protected function EnsureLessonDisbandAccess($lessonID)
{
global $USER;
if (!$this->oAccess->IsLessonAccessible($lessonID, CLearnAccess::OP_LESSON_REMOVE, true)) {
throw new CLearnRenderAdminUnilessonListException('', CLearnRenderAdminUnilessonListException::C_ACCESS_DENIED);
}
// ensure, that all childs can be unlinked from lesson
$arChildEdges = CLearnLesson::ListImmediateChilds($lessonID);
if (count($arChildEdges) > 0) {
if (!$this->oAccess->IsLessonAccessible($lessonID, CLearnAccess::OP_LESSON_UNLINK_DESCENDANTS, true)) {
throw new CLearnRenderAdminUnilessonListException('', CLearnRenderAdminUnilessonListException::C_ACCESS_DENIED);
}
foreach ($arChildEdges as $arChildEdge) {
if (!$this->oAccess->IsLessonAccessible($arChildEdge['CHILD_LESSON'], CLearnAccess::OP_LESSON_UNLINK_FROM_PARENTS, true)) {
throw new CLearnRenderAdminUnilessonListException('', CLearnRenderAdminUnilessonListException::C_ACCESS_DENIED);
}
}
}
// ensure, that all parents can be unlinked from lesson
$arParentEdges = CLearnLesson::ListImmediateParents($lessonID);
if (count($arParentEdges) > 0) {
if (!$this->oAccess->IsLessonAccessible($lessonID, CLearnAccess::OP_LESSON_UNLINK_FROM_PARENTS, true)) {
throw new CLearnRenderAdminUnilessonListException('', CLearnRenderAdminUnilessonListException::C_ACCESS_DENIED);
}
foreach ($arParentEdges as $arParentEdge) {
if (!$this->oAccess->IsLessonAccessible($arParentEdge['PARENT_LESSON'], CLearnAccess::OP_LESSON_UNLINK_DESCENDANTS, true)) {
throw new CLearnRenderAdminUnilessonListException('', CLearnRenderAdminUnilessonListException::C_ACCESS_DENIED);
}
}
}
return $this;
}
