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Prestashop is one of the most used ecommerce on the internet BUT the contact form has no protection again the spam. Of course you can buy an additional plugin but I will explain how to integrate a spam protection without paying. You have to create and configure an account, change 2 sources. You can make it in 30 mn or less.

Here is a howto step by step for prestashop 1.6 (I don’t know about prestashop 1.7 but I imagine it should be similar).

1 Setup your Google reCAPTCHA if you don’t have it

https://www.google.com/recaptcha/intro/index.html

Note the key and the secret key

You have to configure it and put your domain name.

For me it is like that

 <div class="submit">
 <button type="submit" name="submitMessage" id="submitMessage" class="button"><span>{l s='Send'}<i class="icon-chevron-right right"></i></span></button>
 </div>
 </form>

Just above add few lines of code. Replace key by your key

 <script src='https://www.google.com/recaptcha/api.js'></script>
<div class="g-recaptcha" data-sitekey="key"></div>

That should look like that

<div>
 <script src='https://www.google.com/recaptcha/api.js'></script>
 <div class="g-recaptcha" data-sitekey="key"></div>
</div>

 <div class="submit">
 <button type="submit" name="submitMessage" id="submitMessage" class="button"><span>
{l s='Send'}
<i class="icon-chevron-right right"></i></span>
</button>
 </div>
 </form>

3 Change ContactControler.php

If you don’t have this source in override\controllers\front copy it from controllers\front

Then you have to add few lines to check if the captcha is ok or not

search the postProcess() function it should be at the begining (2nd function) and add

  if (Tools::isSubmit('submitMessage')) {
 $extension = array('.txt', '.rtf', '.doc', '.docx', '.pdf', '.zip', '.png', '.jpeg', '.gif', '.jpg');
 $file_attachment = Tools::fileAttachment('fileUpload');
 $message = Tools::getValue('message'); // Html entities is not usefull, iscleanHtml check there is no bad html tags.
 $id_order = (int)$this->getOrder();
 if (!($from = trim(Tools::getValue('from'))) || !Validate::isEmail($from)) {
 $this->errors[] = Tools::displayError('Invalid email address.');
// add the 2 lines from here
 } elseif (!($gcaptcha = (int)(Tools::getValue('g-recaptcha-response')))) {
 $this->errors[] = Tools::displayError('Captcha error');
// to here