AngularJS Login Controller and View

     

The Login Controller clears the user credentials on load which logs the user out if they were logged in.

The login function exposed by the controller calls the Authentication Service to authenticate the username and password entered into the view.

Controller 

(function () {
    'use strict';

    angular
        .module('app')
        .controller('LoginController', LoginController);

    LoginController.$inject = ['$location', 'AuthenticationService', 'FlashService'];
    function LoginController($location, AuthenticationService, FlashService) {
        var vm = this;

        vm.login = login;

        (function initController() {
            // reset login status
            AuthenticationService.ClearCredentials();
        })();

        function login() {
            vm.dataLoading = true;
            AuthenticationService.Login(vm.username, vm.password, function (response) {
                if (response.success) {
                    AuthenticationService.SetCredentials(vm.username, vm.password);
                    $location.path('/');
                } else {
                    FlashService.Error(response.message);
                    vm.dataLoading = false;
                }
            });
        };
    }

})();


<div class="col-md-6 col-md-offset-3">
    <h2>Login</h2>
    <form name="form" ng-submit="vm.login()" role="form">
        <div class="form-group" ng-class="{ 'has-error': form.username.$dirty && form.username.$error.required }">
            <label for="username">Username</label>
            <input type="text" name="username" id="username" class="form-control" ng-model="vm.username" required />
            <span ng-show="form.username.$dirty && form.username.$error.required" class="help-block">Username is required</span>
        </div>
        <div class="form-group" ng-class="{ 'has-error': form.password.$dirty && form.password.$error.required }">
            <label for="password">Password</label>
            <input type="password" name="password" id="password" class="form-control" ng-model="vm.password" required />
            <span ng-show="form.password.$dirty && form.password.$error.required" class="help-block">Password is required</span>
        </div>
        <div class="form-actions">
            <button type="submit" ng-disabled="form.$invalid || vm.dataLoading" class="btn btn-primary">Login</button>
            <img ng-if="vm.dataLoading" src="data:image/gif;base64,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" />
            <a href="#/register" class="btn btn-link">Register</a>
        </div>
    </form>
</div>
AngularJS Login Controller and View Dev2Tricks 5 of 5
      The Login Controller clears the user credentials on load which logs the user out if they were logged in. The login function exp...

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