Utilizing Angularfire OAuth for Facebook authentication in login strategy

Question

Utilizing Angularfire OAuth for Facebook authentication in login strategy

After successfully implementing the code below in the loginCtrl controller and login.html, I encountered some issues with setting up the workflow correctly. My goal is to achieve something like this:

//check if the current $scope has authData
 //if so redirect to (or render) home.html
//if not stay on the login page.

I am new to Angular and still trying to figure things out. In Node.js with Express, it was clear to me that I just needed to render or redirect when the received data was good. But handling this in Angular seems confusing.

Javascript

.controller('loginCtrl', function ($scope, Auth, Login) {


  $scope.login = function() {
    Auth.$authWithOAuthPopup("facebook")
        .then(function(authData){
          console.log(authData);
        })
        .catch(function(err){
          if(err) {
           console.log("Authentication failed!!", err);
          }
        })
  };
})

.factory('Auth', function($firebaseAuth){
  var usersRef = new Firebase("https://dazzling-heat-4971.firebaseio.com/users");
  return $firebaseAuth(usersRef);
})

HTML

<ion-content class="padding loginbox">
  <div ng-hide="!authData" ng-click="login('facebook')">  
    <!-- <a ui-sref="home" ng-if="verifyLogin()"> -->
      <button class="button button-positive icon ion-social-facebook">
        Login with Facebook
      </button>
    <!-- </a> -->
  </div>
</ion-content>

javascript angularjs firebase ionic-framework angularfire

Answer 1

Answer №1

One of the great features of AngularFire is its built-in support for simplifying routing and authentication.

Instead of having to constantly check for an authenticated user in your controller, you have the ability to simply inject the currently authenticated user.

This eliminates the need for any cumbersome if else checks in your controller or view, making the code much cleaner and easier to maintain.

You can achieve this by injecting the user through the resolve() function in the router. If you're working with Ionic, remember that it uses ui-router. After successfully logging in the user, don't forget to call $state.$go() with the appropriate route name. This will smoothly transition to the desired view and trigger the associated controller.

The code style shown below conforms to the Angular Style Guide. While it may look different at first glance, it's just another approach to writing Angular code - so don't get too hung up on the details.

angular.module('app', ['firebase'])
   .run(ApplicationRunSettings)
   .config(ApplicationConfig)
   .controller('loginCtrl', LoginCtrl);

// The authData parameter is injected from the router
function UserProfileCtrl($scope, authData) {
  $scope.user = authData;
}

function LoginCtrl($scope, Auth) {
   Auth.$authWithOAuthPopup("facebook")
    .then(function(authData){
      $state.go('userProfile');
    })
    .catch(function(err){
      if(err) {
       console.log("Authentication failed!!", err);
      }
    })
}

// Configure the router to resolve authenticated users
function ApplicationConfig($stateConfig) {
   $stateProvider
     .state("home", {
       controller: "UserProfileCtrl",
       templateUrl: "views/userProfile.html",
       resolve: {
        // Controller will only load once $waitForAuth resolves
        "currentAuth": ["Auth", function(Auth) {
        // $waitForAuth returns a promise, allowing the resolve to wait for completion
           return Auth.$waitForAuth();
        }]
      }
   }
}

// In case of an error, redirect to the home view
function ApplicationRunSettings($rootScope, $state) {
  $rootScope.$on("$stateChangeError", function(event) {
  // If there is an error thrown when the $requireAuth promise fails, redirect back to the home page
  if (error === "AUTH_REQUIRED") {
    $state.go("home");
  }
}

For more information on authenticating with routers using AngularFire, be sure to check out the AngularFire documentation.

Answer 2

One of the great features of AngularFire is its built-in support for simplifying routing and authentication.

Instead of having to constantly check for an authenticated user in your controller, you have the ability to simply inject the currently authenticated user.

This eliminates the need for any cumbersome if else checks in your controller or view, making the code much cleaner and easier to maintain.

You can achieve this by injecting the user through the resolve() function in the router. If you're working with Ionic, remember that it uses ui-router. After successfully logging in the user, don't forget to call $state.$go() with the appropriate route name. This will smoothly transition to the desired view and trigger the associated controller.

The code style shown below conforms to the Angular Style Guide. While it may look different at first glance, it's just another approach to writing Angular code - so don't get too hung up on the details.

angular.module('app', ['firebase'])
   .run(ApplicationRunSettings)
   .config(ApplicationConfig)
   .controller('loginCtrl', LoginCtrl);

// The authData parameter is injected from the router
function UserProfileCtrl($scope, authData) {
  $scope.user = authData;
}

function LoginCtrl($scope, Auth) {
   Auth.$authWithOAuthPopup("facebook")
    .then(function(authData){
      $state.go('userProfile');
    })
    .catch(function(err){
      if(err) {
       console.log("Authentication failed!!", err);
      }
    })
}

// Configure the router to resolve authenticated users
function ApplicationConfig($stateConfig) {
   $stateProvider
     .state("home", {
       controller: "UserProfileCtrl",
       templateUrl: "views/userProfile.html",
       resolve: {
        // Controller will only load once $waitForAuth resolves
        "currentAuth": ["Auth", function(Auth) {
        // $waitForAuth returns a promise, allowing the resolve to wait for completion
           return Auth.$waitForAuth();
        }]
      }
   }
}

// In case of an error, redirect to the home view
function ApplicationRunSettings($rootScope, $state) {
  $rootScope.$on("$stateChangeError", function(event) {
  // If there is an error thrown when the $requireAuth promise fails, redirect back to the home page
  if (error === "AUTH_REQUIRED") {
    $state.go("home");
  }
}

For more information on authenticating with routers using AngularFire, be sure to check out the AngularFire documentation.

Utilizing Angularfire OAuth for Facebook authentication in login strategy

Answer №1

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