laravel 8 captcha login

To implement a Laravel 8 captcha login, you'll need to use a captcha service to generate and validate captchas. In this example, we'll use Google reCAPTCHA, one of the most popular captcha services. Here's a step-by-step guide on how to set up a captcha login in Laravel 8:

Step 1: Install Laravel 8

If you haven't already set up a Laravel 8 project, start by creating a new project using Composer:

```bash

composer create-project laravel/laravel captcha-login

cd captcha-login

```

Step 2: Set up Google reCAPTCHA

Go to the Google reCAPTCHA website (https://www.google.com/recaptcha) and sign in with your Google account. Register a new site to get the necessary keys.

Step 3: Install the necessary packages

We need to install the `guzzlehttp/guzzle` package to handle HTTP requests and `anhskohbo/no-captcha` package to integrate Google reCAPTCHA with Laravel.

```bash

composer require guzzlehttp/guzzle

composer require anhskohbo/no-captcha

```

Step 4: Configuration

In your `.env` file, add the following variables with your Google reCAPTCHA keys:

```dotenv

RECAPTCHA_SITE_KEY=your_site_key_here

RECAPTCHA_SECRET_KEY=your_secret_key_here

```

Step 5: Create Middleware

Let's create a middleware that will handle the captcha verification before allowing users to log in.

```bash

php artisan make:middleware VerifyCaptcha

```

Open the generated `VerifyCaptcha.php` middleware file in `app/Http/Middleware` and modify it as follows:

```php

namespace App\Http\Middleware;

use Closure;

use Illuminate\Http\Request;

use NoCaptcha;

class VerifyCaptcha

{

public function handle(Request $request, Closure $next)

{

$response = $request->input('g-recaptcha-response');

if (!empty($response)) {

$captcha = NoCaptcha::verifyResponse($response);

if (!$captcha->isSuccess()) {

return redirect()->back()->withErrors(['captcha' => 'Failed to verify captcha. Please try again.']);

}

} else {

return redirect()->back()->withErrors(['captcha' => 'Please complete the captcha to proceed.']);

}

return $next($request);

}

}

```

Step 6: Update Kernel.php

Next, open the `app/Http/Kernel.php` file and add the middleware to the `$routeMiddleware` array:

```php

protected $routeMiddleware = [

// other middleware

'captcha' => \App\Http\Middleware\VerifyCaptcha::class,

];

```

Step 7: Modify the Login Controller

Open the `LoginController.php` file located at `app/Http/Controllers/Auth/LoginController.php`. Update the `__construct` method to include the `captcha` middleware:

```php

public function __construct()

{

$this->middleware('guest')->except('logout');

$this->middleware('captcha')->only('login');

}

```

Step 8: Update Login Blade View

In your login view, include the Google reCAPTCHA widget.

```blade

```

Step 9: Update Login Route

Finally, make sure your login route in `web.php` includes the `captcha` middleware:

```php

Route::post('login', 'App\Http\Controllers\Auth\LoginController@login')->middleware('captcha');

```

That's it! Now, your Laravel 8 application should have a captcha login feature using Google reCAPTCHA. Users will need to complete the captcha verification before logging in, adding an additional layer of security to your login process.