wordpress-comments.php

<?php // phpcs:ignore -- Ignore the  "\r\n" notice for some machines.

/**
 * Instead of listening to the consent checkbox, this function checks for the "preferences" consent
 *
 * The consent checkbox is removed
 * if preferences is set, the comments cookies function gets passed a $cookies_consent=true, so cookies can be set. Otherwise, it's false.
 */

/**
 * First we remove the default comment cookies action, and replace with our own
 * we add custom comment cookies action, which checks the consent, then calls the comment cookie function in wp
 */

function wp_consent_api_wordpress_comments_cookies() {

	// Remove default wp action.
	remove_action( 'set_comment_cookies', 'wp_set_comment_cookies', 10 );

	// Add our own custom action.
	add_action( 'set_comment_cookies', 'wp_consent_api_set_comment_cookies', 10, 3 );

	// Remove checkbox.
	add_filter( 'comment_form_default_fields', 'wp_consent_api_wordpress_comment_form_hide_cookies_consent' );

}
add_action( 'init', 'wp_consent_api_wordpress_comments_cookies' );

/**
 * Custom consent function, checking consent level to decide if cookies can be set.
 */
function wp_consent_api_set_comment_cookies( $comment, $user, $cookies_consent ) {
	$cookies_consent = wp_has_consent( 'preference' );
	wp_set_comment_cookies( $comment, $user, $cookies_consent );
}

/**
 * Remove consent checkbox
 * @param $fields
 *
 * @return array $fields
 */

function wp_consent_api_wordpress_comment_form_hide_cookies_consent( $fields ) {
	unset( $fields['cookies'] );
	return $fields;
}