How to use Laravel with Firebase authentication using REST API basic integration #6

Learn how to use Laravel with Firebase authentication using REST API basic integration. In this chapter, we will learn how to setup authentication in Firebase and its usage in the Laravel using the Firebase Admin PHP SDK.

First of all, click on "Authentication" and open the "Users" tab, click on the "Set up sign-in method". It will redirect to Sign-in method tab.

Then click on status "Disabled" on "Email/Password" row and "Enable" this option. Keep the "Email link (passwordless sign-in)" is disable. We will cover in next chapters.

Click on "Save" and make this option "Enabled".

This will give you option to add users in "Users" tab. Now if you add a user, it will provide a unique user id and can link it with any collection in the Cloud Firestore database by inserting this uid in the fields and can add rules to access by uid.

Now lets setup the Email Templates like Email address verification Password reset. Click on "Templates" tab. You can modify the Project public-facing name to your project name and Project support email to show to the users. Now here we have a limitation, you cannot modify the template for the security purpose. You can add only a continue URL to redirect back to your site.

Email verification mail would like some how as below

So your Firebase Authentication is successfully setup. Now lets move towards its usage in the Laravel.

 try {  
     $email = 'youremailaddress@gmail.com';  
     $password = 'yourpassword';  
     $authRef = app('firebase.auth')->createUser([  
        'email' => $email,  
       'password' => $password  
     ]);  
    $actionCodeSettings = [  
         'continueUrl' => 'www.yoursite.com/home'  
    ];  
     app('firebase.auth')->sendEmailVerificationLink($email, $actionCodeSettings);  
     echo $authRef->uid; //This is unique id of inserted user.  
 }   
 catch (\Kreait\Firebase\Exception\Auth\EmailExists $ex) {  
   echo 'email already exists';  
 }  

Here you have handle all validation by handling exception like if user has been already created by the email.

And you can add data in the database and map this uid for storing further details like address, etc.

 $detailRef = app('firebase.firestore')->collection('UserDetail')->newDocument(); $detailRef ->set([  
     'uid' => $authRef->uid,  
     'address' => 'Street 123'  
 ]);  

In the above code, lets get into the details of actionCodeSettings.

continueUrl = this url is site to your site. But the domain verification is to be done.

And there are many handleCodeInApp, androidInstallApp etc. for more option.

Now lets come to login page and method after user has verified the email.

 try {  
     $email = $request->email;  
     $password = $request->password;  
     $user = app('firebase.auth')->verifyPassword($email,$password);  
     if($user->emailVerified) {  
          echo 'login success';  
     } else {  
         echo 'email verification pending';  
     }  
 } catch (\Kreait\Firebase\Exception\Auth\InvalidPassword $ex) {  
     echo 'Invalid password';  
 }  

Invalid password has to be handles through exception catch. And you check email verified as mentioned above.

You can similar use the password reset option. 

 try {  
   $actionCodeSettings = [  
      'continueUrl' => 'www.yoursite.com/login'  
   ];  
   app('firebase.auth')->sendPasswordResetLink($email, $actionCodeSettings);  
   echo 'mail sent';  
 }  
 catch (\Kreait\Firebase\Auth\SendActionLink\FailedToSendActionLink $ex) {  
      echo 'email not exists';  
 }  

Hope you understand the basic login flow with email/password signin method. We will cover all signin method in upcoming chapters. Please let us know in comments if you have any doubt or want a new chapter on some topic of Firebase.