLoginUrl = "partials/login/default.html";
            $scope.loginModel.inputPassword = undefined;
            $scope.loginModel.inputUsername = undefined;
            $location.path("home");
        });
    }
    $scope.switchUser = function(username, password) {
        loginService.logout().then(function(data){
            $scope.loginModel.curLoginUrl = "partials/login/loginForm.html";
            $scope.loginModel.inputPassword = undefined;
            $scope.loginModel.inputUsername = undefined;
        });
    }
    $scope.showLoginForm = function() {
        $scope.loginModel.curLoginUrl = "partials/login/loginForm.html";
    }
    $scope.hideLoginForm = function() {
        $scope.loginModel.curLoginUrl = "partials/login/default.html";
    }

    $scope.$watch(function(){return loginService.loginInformation}, function(newVal) {
        $scope.loginModel.loginServiceInformation = newVal;
        if(newVal.loggedIn)
        {
            $scope.loginModel.curLoginUrl = "partials/login/logoutButton.html";
        }
    }, true);
}]);

angular.module("loginModule", ["loginModule.services", "loginModule.controllers"]);

The HTML

    
        
            

            

            Submit
            Cancel
        
        
            Login attempt failed
        
    

The Base HTML that uses the parts above to complete the picture:

        
            
            
            
                Please login to continue.
                


                This new version of this site is currently under construction.
                


                If you need the legacy site and database click here.
                
            
            
            
        
    

I have the login controller defined with an ng-controller higher up in the DOM so that I can change the body area of my page based on the loggedIn variable.

Note I haven’t implemented form validation here yet. Also admittedly still quite fresh to Angular so any pointers to things in this post are welcome. Although this doesn’t answer the question directly since it isn’t a RESTful based implementation I believe the same can be adapted to $resources since it’s built on top of $http calls.