function filter_em_bookings_with_akismet( $result, $EM_Booking ) {
// If the booking has already failed previous validation checks, skip Akismet to save API calls
if ( ! $result ) {
return $result;
}
// Double-check that Akismet is active on the site
if ( ! is_plugin_active( 'akismet/akismet.php' ) && ! class_exists( 'Akismet' ) ) {
return $result;
}
// 1. Gather the attendee's submission data from the booking object
$person_name = $EM_Booking->get_person()->display_name;
$person_email = $EM_Booking->get_person()->user_email;
// Fallback to POST data if the guest user object isn't fully hydrated yet
if ( empty( $person_name ) ) {
$person_name = sanitize_text_field( $_POST['user_name'] ?? ($_POST['first_name'] ?? '') . ' ' . ($_POST['last_name'] ?? '') );
}
if ( empty( $person_email ) ) {
$person_email = sanitize_email( $_POST['user_email'] ?? '' );
}
// Compile custom booking form text notes/comments to pass as content
$booking_notes = sanitize_textarea_field( $_POST['booking_comment'] ?? '' );
// 2. Format the payload for Akismet's API
$query_string = array(
'blog' => get_option( 'home' ),
'user_ip' => $_SERVER['REMOTE_ADDR'] ?? '',
'user_agent' => $_SERVER['HTTP_USER_AGENT'] ?? '',
'referrer' => $_SERVER['HTTP_REFERER'] ?? '',
'comment_type' => 'performance-booking', // Identifies the context to Akismet
'comment_author' => $person_name,
'comment_author_email' => $person_email,
'comment_content' => $booking_notes,
);
// 3. Request verification from Akismet
$response = Akismet::http_post( http_build_query( $query_string ), 'comment-check' );
// 4. Handle Akismet's verdict
if ( isset( $response[1] ) && trim( $response[1] ) === 'true' ) {
// Log it locally if you need to monitor false positives
error_log( "Akismet blocked a booking submission from: " . $person_email );
// Add an error message to display on the booking form front-end
$EM_Booking->add_error( __( 'Our automated system flagged this submission as spam. If this is an error, please contact us directly.', 'events-manager' ) );
return false;
}
return $result;
}
add_filter( 'em_booking_validate', 'filter_em_bookings_with_akismet', 99, 2 );
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