uo_generate_group_certificate_content
function modify_pdf_certificate_content( $content, $user_id, $course_id ){ //enter your modifications or use regex to modify content return $content; } add_action( 'uo_generate_course_certificate_content', 'modify_pdf_certificate_content', 20, 3 ); Filters the content of a group certificate before it's generated, allowing customization of its output.
add_filter( 'uo_generate_group_certificate_content', $callback, 10, 2 );
Description
This filter hook `uo_generate_group_certificate_content` allows developers to modify the content before it's rendered for group certificates. You can manipulate the `$cert_content` string directly. The hook provides the certificate content, user object, and an array of parameters. Use it to customize the appearance or information displayed on group certificates.
Usage
add_filter( 'uo_generate_group_certificate_content', 'your_function_name', 10, 2 );Parameters
-
$cert_content(mixed) - - **$user** `mixed`
-
$parameters(mixed)
Return Value
The filtered value.
Examples
add_filter( 'uo_generate_group_certificate_content', 'my_custom_group_certificate_content', 10, 3 );
/**
* Adds a custom field to the group certificate for the group's creation date.
*
* @param mixed $cert_content The current certificate content.
* @param int $user_id The ID of the user for whom the certificate is generated.
* @param int $group_id The ID of the group for which the certificate is generated.
* @return mixed The modified certificate content.
*/
function my_custom_group_certificate_content( $cert_content, $user_id, $group_id ) {
// Get the group's creation date.
// Assuming you have a way to retrieve group data, for example, using a custom post type or a plugin's API.
// This is a placeholder and might need adjustment based on your specific group implementation.
$group = get_post( $group_id ); // Example if groups are custom post types.
if ( $group && $group->post_date ) {
$creation_date = date( 'F j, Y', strtotime( $group->post_date ) );
// Append the creation date to the certificate content.
// This assumes your shortcodes can handle additional plain text or specific markers.
// You might want to use a specific shortcode or a placeholder that your certificate generation system recognizes.
// For this example, we'll append it directly.
$cert_content .= "nnGroup Created On: " . $creation_date;
}
// You could also use regex to find and replace specific placeholders if your system supports it.
// Example: $cert_content = str_replace( '[group_creation_date]', $creation_date, $cert_content );
return $cert_content;
}Placement
This code should be placed in the functions.php file of your active theme, a custom plugin, or using a code snippets plugin.
Source Code
src/includes/tcpdf-certificate-code.php:954
public static function generate_group_content( $cert_content, $args ) {
$user = $args['user'];
$parameters = $args['parameters'];
$cert_content = preg_replace( '/([groupinfo)/', '[groupinfo user_id="' . $user->ID . '" group_id="' . $parameters['group-id'] . '" ', $cert_content );
$cert_content = preg_replace( '/([usermeta)/', '[usermeta user_id="' . $user->ID . '" ', $cert_content );
/**
*
* function modify_pdf_certificate_content( $content, $user_id, $course_id ){
* //enter your modifications or use regex to modify content
* return $content;
* }
*
* add_action( 'uo_generate_course_certificate_content', 'modify_pdf_certificate_content', 20, 3 );
*/
$cert_content = apply_filters( 'uo_generate_group_certificate_content', $cert_content, $user->ID, $parameters['group-id'] );
return $cert_content;
}