%PDF-
%PDF-
Mini Shell
Mini Shell
<?php
/**
* Class LP_Preview_Course
*
* Helper class for preview course/lesson/quiz
*
* @since 3.0.0
*/
class LP_Preview_Course {
/**
* @var int
*/
protected static $_item_id = 0;
/**
* @var int
*/
protected static $_preview_course = 0;
/**
* Get a FAKE course for preview.
*
* @return LP_Course|mixed
*/
public static function get_preview_course() {
if ( empty( self::$_preview_course ) ) {
global $wpdb;
$query = $wpdb->prepare( "
SELECT ID
FROM {$wpdb->posts} p
INNER JOIN {$wpdb->postmeta} pm ON pm.post_id = p.ID AND pm.meta_key = %s
WHERE pm.meta_value = %s
", '_lp_preview_course', 'yes' );
if ( ! $course_id = $wpdb->get_var( $query ) ) {
$title = __( 'Preview Course', 'learnpress' );
self::$_preview_course = wp_insert_post(
array(
'post_author' => 0,
'post_type' => LP_COURSE_CPT,
'post_title' => $title,
'post_status' => 'draft',
'post_name' => sanitize_title( $title )
)
);
update_post_meta( self::$_preview_course, '_lp_preview_course', 'yes' );
} else {
self::$_preview_course = $course_id;
}
}
return self::$_preview_course;
}
public static function exclude( $where ) {
global $wpdb;
if ( ! self::is_preview() ) {
if ( $ids = LP_Preview_Course::get_preview_courses() ) {
$format = array_fill( 0, sizeof( $ids ), '%d' );
$where .= $wpdb->prepare( " AND {$wpdb->posts}.ID NOT IN(" . join( ',', $format ) . ") ", $ids );
}
}
return $where;
}
public static function is_preview() {
if ( ! $post_id = LP_Request::get_int( 'lp-preview' ) ) {
return false;
}
if ( ! wp_verify_nonce( LP_Request::get_string( '_wpnonce' ), 'lp-preview' ) ) {
return false;
}
if ( ! $post_item = get_post( $post_id ) ) {
throw new Exception( __( 'Invalid preview item.', 'learnpress' ) );
}
return $post_item;
}
/**
* Setup preview environment.
*/
public static function setup_preview() {
try {
if ( ! $post_item = self::is_preview() ) {
return false;
}
if ( ! in_array( $post_item->post_type, learn_press_course_get_support_item_types( true ) ) ) {
throw new Exception( __( 'Invalid preview item.', 'learnpress' ) );
}
// Access forbidden
if ( ! current_user_can( 'manage_options' ) ) {
if ( $post_item->post_author != get_current_user_id() ) {
throw new Exception( __( 'Access denied.', 'learnpress' ) );
}
}
$post_id = $post_item->ID;
if ( empty( $post_item->post_name ) ) {
wp_update_post(
array(
'ID' => $post_id,
'post_name' => sanitize_title( $post_item->post_title )
)
);
wp_redirect( learn_press_get_current_url() );
exit();
}
self::$_item_id = $post_id;
$preview_course = self::get_preview_course();
$post_course = get_post( $preview_course );
$post = wp_cache_get( self::$_preview_course, 'posts' );
$post->post_status = 'publish';
wp_cache_set( self::$_preview_course, $post, 'posts' );
/**
* Set FAKE url of preview course to request uri so WP will parse
* the request as a real course.
*/
$_SERVER['REQUEST_URI'] = self::build_course_url( $post_course, $post_item );
// Should not redirect canonical to real course
add_filter( 'redirect_canonical', '__return_false' );
// Prevent 404 because the preview item is not inside a course
add_filter( 'learn-press/query/404', '__return_false' );
// Add custom class to body
add_filter( 'body_class', array( __CLASS__, 'body_class' ) );
// Edit button
add_action( 'learn-press/before-course-item-content', array( __CLASS__, 'edit_button' ) );
//learn_press_debug($_SERVER);die();
}
catch ( Exception $ex ) {
learn_press_add_message( $ex->getMessage(), 'error' );
wp_redirect( get_home_url() );
exit();
}
}
public static function get_preview_courses() {
if ( false === ( $ids = wp_cache_get( 'preview-courses', 'learnpress' ) ) ) {
global $wpdb;
$query = $wpdb->prepare( "
SELECT post_id
FROM {$wpdb->postmeta}
WHERE meta_key = %s AND meta_value = %s
", '_lp_preview_course', 'yes' );
$ids = $wpdb->get_col( $query );
wp_cache_set( 'preview-courses', $ids, 'learnpress' );
}
return $ids;
}
public static function edit_button() {
learn_press_display_message( sprintf( __( 'You are in preview mode. Continue <a href="%s">editing</a>?', 'learnpress' ), get_edit_post_link( self::$_item_id ) ), 'error' );
}
public static function body_class( $classes ) {
$classes[] = 'lp-preview';
return $classes;
}
/**
* Build a FAKE url of a course.
*
* @param WP_Post $post_course
* @param WP_Post $post_item
*
* @return string
*/
public static function build_course_url( $post_course, $post_item ) {
$post_types = get_post_types( '', 'objects' );
$slug = preg_replace( '!^/!', '', $post_types[ LP_COURSE_CPT ]->rewrite['slug'] );
$custom_slug_lesson = sanitize_title_with_dashes( LP()->settings->get( 'lesson_slug' ) );
$custom_slug_quiz = sanitize_title_with_dashes( LP()->settings->get( 'quiz_slug' ) );
if ( ! empty( $custom_slug_lesson ) ) {
$post_types[ LP_LESSON_CPT ]->rewrite['slug'] = urldecode( $custom_slug_lesson );
}
if ( ! empty( $custom_slug_quiz ) ) {
$post_types[ LP_QUIZ_CPT ]->rewrite['slug'] = urldecode( $custom_slug_quiz );
}
$request_uri = $_SERVER['REQUEST_URI'];
$arr = parse_url( $request_uri );
return join(
'/',
array(
untrailingslashit( $arr['path'] ),
$slug,
$post_course->post_name,
$post_types[ $post_item->post_type ]->rewrite['slug'],
$post_item->post_name
)
);
}
public static function init() {
add_action( 'init', array( __CLASS__, 'setup_preview' ) );
add_filter( 'wp_count_posts', array( __CLASS__, 'reduce_counts' ), 10, 3 );
add_filter( 'posts_where_paged', array( __CLASS__, 'exclude' ) );
}
public static function reduce_counts( $counts, $type, $perm ) {
if ( ( LP_COURSE_CPT === $type ) && ( $ids = self::get_preview_courses() ) ) {
$counts->publish -= sizeof( $ids );
}
return $counts;
}
}
LP_Preview_Course::init();
Zerion Mini Shell 1.0