/**
  * Add additional Pinterest Meta Tags
  * @param $tags
  */
 public function MetaTags(&$tags)
 {
     $pinterestDomainVerifyID = PinterestButton::get_pinterest_domain_verify_id();
     if ($pinterestDomainVerifyID != null) {
         $tags .= sprintf("<meta name='p:domain_verify' content='%s'>", $pinterestDomainVerifyID);
     }
 }
 /**
  * Add the PinterestDomainVerifyID field if it is not already set in the config.yml
  * @param FieldList $fields
  */
 public function updateCMSFields(FieldList $fields)
 {
     if (PinterestButton::use_site_config()) {
         $fields->addFieldToTab("Root.Pinterest", TextField::create("PinterestDomainVerifyID", "PinterestDomainVerifyID")->setDescription("Place your pinterest ID here"));
     } else {
         $fields->removeByName("PinterestDomainVerifyID");
     }
 }