EWZRecaptchaBundle

This bundle provides easy reCAPTCHA form field for Symfony.

A bridge for the Silex framework has been implemented too : Jump to documentation.

Installation

Step 1: Use composer and enable Bundle

To install EWZRecaptchaBundle with Composer just add the following to your composer.json file:

// composer.json
{
    // ...
    "require": {
        // ...
        "excelwebzone/recaptcha-bundle": "dev-master"
    }
}

NOTE: Please replace dev-master in the snippet above with the latest stable branch, for example 2.3.*.

Then, you can install the new dependencies by running Composer's update command from the directory where your composer.json file is located:

$ php composer.phar update

Now, Composer will automatically download all required files, and install them for you. All that is left to do is to update your AppKernel.php file, and register the new bundle:

<?php

// in AppKernel::registerBundles()
$bundles = array(
    // ...
    new EWZ\Bundle\RecaptchaBundle\EWZRecaptchaBundle(),
    // ...
);

Step2: Configure the bundle's

Add the following to your config file:

# app/config/config.yml

ewz_recaptcha:
    public_key:  here_is_your_public_key
    private_key: here_is_your_private_key
    locale_key:  %kernel.default_locale%

NOTE: This Bundle lets the client browser choose the secure https or unsecure http API.

You can easily disable reCAPTCHA (for example in a local or test environment):

# app/config/config.yml

ewz_recaptcha:
    // ...
    enabled: false

Or even load reCAPTCHA using Ajax:

# app/config/config.yml

ewz_recaptcha:
    // ...
    ajax: true

Congratulations! You're ready!

Basic Usage

When creating a new form class add the following line to create the field:

<?php

public function buildForm(FormBuilder $builder, array $options)
{
    // ...
    $builder->add('recaptcha', 'ewz_recaptcha');
    // ...
}

You can pass extra options to reCAPTCHA with the "attr > options" option:

<?php

public function buildForm(FormBuilder $builder, array $options)
{
    // ...
    $builder->add('recaptcha', 'ewz_recaptcha', array(
        'attr' => array(
            'options' => array(
                'theme' => 'light',
                'type'  => 'image'
            )
        )
    ));
    // ...
}

To validate the field use:

<?php

use EWZ\Bundle\RecaptchaBundle\Validator\Constraints as Recaptcha;

/**
 * @Recaptcha\True
 */
public $recaptcha;

Another method would consist to pass the validation constraints as an options of your FormType. This way, your data class contains only meaningful properties. If we take the example from above, the buildForm method would look like this. Please note that if you set mapped=>false then the annotation will not work. You have to also set constraints:

<?php

use EWZ\Bundle\RecaptchaBundle\Validator\Constraints\True;

public function buildForm(FormBuilder $builder, array $options)
{
    // ...
    $builder->add('recaptcha', 'ewz_recaptcha', array(
        'attr'        => array(
            'options' => array(
                'theme' => 'light',
                'type'  => 'image'
            )
        ),
        'mapped'      => false,
        'constraints' => array(
            new True()
        )
    ));
    // ...

The form template resource is now auto registered via an extension of the container. However, you can always implement your own custom form widget.

PHP:

<?php $view['form']->setTheme($form, array('EWZRecaptchaBundle:Form')) ?>

<?php echo $view['form']->widget($form['recaptcha'], array(
    'attr' => array(
        'options' => array(
            'theme' => 'light',
            'type'  => 'image'
        ),
    ),
)) ?>

Twig:

{% form_theme form 'EWZRecaptchaBundle:Form:ewz_recaptcha_widget.html.twig' %}

{{ form_widget(form.recaptcha, { 'attr': {
    'options' : {
        'theme': 'light',
        'type': 'image'
    },
} }) }}

If you are not using a form, you can still implement the reCAPTCHA field using JavaScript:

PHP:

<div id="recaptcha-container"></div>
<script type="text/javascript">
    $(document).ready(function() {
        $.getScript("<?php echo \EWZ\Bundle\RecaptchaBundle\Form\Type\RecaptchaType::RECAPTCHA_API_JS_SERVER ?>", function() {
            Recaptcha.create("<?php echo $form['recaptcha']->get('public_key') ?>", "recaptcha-container", {
                theme: "clean",
            });
        });
    };
</script>

Twig:

<div id="recaptcha-container"></div>
<script type="text/javascript">
    $(document).ready(function() {
        $.getScript("{{ constant('\\EWZ\\Bundle\\RecaptchaBundle\\Form\\Type\\RecaptchaType::RECAPTCHA_API_JS_SERVER') }}", function() {
            Recaptcha.create("{{ form.recaptcha.get('public_key') }}", "recaptcha-container", {
                theme: "clean"
            });
        });
    });
</script>

Customization

If you want to use a custom theme, put your chunk of code before setting the theme:

 <div id="recaptcha_widget">
   <div id="recaptcha_image"></div>
   <div class="recaptcha_only_if_incorrect_sol" style="color:red">Incorrect please try again</div>

   <span class="recaptcha_only_if_image">Enter the words above:</span>
   <span class="recaptcha_only_if_audio">Enter the numbers you hear:</span>

   <input type="text" id="recaptcha_response_field" name="recaptcha_response_field" />

   <div><a href="javascript:Recaptcha.reload()">Get another CAPTCHA</a></div>
   <div class="recaptcha_only_if_image"><a href="javascript:Recaptcha.switch_type('audio')">Get an audio CAPTCHA</a></div>
   <div class="recaptcha_only_if_audio"><a href="javascript:Recaptcha.switch_type('image')">Get an image CAPTCHA</a></div>

   <div><a href="javascript:Recaptcha.showhelp()">Help</a></div>
 </div>

{% form_theme form 'EWZRecaptchaBundle:Form:ewz_recaptcha_widget.html.twig' %}

{{ form_widget(form.recaptcha, { 'attr': {
    'options' : {
        'theme' : 'custom',
    },
} }) }}

Further reading: Customizing the Look and Feel of reCAPTCHA