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70 lines
2.7 KiB
PHP
70 lines
2.7 KiB
PHP
<?php // $Id$
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/**
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* Action for adding an end of branch page
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*
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* @version $Id$
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* @license http://www.gnu.org/copyleft/gpl.html GNU Public License
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* @package lesson
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**/
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confirm_sesskey();
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// first get the preceeding page
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$pageid = required_param('pageid', PARAM_INT);
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$timenow = time();
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// the new page is not the first page (end of branch always comes after an existing page)
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if (!$page = $DB->get_record("lesson_pages", array("id" => $pageid))) {
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print_error('cannotfindpagerecord', 'lesson');
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}
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// chain back up to find the (nearest branch table)
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$btpageid = $pageid;
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if (!$btpage = $DB->get_record("lesson_pages", array("id" => $btpageid))) {
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print_error('cannotfindpagerecord', 'lesson');
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}
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while (($btpage->qtype != LESSON_BRANCHTABLE) AND ($btpage->prevpageid > 0)) {
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$btpageid = $btpage->prevpageid;
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if (!$btpage = $DB->get_record("lesson_pages", array("id" => $btpageid))) {
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print_error('cannotfindpagerecord', 'lesson');
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}
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}
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if ($btpage->qtype == LESSON_BRANCHTABLE) {
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$newpage = new stdClass;
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$newpage->lessonid = $lesson->id;
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$newpage->prevpageid = $pageid;
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$newpage->nextpageid = $page->nextpageid;
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$newpage->qtype = LESSON_ENDOFBRANCH;
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$newpage->timecreated = $timenow;
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$newpage->title = get_string("endofbranch", "lesson");
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$newpage->contents = get_string("endofbranch", "lesson");
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if (!$newpageid = $DB->insert_record("lesson_pages", $newpage)) {
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print_error('cannotinsertpage', 'lesson');
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}
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// update the linked list...
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if (!$DB->set_field("lesson_pages", "nextpageid", $newpageid, array("id" => $pageid))) {
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print_error('cannotupdatelink', 'lesson');
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}
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if ($page->nextpageid) {
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// the new page is not the last page
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if (!$DB->set_field("lesson_pages", "prevpageid", $newpageid, array("id" => $page->nextpageid))) {
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print_error('cannotupdatelink', 'lesson');
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}
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}
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// ..and the single "answer"
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$newanswer = new stdClass;
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$newanswer->lessonid = $lesson->id;
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$newanswer->pageid = $newpageid;
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$newanswer->timecreated = $timenow;
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$newanswer->jumpto = $btpageid;
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if(!$newanswerid = $DB->insert_record("lesson_answers", $newanswer)) {
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print_error('cannotinsertanswer', 'lesson');
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}
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lesson_set_message(get_string('addedanendofbranch', 'lesson'), 'notifysuccess');
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} else {
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lesson_set_message(get_string('nobranchtablefound', 'lesson'));
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}
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redirect("$CFG->wwwroot/mod/lesson/edit.php?id=$cm->id");
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?>
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