BeelabRecaptcha2Bundle

1. Installation

Run from the terminal:

composer require beelab/recaptcha2-bundle

Flex automatically enables the bundle.

If Flex asks you to execute the recipe from google\recaptcha, answer "no". If you mistakenly answer "yes" instead, remove the service configuration created by that recipe, since it would be a duplication of the service defined by this bundle.

2. Configuration

Add the following lines to your configuration:

# config/packages/beelab_recaptcha2.yaml

beelab_recaptcha2:
    site_key: '%env(APP_RECAPTCHA_SITE_KEY)%'
    secret: '%env(APP_RECAPTCHA_SECRET)%'

You should define APP_RECAPTCHA_SITE_KEY and APP_RECAPTCHA_SECRET in your environment variables.

Since you cannot use a CAPTCHA in a test, you also should add the following lines in your test configuration:

# config/packages/test/beelab_recaptcha2.yaml

beelab_recaptcha2:
    enabled: false

If your PHP environment has restrictions about file_get_contents() making HTTP requests, you can use another RequestMethod from Google's Recaptcha library.

Currently, this bundle supports the default Post and CurlPost methods, and an additional method leveraging the Symfony HTTP Client. You can define it by adding in your configuration:

# config/packages/beelab_recaptcha2.yaml

beelab_recaptcha2:
    request_method: curl_post # or http_client

Otherwise, the default value post will be used.

If you want to use the http_client request method, you need to require symfony/http-client.

3. Usage

In your form, use Beelab\Recaptcha2Bundle\Form\Type\RecaptchaType form type, as any other Symfony form type. Example:

<?php
// src/Form/RegistrationType.php
namespace App\Form;

use Beelab\Recaptcha2Bundle\Form\Type\RecaptchaType;
use Beelab\Recaptcha2Bundle\Validator\Constraints\Recaptcha2;
use Symfony\Component\Form\AbstractType;
use Symfony\Component\Form\Extension\Core\Type\PasswordType;
use Symfony\Component\Form\FormBuilderInterface;
use Symfony\Component\OptionsResolver\OptionsResolver;

class RegistrationType extends AbstractType
{
    public function buildForm(FormBuilderInterface $builder, array $options): void
    {
        $builder
            ->add('email')
            ->add('name')
            ->add('plainPassword', PasswordType::class)
            ->add('captcha', RecaptchaType::class, [
                // You can use RecaptchaSubmitType
                // "groups" option is not mandatory
                'constraints' => new Recaptcha2(['groups' => ['create']]),
            ])
            // For Invisible Recaptcha
            /*
            ->add('captcha', RecaptchaSubmitType::class, [
                'label' => 'Save'
            ])
            */
        ;
    }
}

As you can see, you can pass an array of validation groups to Recaptcha2 constraint. For example, if you use it with registration in FOSUserBundle, you should use the "Registration" group. If you don't use groups, you should remove such an option.

In your template (likely in your main layout file), include a line like the following:

<script src="//www.google.com/recaptcha/api.js?hl=en"></script>

The hl parameter can be used to customize language. For example, you can use the following in a Twig template, to get the currently used language:

<script src="//www.google.com/recaptcha/api.js?hl={{ app.request.locale }}"></script>

4. Customization

If you want to customize the rendering of Recaptcha widget, just override beelab_recaptcha2_widget widget in one of your form themes. For example, suppose you want to display the compact version of the widget and suppose that you configured a _form_theme.html.twig file under form_themes option of twig configuration. You can add to your _form_theme.html.twig file the following lines:

{% block beelab_recaptcha2_widget -%}
    <div class="g-recaptcha" data-sitekey="{{ site_key }}" data-size="compact"></div>
{%- endblock %}