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How to Validate Recaptcha With Laravel And Vue.js?

5 minutes read

To validate reCAPTCHA with Laravel and Vue.js, you first need to set up reCAPTCHA on your website by registering your site with Google reCAPTCHA and obtaining your site key and secret key. Next, you need to add the reCAPTCHA script to your frontend Vue.js component where the reCAPTCHA will be displayed. In your Laravel backend, you need to create an API endpoint that will handle the validation of the reCAPTCHA response. This endpoint should verify the reCAPTCHA token provided by the frontend with the Google reCAPTCHA API using your secret key. Once the reCAPTCHA response is validated, you can continue with the desired action on your website. Make sure to handle any errors that may occur during the validation process.


How to integrate reCAPTCHA with Laravel?

To integrate reCAPTCHA with Laravel, follow these steps:

  1. Register your website with reCAPTCHA and obtain the Site key and Secret key from Google reCAPTCHA website.
  2. Install the Google reCAPTCHA package for Laravel by running the following command in your terminal: 
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composer require anhskohbo/no-captcha


  1. Update your .env file with the obtained keys:
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NOCAPTCHA_SECRET=your-secret-key
NOCAPTCHA_SITEKEY=your-site-key


  1. Add the reCAPTCHA script to your layout. Add the following script tag to the section of your layout file:
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<script src="https://www.google.com/recaptcha/api.js" async defer></script>


  1. Add reCAPTCHA fields to your form. Add the following code snippet to your form where you want the reCAPTCHA field to appear:
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<div class="g-recaptcha" data-sitekey="{{ env('NOCAPTCHA_SITEKEY') }}"></div>


  1. Verify reCAPTCHA response in your Laravel Controller. In your controller, add the following code snippet:
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$recaptcha = new ReCaptcha(env('NOCAPTCHA_SECRET'));
$response = $recaptcha->verify($request->input('g-recaptcha-response'), $request->ip());

if (!$response->isSuccess()) {
    // Handle invalid reCAPTCHA response here
}


  1. Implement reCAPTCHA validation in your form request. You can create a custom form request and implement the validation rules for reCAPTCHA:
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public function rules()
{
    return [
        'g-recaptcha-response' => 'required|recaptcha'
    ];
}


  1. Display reCAPTCHA errors in your form. Add the following code snippet in your form to display reCAPTCHA errors:
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@if ($errors->has('g-recaptcha-response'))
    <span class="text-danger">{{ $errors->first('g-recaptcha-response') }}</span>
@endif


That's it! You have successfully integrated reCAPTCHA with Laravel. Now, your form will be protected from spambots by using reCAPTCHA.


What is the reCAPTCHA secret key?

The reCAPTCHA secret key is a unique alphanumeric code provided by Google in order to enable the use of reCAPTCHA on a website. This secret key is used to verify the site’s interaction with Google’s reCAPTCHA service. The secret key should be kept confidential and not shared publicly to maintain security.


How to test reCAPTCHA functionality in a Laravel application?

  1. Set up reCAPTCHA in your Laravel application by following the official reCAPTCHA documentation (https://developers.google.com/recaptcha/intro). This involves registering your site with reCAPTCHA and obtaining the necessary site key and secret key.
  2. Once reCAPTCHA is set up in your Laravel application, create a form in your application that includes the reCAPTCHA widget.
  3. Create a route and controller method to handle the form submission. In the controller method, you can validate the reCAPTCHA response by making a POST request to the reCAPTCHA verify endpoint using the secret key and the user's response token.


Here's an example of how you can validate the reCAPTCHA response in your Laravel controller method:

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use Illuminate\Http\Request;
use GuzzleHttp\Client;

public function submitForm(Request $request)
{
    $token = $request->input('g-recaptcha-response');
    $client = new Client();

    $response = $client->post('https://www.google.com/recaptcha/api/siteverify', [
        'form_params' => [
            'secret' => env('RECAPTCHA_SECRET_KEY'),
            'response' => $token
        ]
    ]);

    $body = json_decode((string) $response->getBody());
    
    if ($body->success) {
        // reCAPTCHA validation successful, process form submission
        // e.g. save data to database, send email, etc.
    } else {
        // reCAPTCHA validation failed, redirect back with error message
        return redirect()->back()->with('error', 'reCAPTCHA validation failed. Please try again.');
    }
}


  1. To test the reCAPTCHA functionality, you can submit the form with valid and invalid reCAPTCHA responses. Use the following test scenarios:
  • Submit the form with a valid reCAPTCHA response: Verify that the form submission is successful.
  • Submit the form without a reCAPTCHA response: Verify that the form submission fails with an error message.
  • Submit the form with an invalid reCAPTCHA response: Verify that the form submission fails with an error message.


By following these steps and test scenarios, you can ensure that the reCAPTCHA functionality in your Laravel application is working correctly.


How to implement reCAPTCHA validation in Vue.js?

To implement reCAPTCHA validation in Vue.js, you can follow these steps:

  1. Sign up for a reCAPTCHA API key on the Google reCAPTCHA website: https://www.google.com/recaptcha/intro/v3.html
  2. Install the reCAPTCHA library in your Vue.js project by running the following command in your terminal: 
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npm install vue-recaptcha


  1. Import the reCAPTCHA component in your Vue component where you want to use it:
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import { VueRecaptcha } from 'vue-recaptcha'


  1. Add the reCAPTCHA component to your template:
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<vue-recaptcha
  ref="recaptcha"
  @verify="onVerify"
  @expired="onExpired"
  :sitekey="YOUR_RECAPTCHA_SITE_KEY"
></vue-recaptcha>


  1. Add methods in your Vue component to handle the verification and expiration events:
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methods: {
  onVerify(response) {
    // Handle successful verification
    console.log('reCAPTCHA verification successful:', response)
  },
  onExpired() {
    // Handle reCAPTCHA expiration
    console.log('reCAPTCHA has expired')
  }
}


  1. Set up reCAPTCHA on your backend server to verify the reCAPTCHA token received from the client.
  2. Make sure to replace YOUR_RECAPTCHA_SITE_KEY with your actual reCAPTCHA site key obtained in step 1.


By following these steps, you should be able to implement reCAPTCHA validation in your Vue.js project.


How to customize reCAPTCHA appearance in Laravel and Vue.js?

To customize the appearance of reCAPTCHA in your Laravel and Vue.js application, you can follow these steps:

  1. Get reCAPTCHA Site Key and Secret Key: Go to the reCAPTCHA website (https://www.google.com/recaptcha) and sign in with your Google account. Register a new site and get the site key and secret key.
  2. Add reCAPTCHA script to your Laravel application: Add the reCAPTCHA script to your Laravel application by adding the following code to your layout file (e.g., resources/views/layouts/app.blade.php):
  3. Add reCAPTCHA to your Vue.js component: Add the reCAPTCHA component to your Vue.js component by adding the following code to your Vue component file (e.g., resources/js/components/Recaptcha.vue):
  4. Implement reCAPTCHA in your Laravel controller: Add reCAPTCHA validation in your Laravel controller by using the google/recaptcha package: use GoogleRecaptchaMiddleware; public function store(Request $request) { $this->validate($request, [ 'g-recaptcha-response' => 'required|recaptcha' ]); // Process form data }
  5. Customize reCAPTCHA appearance: You can customize the appearance of reCAPTCHA by adding custom CSS to your application to style the reCAPTCHA widget according to your needs. You can modify the size, color, border, and other properties of the reCAPTCHA widget using CSS.


By following these steps, you can customize the appearance of reCAPTCHA in your Laravel and Vue.js application.

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