<?php
/**
* Certificate functions
*
* @since 2.1.0
*
* @package LearnDash\Certificates
*/
if ( ! defined( 'ABSPATH' ) ) {
exit;
}
/**
* Gets certificate details.
*
* Return a link to the certificate and certificate threshold.
*
* @since 2.1.0
*
* @param int $post_id Post ID.
* @param int|null $cert_user_id Optional. ID of the user to get certificate details for. Default null.
*
* @return array Returns certificate details.
*/
function learndash_certificate_details( $post_id, $cert_user_id = null ) {
$cert_details = array();
$cert_user_id = ! empty( $cert_user_id ) ? intval( $cert_user_id ) : get_current_user_id();
if ( ( learndash_is_admin_user() ) || ( learndash_is_group_leader_user() ) ) {
$view_user_id = get_current_user_id();
} else {
$view_user_id = $cert_user_id;
}
$certificate_link = '';
$post = get_post( $post_id );
if ( ( $post instanceof WP_Post ) && ( 'sfwd-quiz' === $post->post_type ) ) {
$meta = get_post_meta( $post_id, '_sfwd-quiz', true );
if ( is_array( $meta ) && ! empty( $meta ) ) {
if ( ( isset( $meta['sfwd-quiz_threshold'] ) ) && ( '' !== $meta['sfwd-quiz_threshold'] ) ) {
$certificate_threshold = $meta['sfwd-quiz_threshold'];
} else {
$certificate_threshold = '0.8';
}
if ( ( isset( $meta['sfwd-quiz_certificate'] ) ) && ( ! empty( $meta['sfwd-quiz_certificate'] ) ) ) {
$certificate_post = intval( $meta['sfwd-quiz_certificate'] );
$certificate_link = get_permalink( $certificate_post );
if ( ! empty( $certificate_link ) ) {
$cert_query_args = array(
'quiz' => $post->ID,
);
// We add the user query string key/value if the viewing user is an admin. This
// allows the admin to view other user's certificated.
if ( ( $cert_user_id != $view_user_id ) && ( ( learndash_is_admin_user() ) || ( learndash_is_group_leader_user() ) ) ) {
$cert_query_args['user'] = $cert_user_id;
}
$cert_query_args['cert-nonce'] = wp_create_nonce( $post->ID . $cert_user_id . $view_user_id );
$certificate_link = add_query_arg( $cert_query_args, $certificate_link );
}
/**
* Filters certificate details link.
*
* @param string $certificate_link Certificate Link.
* @param int $certificate_post Certificate Post.
* @param int $post_id Post ID.
* @param int $user_id User ID.
*/
$certificate_link = apply_filters( 'learndash_certificate_details_link', $certificate_link, $certificate_post, $post->ID, $cert_user_id );
$cert_details = array(
'certificateLink' => $certificate_link,
'certificate_threshold' => $certificate_threshold,
);
}
}
}
return $cert_details;
}
/**
* Gets the course certificate link for the user.
*
* @since 2.1.0
*
* @param int $course_id Course ID.
* @param int|null $cert_user_id Optional. ID of the user to get certificate link for. Default null.
*
* @return string Course certificate link.
*/
function learndash_get_course_certificate_link( $course_id, $cert_user_id = null ) {
$cert_user_id = ! empty( $cert_user_id ) ? intval( $cert_user_id ) : get_current_user_id();
if ( ( empty( $course_id ) ) || ( empty( $cert_user_id ) ) ) {
return '';
}
$certificate_id = learndash_get_setting( $course_id, 'certificate' );
if ( empty( $certificate_id ) ) {
return '';
}
if ( ( learndash_get_post_type_slug( 'certificate' ) !== get_post_type( $certificate_id ) ) ) {
return '';
}
if ( ( learndash_get_post_type_slug( 'course' ) !== get_post_type( $course_id ) ) ) {
return '';
}
$course_status = learndash_course_status( $course_id, $cert_user_id, true );
if ( 'completed' !== $course_status ) {
return '';
}
if ( ( learndash_is_admin_user() ) || ( learndash_is_group_leader_user() ) ) {
$view_user_id = get_current_user_id();
} else {
$view_user_id = $cert_user_id;
}
$cert_query_args = array(
'course_id' => $course_id,
);
// We add the user query string key/value if the viewing user is an admin. This
// allows the admin to view other user's certificated.
if ( ( $cert_user_id != $view_user_id ) && ( ( learndash_is_admin_user() ) || ( learndash_is_group_leader_user() ) ) ) {
$cert_query_args['user'] = $cert_user_id;
}
$cert_query_args['cert-nonce'] = wp_create_nonce( $course_id . $cert_user_id . $view_user_id );
$url = add_query_arg( $cert_query_args, get_permalink( $certificate_id ) );
/**
* Filters course certificate link.
*
* Used in `learndash_get_course_certificate_link` function to filter value of certificate link.
*
* @param string $url The course certificate link.
* @param int $course_id Course ID.
* @param int $user_id The user ID for which the certificate link is generated.
*/
return apply_filters( 'learndash_course_certificate_link', $url, $course_id, $cert_user_id );
}
/**
* Gets the certificate link if the certificate exists and quizzes are completed.
*
* @todo consider for deprecation, not being used in plugin
*
* @since 2.1.0
*
* @param int $quiz_id Quiz ID.
* @param int|null $user_id Optional. User ID. Default null.
*
* @return string Certificate link HTML output or empty string.
*/
function learndash_get_certificate_link( $quiz_id, $user_id = null ) {
if ( empty( $user_id ) ) {
$user_id = get_current_user_id();
}
if ( empty( $user_id ) || empty( $quiz_id ) ) {
return '';
}
$c = learndash_certificate_details( $quiz_id, $user_id );
if ( empty( $c['certificateLink'] ) ) {
return '';
}
$usermeta = get_user_meta( $user_id, '_sfwd-quizzes', true );
$usermeta = maybe_unserialize( $usermeta );
if ( ! is_array( $usermeta ) ) {
$usermeta = array();
}
foreach ( $usermeta as $quizdata ) {
if ( ! empty( $quizdata['quiz'] ) && $quizdata['quiz'] == $quiz_id ) {
if ( $c['certificate_threshold'] <= $quizdata['percentage'] / 100 ) {
/**
* Filters label for certificate link.
*
* @param string $label Label for certificate link.
* @param int $user_id User ID.
* @param int $quiz_id Quiz ID.
*/
return '<a target="_blank" href="' . $c['certificateLink'] . '">' . apply_filters( 'ld_certificate_link_label', esc_html__( 'PRINT YOUR CERTIFICATE', 'learndash' ), $user_id, $quiz_id ) . '</a>';
}
}
}
return '';
}
/**
* Disables the visual editor for the certificate post type edit screen.
*
* User should not be able to use the visual editor tab.
* Fires on `wp_default_editor` hook.
*
* @global WP_Post $post Global post object.
*
* @since 2.1.0
*
* @param array $return An array of editors. Accepts 'tinymce', 'html', 'test'.
*
* @return array|string $return The type of the editor.
*/
function learndash_disable_editor_on_certificate( $return ) {
global $post;
if ( is_admin() && ! empty( $post->post_type ) && 'sfwd-certificates' === $post->post_type ) {
return 'html';
}
return $return;
}
add_filter( 'wp_default_editor', 'learndash_disable_editor_on_certificate', 1, 1 );
/**
* Disables the visual editor for the certificate post type edit screen with javascript.
*
* @global WP_Post $post Global post object.
*
* User should not be able to use the visual editor tab.
* Fires on `admin_footer` hook.
*
* @since 2.1.0
*/
function learndash_disable_editor_on_certificate_js() {
global $post;
if ( is_admin() && ! empty( $post->post_type ) && 'sfwd-certificates' === $post->post_type ) {
?>
<style type="text/css">
a#content-tmce, a#content-tmce:hover, #qt_content_fullscreen, #insert-media-button{
display:none;
}
</style>
<script type="text/javascript">
jQuery( function(){
jQuery("#content-tmce").attr("onclick", null);
});
</script>
<?php
}
}
add_filter( 'admin_footer', 'learndash_disable_editor_on_certificate_js', 99 );
/**
* Registers certificate options metabox.
*
* Fires on `add_meta_boxes` hook.
*
* @param WP_Post $post WP_Post object.
*/
function learndash_certificates_add_meta_box( $post ) {
add_meta_box(
'learndash_certificate_options',
esc_html__( 'LearnDash Certificate Options', 'learndash' ),
'learndash_certificate_options_metabox',
'sfwd-certificates',
'advanced',
'high'
);
}
add_action( 'add_meta_boxes', 'learndash_certificates_add_meta_box' );
/**
* Displays certificate options metabox fields.
*
* @param WP_Post $certificate The current certificate WP_Post object being edited.
*/
function learndash_certificate_options_metabox( $certificate ) {
$learndash_certificate_options_selected = get_post_meta( $certificate->ID, 'learndash_certificate_options', true );
if ( ! is_array( $learndash_certificate_options_selected ) ) {
if ( ! empty( $learndash_certificate_options_selected ) ) {
$learndash_certificate_options_selected = array( $learndash_certificate_options_selected );
} else {
$learndash_certificate_options_selected = array();
}
}
if ( ! isset( $learndash_certificate_options_selected['pdf_page_format'] ) ) {
$learndash_certificate_options_selected['pdf_page_format'] = 'LETTER';
}
if ( ! isset( $learndash_certificate_options_selected['pdf_page_orientation'] ) ) {
$learndash_certificate_options_selected['pdf_page_orientation'] = 'L';
}
wp_nonce_field( plugin_basename( __FILE__ ), 'learndash_certificates_nonce' );
$learndash_certificate_options['pdf_page_format'] = array(
'LETTER' => esc_html__( 'Letter / USLetter (default)', 'learndash' ),
'A4' => esc_html__( 'A4', 'learndash' ),
);
/**
* Filters certificate pdf page format.
*
* @param array $pdf_formats An array of pdf format details.
*/
$learndash_certificate_options['pdf_page_format'] = apply_filters( 'learndash_certificate_pdf_page_formats', $learndash_certificate_options['pdf_page_format'] );
$learndash_certificate_options['pdf_page_orientation'] = array(
'L' => esc_html__( 'Landscape (default)', 'learndash' ),
'P' => esc_html__( 'Portrait', 'learndash' ),
);
/**
* Filters certificate pdf page orientations.
*
* @param array $pdf_orientations An array of pdf page orientations details.
*/
$learndash_certificate_options['pdf_page_orientation'] = apply_filters( 'learndash_certificate_pdf_page_orientations', $learndash_certificate_options['pdf_page_orientation'] );
if ( ( is_array( $learndash_certificate_options['pdf_page_format'] ) ) && ( ! empty( $learndash_certificate_options['pdf_page_format'] ) ) ) {
?>
<p><label for="learndash_certificate_options_pdf_page_format"><?php esc_html_e( 'PDF Page Size', 'learndash' ); ?></label>
<select id="learndash_certificate_options_pdf_page_format" name="learndash_certificate_options[pdf_page_format]">
<?php
foreach ( $learndash_certificate_options['pdf_page_format'] as $key => $label ) {
?>
<option <?php selected( $key, $learndash_certificate_options_selected['pdf_page_format'] ); ?> value="<?php echo esc_attr( $key ); ?>"><?php echo esc_attr( $label ); ?></option>
<?php
}
?>
</select>
</p>
<?php
}
if ( ( is_array( $learndash_certificate_options['pdf_page_orientation'] ) ) && ( ! empty( $learndash_certificate_options['pdf_page_orientation'] ) ) ) {
?>
<p><label for="learndash_certificate_options_pdf_page_orientation"><?php esc_html_e( 'PDF Page Orientation', 'learndash' ); ?></label>
<select id="learndash_certificate_options_pdf_page_orientation" name="learndash_certificate_options[pdf_page_orientation]">
<?php
foreach ( $learndash_certificate_options['pdf_page_orientation'] as $key => $label ) {
?>
<option <?php selected( $key, $learndash_certificate_options_selected['pdf_page_orientation'] ); ?> value="<?php echo esc_attr( $key ); ?>"><?php echo esc_attr( $label ); ?></option>
<?php
}
?>
</select>
</p>
<?php
}
}
/**
* Saves certificate option metabox fields.
*
* Fires on `save_post` hook.
*
* @param int $post_id Current post ID being edited.
*/
function learndash_certificates_save_meta_box( $post_id ) {
// verify if this is an auto save routine.
// If it is our form has not been submitted, so we don't want to do anything.
if ( defined( 'DOING_AUTOSAVE' ) && DOING_AUTOSAVE ) {
return;
}
// verify this came from the our screen and with proper authorization,
// because save_post can be triggered at other times.
if ( ! isset( $_POST['learndash_certificates_nonce'] ) || ! wp_verify_nonce( $_POST['learndash_certificates_nonce'], plugin_basename( __FILE__ ) ) ) {
return;
}
if ( 'sfwd-certificates' != $_POST['post_type'] ) {
return;
}
// Check permissions.
if ( ! current_user_can( 'edit_post', $post_id ) ) {
return;
}
$learndash_certificate_options = array();
if ( ( isset( $_POST['learndash_certificate_options']['pdf_page_format'] ) ) && ( ! empty( $_POST['learndash_certificate_options']['pdf_page_format'] ) ) ) {
$learndash_certificate_options['pdf_page_format'] = esc_attr( $_POST['learndash_certificate_options']['pdf_page_format'] );
} else {
$learndash_certificate_options['pdf_page_format'] = 'LETTER';
}
if ( ( isset( $_POST['learndash_certificate_options']['pdf_page_orientation'] ) ) && ( ! empty( $_POST['learndash_certificate_options']['pdf_page_orientation'] ) ) ) {
$learndash_certificate_options['pdf_page_orientation'] = esc_attr( $_POST['learndash_certificate_options']['pdf_page_orientation'] );
} else {
$learndash_certificate_options['pdf_page_orientation'] = PDF_PAGE_ORIENTATION;
}
update_post_meta( $post_id, 'learndash_certificate_options', $learndash_certificate_options );
}
add_action( 'save_post', 'learndash_certificates_save_meta_box' );
/**
* Certificate published/updated notice to replace the default notice that contains a link to a non-existent resource.
*
* Fires on `post_updated_messages` hook.
*
* @since 3.0.0
*
* @param array $messages An array of post updated messages.
*
* @return array Array of published/updated notice messages.
*/
function learndash_certificates_post_updated_messages( $messages ) {
$post = get_post();
$post_type = get_post_type( $post );
$post_type_object = get_post_type_object( $post_type );
$published_message = wp_kses_post(
sprintf(
// translators: quiz, course.
_x(
'Certificate published. <br /><br />To view the certificate, you must assign it to a %1$s or %2$s. <br />Once you complete the assigned milestone, you can generate the certificate. <br /><br />Click here to read more about this topic: <a href="https://www.learndash.com/support/docs/core/certificates/create-certificate/#previewing_certificates" target="_blank">Previewing Certificates</a>.',
'placeholder: quiz, course',
'learndash'
),
esc_html( learndash_get_custom_label_lower( 'quiz' ) ),
esc_html( learndash_get_custom_label_lower( 'course' ) )
)
);
$updated_message = wp_kses_post(
sprintf(
// translators: quiz, course.
_x(
'Certificate updated. <br /><br />To view the certificate, you must assign it to a %1$s or %2$s. <br />Once you complete the assigned milestone, you can generate the certificate. <br /><br />Click here to read more about this topic: <a href="https://www.learndash.com/support/docs/core/certificates/create-certificate/#previewing_certificates" target="_blank">Previewing Certificates</a>.',
'placeholder: quiz, course',
'learndash'
),
esc_html( learndash_get_custom_label_lower( 'quiz' ) ),
esc_html( learndash_get_custom_label_lower( 'course' ) )
)
);
$messages['sfwd-certificates'] = array(
0 => '', // Unused. Messages start at index 1.
1 => $updated_message,
2 => esc_html__( 'Custom field updated.', 'learndash' ),
3 => esc_html__( 'Custom field deleted.', 'learndash' ),
4 => $updated_message,
/* translators: %s: date and time of the revision */
5 => isset( $_GET['revision'] ) ? sprintf( esc_html__( 'Certificate restored to revision from %s', 'learndash' ), wp_post_revision_title( (int) $_GET['revision'], false ) ) : false,
6 => $published_message,
7 => esc_html__( 'Certificate saved.', 'learndash' ),
8 => esc_html__( 'Certificate submitted.', 'learndash' ),
9 => sprintf(
// translators: placeholder: Post Date.
esc_html_x( 'Certificate scheduled for: <strong>%s</strong>.', 'placeholder: Post Date', 'learndash' ),
// translators: Publish box date format, see https://secure.php.net/date.
date_i18n( __( 'M j, Y @ H:i', 'learndash' ), strtotime( $post->post_date ) )
),
10 => esc_html__( 'Certificate draft updated.', 'learndash' ),
);
return $messages;
}
add_filter( 'post_updated_messages', 'learndash_certificates_post_updated_messages' );
/**
* Get Group certificate link for user
*
* @since 3.2.0
*
* @param int $group_id Group ID.
* @param int $cert_user_id User ID.
*
* @return string
*/
function learndash_get_group_certificate_link( $group_id, $cert_user_id = null ) {
$cert_user_id = ! empty( $cert_user_id ) ? intval( $cert_user_id ) : get_current_user_id();
if ( ( empty( $group_id ) ) || ( empty( $cert_user_id ) ) ) {
return '';
}
$certificate_id = learndash_get_setting( $group_id, 'certificate' );
if ( empty( $certificate_id ) ) {
return '';
}
if ( ( learndash_get_post_type_slug( 'certificate' ) !== get_post_type( $certificate_id ) ) ) {
return '';
}
if ( ( learndash_get_post_type_slug( 'group' ) !== get_post_type( $group_id ) ) ) {
return '';
}
$group_status = learndash_get_user_group_status( $group_id, $cert_user_id, true );
if ( 'completed' !== $group_status ) {
return '';
}
if ( ( learndash_is_admin_user() ) || ( learndash_is_group_leader_user() ) ) {
$view_user_id = get_current_user_id();
} else {
$view_user_id = $cert_user_id;
}
$cert_query_args = array(
'group_id' => $group_id,
);
// We add the user query string key/value if the viewing user is an admin. This
// allows the admin to view other user's certificated.
if ( ( $cert_user_id != $view_user_id ) && ( ( learndash_is_admin_user() ) || ( learndash_is_group_leader_user() ) ) ) {
$cert_query_args['user'] = $cert_user_id;
}
$cert_query_args['cert-nonce'] = wp_create_nonce( $group_id . $cert_user_id . $view_user_id );
$url = add_query_arg( $cert_query_args, get_permalink( $certificate_id ) );
/**
* Filter Group Certificate URL.
*
* @since 3.2.0
*
* @param string $url Group Certificate URL.
* @param int $group_id Group ID.
* @param int $cert_user_id User ID.
*/
return apply_filters( 'learndash_group_certificate_link', $url, $group_id, $cert_user_id );
}
/**
* Display the PDF Certificate.
*
* This function was moved from template_redirect_access() in
* includes/class-ld-cpt-instance.php
*
* @since 3.2.3
*/
function learndash_certificate_display() {
if ( is_singular( learndash_get_post_type_slug( 'certificate' ) ) ) {
if ( ( isset( $_GET['cert-nonce'] ) ) && ( ! empty( $_GET['cert-nonce'] ) ) ) {
$certificate_post = get_post( get_the_ID() );
// The viewing user ID.
$view_user_id = get_current_user_id();
/**
* Then determined for whom the certificate if for. A
* Group Leader or admin user can view other users.
*/
if ( ( ( learndash_is_admin_user() ) || ( learndash_is_group_leader_user() ) ) && ( ( isset( $_GET['user'] ) ) && ( ! empty( $_GET['user'] ) ) ) ) {
$cert_user_id = absint( $_GET['user'] );
} else {
$cert_user_id = get_current_user_id();
}
if ( ( isset( $_GET['group_id'] ) ) && ( ! empty( $_GET['group_id'] ) ) ) {
$group_id = absint( $_GET['group_id'] );
if ( wp_verify_nonce( esc_attr( $_GET['cert-nonce'] ), $group_id . $cert_user_id . $view_user_id ) ) {
$group_post = get_post( $group_id );
if ( ( $group_post ) && ( is_a( $group_post, 'WP_Post' ) ) && ( learndash_get_post_type_slug( 'group' ) === $group_post->post_type ) ) {
$group_certificate_post_id = learndash_get_setting( $group_post->ID, 'certificate' );
if ( absint( $group_certificate_post_id ) === absint( $certificate_post->ID ) ) {
$group_status = learndash_get_user_group_status( $group_id, $cert_user_id, true );
if ( 'completed' === $group_status ) {
if ( ( ( learndash_is_admin_user() ) || ( learndash_is_group_leader_user() ) ) && ( intval( $cert_user_id ) !== intval( $view_user_id ) ) ) {
wp_set_current_user( $cert_user_id );
}
if ( has_action( 'learndash_tcpdf_init' ) ) {
/**
* Fires on tcpdf initialization.
*
* @since 3.2.0
*
* @param array $args {
* @type int $cert_id Certificate Post ID.
* @type int $cert_user_id User ID.
* @type int $post_id Related Course, Quiz post ID.
* } Args.
*/
do_action(
'learndash_tcpdf_init',
array(
'cert_id' => $certificate_post->ID,
'user_id' => $cert_user_id,
'post_id' => $group_id,
)
);
} else {
require_once __DIR__ . '/ld-convert-post-pdf.php';
learndash_certificate_post_shortcode(
array(
'cert_id' => $certificate_post->ID,
'user_id' => $cert_user_id,
'post_id' => $group_id,
)
);
}
}
}
}
}
} elseif ( ( isset( $_GET['course_id'] ) ) && ( ! empty( $_GET['course_id'] ) ) ) {
$course_id = absint( $_GET['course_id'] );
if ( wp_verify_nonce( esc_attr( $_GET['cert-nonce'] ), $course_id . $cert_user_id . $view_user_id ) ) {
$course_post = get_post( $course_id );
if ( ( $course_post ) && ( is_a( $course_post, 'WP_Post' ) ) && ( learndash_get_post_type_slug( 'course' ) === $course_post->post_type ) ) {
$course_certificate_post_id = learndash_get_setting( $course_post->ID, 'certificate' );
if ( absint( $course_certificate_post_id ) === absint( $certificate_post->ID ) ) {
$course_status = learndash_course_status( $course_id, $cert_user_id, true );
if ( 'completed' === $course_status ) {
if ( ( ( learndash_is_admin_user() ) || ( learndash_is_group_leader_user() ) ) && ( intval( $cert_user_id ) !== intval( $view_user_id ) ) ) {
wp_set_current_user( $cert_user_id );
}
/** This filter is documented in includes/class-ld-cpt-instance.php */
if ( has_action( 'learndash_tcpdf_init' ) ) {
do_action(
'learndash_tcpdf_init',
array(
'cert_id' => $certificate_post->ID,
'user_id' => $cert_user_id,
'post_id' => $course_id,
)
);
} else {
require_once __DIR__ . '/ld-convert-post-pdf.php';
learndash_certificate_post_shortcode(
array(
'cert_id' => $certificate_post->ID,
'user_id' => $cert_user_id,
'post_id' => $course_id,
)
);
}
die();
}
}
}
}
} elseif ( ( isset( $_GET['quiz'] ) ) && ( ! empty( $_GET['quiz'] ) ) ) {
$quiz_id = intval( $_GET['quiz'] );
if ( wp_verify_nonce( $_GET['cert-nonce'], $quiz_id . $cert_user_id . $view_user_id ) ) {
$quiz_post = get_post( $quiz_id );
if ( ( $quiz_post ) && ( is_a( $quiz_post, 'WP_Post' ) ) && ( learndash_get_post_type_slug( 'quiz' ) === $quiz_post->post_type ) ) {
$quiz_certificate_post_id = learndash_get_setting( $quiz_post->ID, 'certificate' );
if ( absint( $quiz_certificate_post_id ) === absint( $certificate_post->ID ) ) {
$time = isset( $_GET['time'] ) ? intval( $_GET['time'] ) : -1;
$quizinfo = get_user_meta( $cert_user_id, '_sfwd-quizzes', true );
$selected_quizinfo = null;
$selected_quizinfo2 = null;
if ( ! empty( $quizinfo ) ) {
foreach ( $quizinfo as $quiz_i ) {
if ( ( ( isset( $quiz_i['time'] ) ) && intval( $quiz_i['time'] ) == intval( $time ) ) && ( intval( $quiz_i['quiz'] ) === intval( $quiz_id ) ) ) {
$selected_quizinfo = $quiz_i;
break;
}
if ( intval( $quiz_i['quiz'] ) === intval( $quiz_id ) ) {
$selected_quizinfo2 = $quiz_i;
}
}
}
$selected_quizinfo = empty( $selected_quizinfo ) ? $selected_quizinfo2 : $selected_quizinfo;
if ( ! empty( $selected_quizinfo ) ) {
$certificate_threshold = learndash_get_setting( $selected_quizinfo['quiz'], 'threshold' );
if ( ( isset( $selected_quizinfo['percentage'] ) && $selected_quizinfo['percentage'] >= $certificate_threshold * 100 ) || ( isset( $selected_quizinfo['count'] ) && $selected_quizinfo['score'] / $selected_quizinfo['count'] >= $certificate_threshold ) ) {
if ( ( ( learndash_is_admin_user() ) || ( learndash_is_group_leader_user() ) ) && ( $cert_user_id !== $view_user_id ) ) {
wp_set_current_user( $cert_user_id );
}
if ( has_action( 'learndash_tcpdf_init' ) ) {
/** This filter is documented in includes/class-ld-cpt-instance.php */
do_action(
'learndash_tcpdf_init',
array(
'cert_id' => $certificate_post->ID,
'user_id' => $cert_user_id,
'post_id' => $selected_quizinfo['quiz'],
)
);
} else {
/**
* Include library to generate PDF
*/
require_once __DIR__ . '/ld-convert-post-pdf.php';
learndash_certificate_post_shortcode(
array(
'cert_id' => $certificate_post->ID,
'user_id' => $cert_user_id,
'post_id' => $selected_quizinfo['quiz'],
)
);
}
die();
}
}
}
}
}
}
}
/**
* Action to allow custom handling of when a user cannot view a certificate.
*
* @since 3.2.3
*/
do_action( 'learndash_certificate_disallowed' );
// If here we display the error and exit.
esc_html_e( 'Access to certificate page is disallowed.', 'learndash' );
die();
}
}
add_action( 'template_redirect', 'learndash_certificate_display', 5 );
/**
* Get where the Certificate post is used. Course/Quiz/Group.
*
* @since 3.4.1
*
* @param integer $post_id Certificate Post ID.
* @param string $post_type Single post type slug to check.
*
* @return array Array of post IDs.
*/
function learndash_certificate_get_used_by( $post_id = 0, $post_type = '' ) {
$post_ids = array();
$post_id = absint( $post_id );
$post_type = esc_attr( $post_type );
if ( ( ! empty( $post_id ) ) && ( ! empty( $post_type ) ) ) {
$transient_key = 'learndash_cert_used_' . $post_id . '_' . $post_type;
$post_ids_transient = LDLMS_Transients::get( $transient_key );
if ( false === $post_ids_transient ) {
$query_args = array(
'post_type' => $post_type,
'fields' => 'ids',
'nopaging' => true,
'meta_key' => '_ld_certificate',
'meta_value' => $post_id,
'meta_compare' => '=',
);
$query = new WP_Query( $query_args );
if ( property_exists( $query, 'posts' ) ) {
$post_ids = array_map( 'absint', $query->posts );
}
LDLMS_Transients::set( $transient_key, $post_ids, MINUTE_IN_SECONDS );
} else {
$post_ids = $post_ids_transient;
}
}
return $post_ids;
}