$lessonPath = $_POST['LESSON_PATH'];
} elseif (isset($_GET['LESSON_PATH'])) {
$lessonPath = $_GET['LESSON_PATH'];
} else {
$result = CLQuestion::GetByID($ID);
$arData = $result->Fetch();
$oPath = new CLearnPath($arData['LESSON_ID']);
$lessonPath = $oPath->ExportUrlencoded();
}
$oPath = new CLearnPath();
$oPath->ImportUrlencoded($lessonPath);
$uriLessonPath = $oPath->ExportUrlencoded();
$NEW_LESSON_ID = false;
$LESSON_ID = false;
if ($ID == 0) {
$LESSON_ID = $oPath->PopBottom();
} else {
// Get lesson id from item data
$result = CLQuestion::GetByID($ID);
$arQuestionData = $result->ExtractFields("str_");
if ($arQuestionData) {
$LESSON_ID = $arQuestionData['LESSON_ID'];
if (isset($_POST['LESSON_ID']) && $_POST['LESSON_ID'] >= 1 && $_POST['LESSON_ID'] != $LESSON_ID) {
$NEW_LESSON_ID = (int) $_POST['LESSON_ID'];
}
}
}
if ($LESSON_ID === false) {
require $_SERVER["DOCUMENT_ROOT"] . "/bitrix/modules/main/include/prolog_admin_after.php";
CAdminMessage::ShowMessage(GetMessage('LEARNING_BAD_LESSON'));
require $_SERVER['DOCUMENT_ROOT'] . '/bitrix/modules/main/include/epilog_admin.php';
}
//Set Title
$arParams["SET_TITLE"] = $arParams["SET_TITLE"] == "N" ? "N" : "Y";
if ($arParams["SET_TITLE"] == "Y") {
$APPLICATION->SetTitle($arResult["CHAPTER"]["NAME"]);
}
$bCanEdit = CLearnAccessMacroses::CanUserEditLesson(array('lesson_id' => $arParams['CHAPTER_ID'])) || $USER->IsAdmin();
if ($bCanEdit) {
$deleteReturnUrl = "";
if ($parent = $this->GetParent()) {
$parentLessonId = 0;
$lessonPath = "";
if (strlen($arParams["LESSON_PATH"]) > 0) {
$path = new CLearnPath();
$path->ImportUrlencoded($arParams["LESSON_PATH"]);
$path->PopBottom();
$lessonPath = $path->ExportUrlencoded();
$lessonId = $path->PopBottom();
$edgesToParents = CLearnLesson::ListImmediateParents($arParams['CHAPTER_ID']);
foreach ($edgesToParents as $arEdgeToParent) {
if ((int) $arEdgeToParent['PARENT_LESSON'] === (int) $lessonId) {
$parentLessonId = $lessonId;
break;
}
}
}
if ($parentLessonId) {
$deleteReturnUrl = CComponentEngine::MakePathFromTemplate($parent->arResult["FOLDER"] . $parent->arResult["URL_TEMPLATES"]["chapter.detail"], array("CHAPTER_ID" => "0" . $parentLessonId, "COURSE_ID" => $arParams["COURSE_ID"]));
$deleteReturnUrl .= strpos($deleteReturnUrl, "?") !== false ? "&" : "?";
$deleteReturnUrl .= "LESSON_PATH=" . $lessonPath;
} else {
/**
* @access public
*/
public static final function GetListOfParentPathes($lessonId, $breakOnLessonId = false, $breakBeforeLesson = false, $arIgnoreEdges = array())
{
$arPathes = array(array($lessonId));
$arAlreadyProcessedLessons = array($lessonId);
if ($breakOnLessonId !== false) {
// This lesson must be interpreted as parentless.
// This behaviour can be emulated by adding to
// $arAlreadyProcessedLessons all immediate parents
// of this lesson.
$arEdges = self::ListImmediateParents($breakOnLessonId);
foreach ($arEdges as $arEdge) {
$arAlreadyProcessedLessons[] = (int) $arEdge['PARENT_LESSON'];
}
}
if ($breakBeforeLesson !== false) {
$arAlreadyProcessedLessons[] = (int) $breakBeforeLesson;
}
$arAllPathes = self::GetListOfParentPathesRecursive($arPathes, $arAlreadyProcessedLessons, $arIgnoreEdges);
$arObjPathes = array();
foreach ($arAllPathes as $arPathBackward) {
$arPath = array_reverse($arPathBackward);
$o = new CLearnPath($arPath);
$o->PopBottom();
// remove $lessonId
// skip empty pathes
if ($o->Count() > 0) {
$arObjPathes[] = $o;
}
}
return $arObjPathes;
}
