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README.md

ContactFormBundle

ContactFormBundle does the following:

  • Display a form to contact a website,
  • Pre-fills data if user is logged in,
  • Dispatch events to modify form/email,
  • Sends the email via c975LEmailBundle as c975LEmailBundle provides the possibility to save emails in a database, there is an option to NOT do so via this Bundle,
  • Sends a copy to the email provided,
  • Allows the possibility to send email to other user, related to your app specification, i.e. contact another user without giving its email. This is achieved via event dispatch (see below),
  • Provides honeypot and delay before real submission, to avoid spam and not need to request captcha (see below),

ContactFormBundle dedicated web page.

ContactFormBundle API documentation.

Bundle installation

Step 1: Download the Bundle

v3.x works with Symfony 4.x. Use v2.x for Symfony 3.x Use Composer to install the library

    composer require c975l/contactform-bundle

Step 2: Configure the Bundle

Check dependencies for their configuration:

v2.0+ of c975LContactFormBundle uses c975L/ConfigBundle to manage configuration parameters. Use the Route "/contact/config" with the proper user role to modify them.

Step 3: Declaration of Twig\Extensions\TextExtension

You have to allow Twig\Extensions\TextExtension in your /config/pacakes/twig_extensions.yaml.

Step 4: Enable the Routes

Then, enable the routes by adding them to the /config/routes.yaml file of your project:

c975_l_contact_form:
    resource: "@c975LContactFormBundle/Controller/"
    type:     annotation
    prefix:   /
    #Multilingual website use the following
    #prefix: /{_locale}
    #defaults:   { _locale: '%locale%' }
    #requirements:
    #    _locale: en|fr|es

Step 5: Override templates

It is strongly recommended to use the Override Templates from Third-Party Bundles feature to integrate fully with your site.

For this, simply, create the following structure /templates/bundles/c975LContactFormBundle/ in your app and then duplicate the file layout.html.twig in it, to override the existing Bundle file.

In layout.html.twig, it will mainly consist to extend your layout and define specific variables, i.e. :

{% extends 'layout.html.twig' %}

{# Defines specific variables #}
{% set title = 'Contact' %}

{% block content %}
    {% block contactform_content %}
    {% endblock %}
{% endblock %}

The template used for sending emails is the one of c975LEmailBundle. Override it in /templates/c975LEmailBundle/emails/layout.html.twig.

How to use

The Route name is contactform_display so you can add link in Twig via ̀{{ path('contactform_display') }}.

The url path is /contact or /{_locale}/contact, so simply access to http://example.com/contact or http://example.com/en/contact to display the form.

You can set the subject by using the url parameter s i.e. http://example.com/contact?s=Subject, the field will be readonly in the form, but, of course it can be changed via the url. The value is sanitized and given (as subject) to the form in order to be able to change title and/or info text based on this value, i.e.

{% if 'Subject' in subject %}
    {# Do some stuff #}
{% endif %}

HoneyPot and delay to avoid spam

To avoid ContactFormBundle serving as an entry point to send spam, the field username is a honeypot. It's only displayed to robots and is hidden via css to normal users. If it's filled, then it's not a user, but a bot. There is also a test for the delay used to submit the form. If the form is submitted before the defined delay then it may has not been filled by a human.

For both cases, ContactFormBundle will act as if the mail was sent, but it will not be the case.

Changing infoText

You can change the text displayed at the top of the Contact Form with the following code in your overriding template /templates/c975LContactFormBundle/layout.html.twig:

{% extends 'layout.html.twig' %}

{% set infoText = 'text.contact_info'|trans({'%site%': site}, 'contactForm') %}

{% if YOUR_CONDITION_IS_MET %}
    {% set infoText = 'YOUR_TEXT_TO_DISPLAY' %}
{% endif %}

{% block content %}
    {% block contactform_content %}
    {% endblock %}
{% endblock %}

Events dispatch

Disable "Receive copy" checkbox

You can disable the checkbox to allow user receiving a copy of the email sent, by catching the event CREATE_FORM with the following code. It's useful, for example if the contact form is used to contact another user and you want to preserve its email address.

namespace AppBundle\EventSubscriber;

use Symfony\Component\EventDispatcher\EventSubscriberInterface;
use c975L\ContactFormBundle\Event\ContactFormEvent;

class ContactFormSubscriber implements EventSubscriberInterface
{
    public static function getSubscribedEvents()
    {
        return array(
            ContactFormEvent::CREATE_FORM => 'createForm',
        );
    }

    public function createForm($event)
    {
        //Gets data
        $formData = $event->getFormData();
        $subject = $formData->getSubject();

        //For example, you can check if a string is present in the subject
        if (stripos($subject, 'THE_STRING_YOU_WANT_TO_MATCH_IN_THE_SUBJECT') === 0) {
            $event->setReceiveCopy(false);
        }
    }
}

Set specific data in email sent

In relation with your app specification, it is possible to set specific email data (body, subject, etc.) based on the data sent in form. For this you have to create a listener with the following code:

namespace AppBundle\EventSubscriber;

use Symfony\Component\EventDispatcher\EventSubscriberInterface;
use c975L\ContactFormBundle\Event\ContactFormEvent;

class ContactFormSubscriber implements EventSubscriberInterface
{
    public static function getSubscribedEvents()
    {
        return array(
            ContactFormEvent::SEND_FORM => 'sendForm',
        );
    }

    public function sendForm($event)
    {
        //Gets data
        $formData = $event->getFormData();
        $subject = $formData->getSubject();

        //For example, you can check if a string is present in the subject
        if (stripos($subject, 'THE_STRING_YOU_WANT_TO_MATCH_IN_THE_SUBJECT') === 0) {
            //Do the stuff...

            //Conditions to send email are met
            if (1 == 1) {
                //Defines data for email
                $bodyEmail = 'YOUR_EMAIL_TEMPLATE.html.twig';
                $bodyData = array(
                     //Any needed data for your template
                    );
                //The following array keys are mandatory, but you can set the other keys defined in c975L\EmailBundle
                $emailData = array(
                    'subject' => 'YOUR_EMAIL_SUBJECT',
                    'bodyData' => $bodyData,
                    'bodyEmail' => $bodyEmail,
                    );

                //Updates event
                $event->setEmailData($emailData);
            //Stop sending by setting an error code, it will create a flash including your error code
            } else {
                $event->setError('YOUR_ERROR_CODE');
            }
        }
    }
}

Update redirect url

You can update the url to be redirected to, after submission of the form, with the following code:

namespace AppBundle\EventSubscriber;

use Symfony\Component\EventDispatcher\EventSubscriberInterface;
use c975L\ContactFormBundle\Event\ContactFormEvent;

class ContactFormSubscriber implements EventSubscriberInterface
{
    public static function getSubscribedEvents()
    {
        return array(
            ContactFormEvent::CREATE_FORM => 'createForm',
        );
    }

    public function createForm($event)
    {
        //Updates url to redirect
        $event->getRequest()->getSession()->set('redirectUrl', 'https://example.com');
    }
}

If this project help you to reduce time to develop, you can buy me a coffee :)

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