mirror of
https://github.com/moodle/moodle.git
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904 lines
36 KiB
PHP
904 lines
36 KiB
PHP
<?php // $Id$
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/**
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* Functions used to show question editing interface
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*
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*
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* @author Martin Dougiamas and many others. This has recently been extensively
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* rewritten by members of the Serving Mathematics project
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* {@link http://maths.york.ac.uk/serving_maths}
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* @license http://www.gnu.org/copyleft/gpl.html GNU Public License
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* @package questionbank
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*/
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require_once($CFG->libdir.'/questionlib.php');
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define('DEFAULT_QUESTIONS_PER_PAGE', 20);
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function get_module_from_cmid($cmid){
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global $CFG;
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if (!$cmrec = get_record_sql("SELECT cm.*, md.name as modname
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FROM {$CFG->prefix}course_modules cm,
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{$CFG->prefix}modules md
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WHERE cm.id = '$cmid' AND
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md.id = cm.module")){
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error('cmunknown');
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} elseif (!$modrec =get_record($cmrec->modname, 'id', $cmrec->instance)) {
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error('cmunknown');
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}
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$modrec->instance = $modrec->id;
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$modrec->cmid = $cmrec->id;
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return array($modrec, $cmrec);
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}
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/**
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* Function to read all questions for category into big array
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*
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* @param int $category category number
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* @param bool $noparent if true only questions with NO parent will be selected
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* @param bool $recurse include subdirectories
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* @param bool $export set true if this is called by questionbank export
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* @author added by Howard Miller June 2004
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*/
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function get_questions_category( $category, $noparent=false, $recurse=true, $export=true ) {
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global $QTYPES;
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// questions will be added to an array
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$qresults = array();
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// build sql bit for $noparent
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$npsql = '';
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if ($noparent) {
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$npsql = " and parent='0' ";
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}
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// get (list) of categories
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if ($recurse) {
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$categorylist = question_categorylist( $category->id );
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}
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else {
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$categorylist = $category->id;
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}
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// get the list of questions for the category
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if ($questions = get_records_select("question","category IN ($categorylist) $npsql", "qtype, name ASC")) {
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// iterate through questions, getting stuff we need
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foreach($questions as $question) {
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$questiontype = $QTYPES[$question->qtype];
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$question->export_process = $export;
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$questiontype->get_question_options( $question );
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$qresults[] = $question;
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}
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}
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return $qresults;
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}
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function question_can_delete_cat($todelete){
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global $CFG;
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$record = get_record_sql("SELECT count(*) as count, c1.contextid as contextid FROM {$CFG->prefix}question_categories c1,
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{$CFG->prefix}question_categories c2 WHERE c2.id = $todelete
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AND c1.contextid = c2.contextid GROUP BY c1.contextid");
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$contextid = $record->contextid;
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$count = $record->count;
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if ($count < 2) {
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error('You can\'t delete that category it is the default category for this context.');
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} else {
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require_capability('moodle/question:managecategory', get_context_instance_by_id($contextid));
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}
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}
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/**
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* prints a form to choose categories
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*/
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function question_category_form($contexts, $pageurl, $current, $recurse=1, $showhidden=false, $showquestiontext=false) {
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global $CFG;
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/// Get all the existing categories now
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$catmenu = question_category_options($contexts, false, 0, true);
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$strcategory = get_string('category', 'quiz');
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$strshow = get_string('show', 'quiz');
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$streditcats = get_string('editcategories', 'quiz');
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popup_form ('edit.php?'.$pageurl->get_query_string().'&category=', $catmenu, 'catmenu', $current, '', '', '', false, 'self', "<strong>$strcategory</strong>");
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echo '<form method="get" action="edit.php" id="displayoptions">';
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echo "<fieldset class='invisiblefieldset'>";
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echo $pageurl->hidden_params_out(array('recurse', 'showhidden', 'showquestiontext'));
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question_category_form_checkbox('recurse', $recurse);
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question_category_form_checkbox('showhidden', $showhidden);
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question_category_form_checkbox('showquestiontext', $showquestiontext);
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echo '<noscript><div class="centerpara"><input type="submit" value="'. get_string('go') .'" />';
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echo '</div></noscript></fieldset></form>';
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}
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/**
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* Private funciton to help the preceeding function.
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*/
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function question_category_form_checkbox($name, $checked) {
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echo '<div><input type="hidden" id="' . $name . '_off" name="' . $name . '" value="0" />';
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echo '<input type="checkbox" id="' . $name . '_on" name="' . $name . '" value="1"';
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if ($checked) {
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echo ' checked="checked"';
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}
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echo ' onchange="getElementById(\'displayoptions\').submit(); return true;" />';
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echo '<label for="' . $name . '_on">';
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print_string($name, 'quiz');
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echo "</label></div>\n";
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}
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/**
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* Prints the table of questions in a category with interactions
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*
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* @param object $course The course object
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* @param int $categoryid The id of the question category to be displayed
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* @param int $cm The course module record if we are in the context of a particular module, 0 otherwise
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* @param int $recurse This is 1 if subcategories should be included, 0 otherwise
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* @param int $page The number of the page to be displayed
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* @param int $perpage Number of questions to show per page
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* @param boolean $showhidden True if also hidden questions should be displayed
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* @param boolean $showquestiontext whether the text of each question should be shown in the list
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*/
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function question_list($contexts, $pageurl, $categoryandcontext, $cm = null,
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$recurse=1, $page=0, $perpage=100, $showhidden=false, $sortorder='typename', $sortorderdecoded='qtype, name ASC',
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$showquestiontext = false, $addcontexts = array()) {
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global $QTYPE_MENU, $USER, $CFG, $THEME, $COURSE;
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list($categoryid, $contextid)= explode(',', $categoryandcontext);
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$qtypemenu = $QTYPE_MENU;
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$strcategory = get_string("category", "quiz");
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$strquestion = get_string("question", "quiz");
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$straddquestions = get_string("addquestions", "quiz");
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$strimportquestions = get_string("importquestions", "quiz");
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$strexportquestions = get_string("exportquestions", "quiz");
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$strnoquestions = get_string("noquestions", "quiz");
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$strselect = get_string("select", "quiz");
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$strselectall = get_string("selectall", "quiz");
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$strselectnone = get_string("selectnone", "quiz");
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$strcreatenewquestion = get_string("createnewquestion", "quiz");
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$strquestionname = get_string("questionname", "quiz");
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$strdelete = get_string("delete");
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$stredit = get_string("edit");
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$strmove = get_string('moveqtoanothercontext', 'question');
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$strview = get_string("view");
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$straction = get_string("action");
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$strrestore = get_string('restore');
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$strtype = get_string("type", "quiz");
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$strcreatemultiple = get_string("createmultiple", "quiz");
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$strpreview = get_string("preview","quiz");
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if (!$categoryid) {
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echo "<p style=\"text-align:center;\"><b>";
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print_string("selectcategoryabove", "quiz");
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echo "</b></p>";
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return;
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}
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if (!$category = get_record('question_categories', 'id', $categoryid, 'contextid', $contextid)) {
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notify('Category not found!');
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return;
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}
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$catcontext = get_context_instance_by_id($contextid);
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$canadd = has_capability('moodle/question:add', $catcontext);
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//check for capabilities on all questions in category, will also apply to sub cats.
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$caneditall =has_capability('moodle/question:editall', $catcontext);
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$canuseall =has_capability('moodle/question:useall', $catcontext);
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$canmoveall =has_capability('moodle/question:moveall', $catcontext);
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if ($cm AND $cm->modname == 'quiz') {
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$quizid = $cm->instance;
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} else {
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$quizid = 0;
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}
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$returnurl = $pageurl->out();
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$questionurl = new moodle_url("$CFG->wwwroot/question/question.php",
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array('returnurl' => $returnurl));
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if ($cm!==null){
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$questionurl->param('cmid', $cm->id);
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} else {
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$questionurl->param('courseid', $COURSE->id);
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}
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$questionmoveurl = new moodle_url("$CFG->wwwroot/question/contextmoveq.php",
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array('returnurl' => $returnurl));
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if ($cm!==null){
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$questionmoveurl->param('cmid', $cm->id);
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} else {
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$questionmoveurl->param('courseid', $COURSE->id);
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}
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echo '<div class="boxaligncenter">';
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$formatoptions = new stdClass;
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$formatoptions->noclean = true;
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echo format_text($category->info, FORMAT_MOODLE, $formatoptions, $COURSE->id);
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echo '<table><tr>';
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if ($canadd) {
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echo '<td valign="top" align="right">';
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popup_form ($questionurl->out(false, array('category' => $category->id)).'&qtype=', $qtypemenu, "addquestion", "", "choose", "", "", false, "self", "<strong>$strcreatenewquestion</strong>");
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echo '</td><td valign="top" align="right">';
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helpbutton("questiontypes", $strcreatenewquestion, "quiz");
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echo '</td>';
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}
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else {
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echo '<td>';
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print_string('nopermissionadd', 'question');
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echo '</td>';
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}
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echo '</tr></table>';
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echo '</div>';
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$categorylist = ($recurse) ? question_categorylist($category->id) : $category->id;
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// hide-feature
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$showhidden = $showhidden ? '' : " AND hidden = '0'";
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if (!$totalnumber = count_records_select('question', "category IN ($categorylist) AND parent = '0' $showhidden")) {
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echo "<p style=\"text-align:center;\">";
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print_string("noquestions", "quiz");
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echo "</p>";
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return;
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}
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if (!$questions = get_records_select('question', "category IN ($categorylist) AND parent = '0' $showhidden", $sortorderdecoded, '*', $page*$perpage, $perpage)) {
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// There are no questions on the requested page.
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$page = 0;
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if (!$questions = get_records_select('question', "category IN ($categorylist) AND parent = '0' $showhidden", $sortorderdecoded, '*', 0, $perpage)) {
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// There are no questions at all
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echo "<p style=\"text-align:center;\">";
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print_string("noquestions", "quiz");
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echo "</p>";
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return;
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}
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}
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print_paging_bar($totalnumber, $page, $perpage, $pageurl, 'qpage');
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echo question_sort_options($pageurl, $sortorder);
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echo '<form method="post" action="edit.php">';
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echo '<fieldset class="invisiblefieldset" style="display: block;">';
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echo '<input type="hidden" name="sesskey" value="'.$USER->sesskey.'" />';
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echo $pageurl->hidden_params_out(array('qsortorder'));
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echo '<table id="categoryquestions" style="width: 100%"><tr>';
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echo "<th style=\"white-space:nowrap;\" class=\"header\" scope=\"col\">$straction</th>";
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echo "<th style=\"white-space:nowrap; text-align: left;\" class=\"header\" scope=\"col\">$strquestionname</th>
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<th style=\"white-space:nowrap; text-align: right;\" class=\"header\" scope=\"col\">$strtype</th>";
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echo "</tr>\n";
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foreach ($questions as $question) {
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$nameclass = '';
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$textclass = '';
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if ($question->hidden) {
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$nameclass = 'dimmed_text';
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$textclass = 'dimmed_text';
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}
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if ($showquestiontext) {
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$nameclass .= ' header';
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}
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if ($nameclass) {
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$nameclass = 'class="' . $nameclass . '"';
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}
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if ($textclass) {
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$textclass = 'class="' . $textclass . '"';
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}
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echo "<tr>\n<td style=\"white-space:nowrap;\" $nameclass>\n";
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$canuseq = question_has_capability_on($question, 'use', $question->category);
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if (function_exists('module_specific_actions')) {
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echo module_specific_actions($pageurl, $question->id, $cm->id, $canuseq);
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}
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// preview
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if ($canuseq) {
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$quizorcourseid = $quizid?('&quizid=' . $quizid):('&courseid=' .$COURSE->id);
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link_to_popup_window('/question/preview.php?id=' . $question->id . $quizorcourseid, 'questionpreview',
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"<img src=\"$CFG->pixpath/t/preview.gif\" class=\"iconsmall\" alt=\"$strpreview\" />",
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0, 0, $strpreview, QUESTION_PREVIEW_POPUP_OPTIONS);
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}
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// edit, hide, delete question, using question capabilities, not quiz capabilieies
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if (question_has_capability_on($question, 'edit', $question->category) || question_has_capability_on($question, 'move', $question->category)) {
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echo "<a title=\"$stredit\" href=\"".$questionurl->out(false, array('id'=>$question->id))."\"><img
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src=\"$CFG->pixpath/t/edit.gif\" alt=\"$stredit\" /></a> ";
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} elseif (question_has_capability_on($question, 'view', $question->category)){
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echo "<a title=\"$strview\" href=\"".$questionurl->out(false, array('id'=>$question->id))."\"><img
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src=\"$CFG->pixpath/i/info.gif\" alt=\"$strview\" /></a> ";
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}
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if (question_has_capability_on($question, 'move', $question->category) && question_has_capability_on($question, 'view', $question->category)) {
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echo "<a title=\"$strmove\" href=\"".$questionurl->out(false, array('id'=>$question->id, 'movecontext'=>1))."\"><img
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src=\"$CFG->pixpath/t/move.gif\" alt=\"$strmove\" /></a> ";
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}
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if (question_has_capability_on($question, 'edit', $question->category)) {
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// hide-feature
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if($question->hidden) {
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echo "<a title=\"$strrestore\" href=\"edit.php?".$pageurl->get_query_string()."&unhide=$question->id&sesskey=$USER->sesskey\"><img
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src=\"$CFG->pixpath/t/restore.gif\" alt=\"$strrestore\" /></a>";
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} else {
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echo "<a title=\"$strdelete\" href=\"edit.php?".$pageurl->get_query_string()."&deleteselected=$question->id&q$question->id=1\"><img
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src=\"$CFG->pixpath/t/delete.gif\" alt=\"$strdelete\" /></a>";
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}
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}
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if ($caneditall || $canmoveall || $canuseall){
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echo " <input title=\"$strselect\" type=\"checkbox\" name=\"q$question->id\" value=\"1\" />";
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}
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echo "</td>\n";
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echo "<td $nameclass>" . format_string($question->name) . "</td>\n";
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echo "<td $nameclass style='text-align: right'>\n";
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print_question_icon($question);
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echo "</td>\n";
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echo "</tr>\n";
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if($showquestiontext){
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echo '<tr><td colspan="3" ' . $textclass . '>';
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$formatoptions = new stdClass;
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$formatoptions->noclean = true;
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$formatoptions->para = false;
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echo format_text($question->questiontext, $question->questiontextformat,
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$formatoptions, $COURSE->id);
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echo "</td></tr>\n";
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}
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}
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echo "</table>\n";
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$paging = print_paging_bar($totalnumber, $page, $perpage, $pageurl, 'qpage', false, true);
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if ($totalnumber > DEFAULT_QUESTIONS_PER_PAGE) {
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if ($perpage == DEFAULT_QUESTIONS_PER_PAGE) {
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$showall = '<a href="edit.php?'.$pageurl->get_query_string(array('qperpage'=>1000)).'">'.get_string('showall', 'moodle', $totalnumber).'</a>';
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} else {
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$showall = '<a href="edit.php?'.$pageurl->get_query_string(array('qperpage'=>DEFAULT_QUESTIONS_PER_PAGE)).'">'.get_string('showperpage', 'moodle', DEFAULT_QUESTIONS_PER_PAGE).'</a>';
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}
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if ($paging) {
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$paging = substr($paging, 0, strrpos($paging, '</div>'));
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$paging .= "<br />$showall</div>";
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} else {
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$paging = "<div class='paging'>$showall</div>";
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}
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}
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echo $paging;
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if ($caneditall || $canmoveall || $canuseall){
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echo '<a href="javascript:select_all_in(\'TABLE\',null,\'categoryquestions\');">'.$strselectall.'</a> /'.
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' <a href="javascript:deselect_all_in(\'TABLE\',null,\'categoryquestions\');">'.$strselectnone.'</a>';
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echo '<br />';
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echo '<strong> '.get_string('withselected', 'quiz').':</strong><br />';
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if (function_exists('module_specific_buttons')) {
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echo module_specific_buttons($cm->id);
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}
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// print delete and move selected question
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if ($caneditall) {
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echo '<input type="submit" name="deleteselected" value="'.$strdelete."\" />\n";
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}
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if ($canmoveall && count($addcontexts)) {
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echo '<input type="submit" name="move" value="'.get_string('moveto', 'quiz')."\" />\n";
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question_category_select_menu($addcontexts, false, 0, "$category->id,$category->contextid");
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}
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if (function_exists('module_specific_controls') && $canuseall) {
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echo module_specific_controls($totalnumber, $recurse, $category, $cm->id);
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}
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}
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echo '</fieldset>';
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echo "</form>\n";
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}
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function question_sort_options($pageurl, $sortorder){
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global $USER;
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//sort options
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$html = "<div class=\"mdl-align\">";
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$html .= '<form method="post" action="edit.php">';
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$html .= '<fieldset class="invisiblefieldset" style="display: block;">';
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$html .= '<input type="hidden" name="sesskey" value="'.$USER->sesskey.'" />';
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$html .= $pageurl->hidden_params_out(array('qsortorder'));
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$sortoptions = array('alpha' => get_string("sortalpha", "quiz"),
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'typealpha' => get_string("sorttypealpha", "quiz"),
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'age' => get_string("sortage", "quiz"));
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$html .= choose_from_menu ($sortoptions, 'qsortorder', $sortorder, false, 'this.form.submit();', '0', true);
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$html .= '<noscript><div><input type="submit" value="'.get_string("sortsubmit", "quiz").'" /></div></noscript>';
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$html .= '</fieldset>';
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$html .= "</form>\n";
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$html .= "</div>\n";
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return $html;
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}
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function question_showbank_actions($pageurl, $cm){
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global $CFG;
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/// Now, check for commands on this page and modify variables as necessary
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if (isset($_REQUEST['move']) and confirm_sesskey()) { /// Move selected questions to new category
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$category = required_param('category', PARAM_SEQUENCE);
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list($tocategoryid, $contextid) = explode(',', $category);
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if (! $tocategory = get_record('question_categories', 'id', $tocategoryid, 'contextid', $contextid)) {
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error('Could not find category record');
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|
}
|
|
$tocontext = get_context_instance_by_id($contextid);
|
|
require_capability('moodle/question:add', $tocontext);
|
|
$questionids = array();
|
|
foreach ($_POST as $key => $value) { // Parse input for question ids
|
|
if (preg_match('!^q([0-9]+)$!', $key, $matches)) {
|
|
$key = $matches[1];
|
|
$questionids[] = $key;
|
|
}
|
|
}
|
|
if ($questionids){
|
|
$questionidlist = join($questionids, ',');
|
|
$sql = "SELECT q.*, c.contextid FROM {$CFG->prefix}question q, {$CFG->prefix}question_categories c WHERE q.id IN ($questionidlist) AND c.id = q.category";
|
|
if (!$questions = get_records_sql($sql)){
|
|
print_error('questiondoesnotexist', 'question', $pageurl->out());
|
|
}
|
|
$checkforfiles = false;
|
|
foreach ($questions as $question){
|
|
//check capabilities
|
|
question_require_capability_on($question, 'move');
|
|
$fromcontext = get_context_instance_by_id($question->contextid);
|
|
if (get_filesdir_from_context($fromcontext) != get_filesdir_from_context($tocontext)){
|
|
$checkforfiles = true;
|
|
}
|
|
}
|
|
$returnurl = $pageurl->out(false, array('category'=>"$tocategoryid,$contextid"));
|
|
if (!$checkforfiles){
|
|
foreach ($questionids as $questionid){
|
|
//move question
|
|
if (!set_field('question', 'category', $tocategory->id, 'id', $questionid)) {
|
|
error('Could not update category field');
|
|
}
|
|
}
|
|
redirect($returnurl);
|
|
} else {
|
|
$movecontexturl = new moodle_url($CFG->wwwroot.'/question/contextmoveq.php',
|
|
array('returnurl' => $returnurl,
|
|
'ids'=>$questionidlist,
|
|
'tocatid'=> $tocategoryid));
|
|
if ($cm){
|
|
$movecontexturl->param('cmid', $cm->id);
|
|
} else {
|
|
$movecontexturl->param('courseid', $COURSE->id);
|
|
}
|
|
redirect($movecontexturl->out());
|
|
}
|
|
}
|
|
}
|
|
|
|
if (isset($_REQUEST['deleteselected'])) { // delete selected questions from the category
|
|
|
|
if (isset($_REQUEST['confirm']) and confirm_sesskey()) { // teacher has already confirmed the action
|
|
$deleteselected = required_param('deleteselected');
|
|
if ($_REQUEST['confirm'] == md5($deleteselected)) {
|
|
if ($questionlist = explode(',', $deleteselected)) {
|
|
// for each question either hide it if it is in use or delete it
|
|
foreach ($questionlist as $questionid) {
|
|
question_require_capability_on($questionid, 'edit');
|
|
if (record_exists('quiz_question_instances', 'question', $questionid) or
|
|
record_exists('question_states', 'originalquestion', $questionid)) {
|
|
if (!set_field('question', 'hidden', 1, 'id', $questionid)) {
|
|
question_require_capability_on($questionid, 'edit');
|
|
error('Was not able to hide question');
|
|
}
|
|
} else {
|
|
delete_question($questionid);
|
|
}
|
|
}
|
|
}
|
|
redirect($pageurl->out());
|
|
} else {
|
|
error("Confirmation string was incorrect");
|
|
}
|
|
|
|
|
|
}
|
|
}
|
|
|
|
// Unhide a question
|
|
if(isset($_REQUEST['unhide']) && confirm_sesskey()) {
|
|
$unhide = required_param('unhide', PARAM_INT);
|
|
question_require_capability_on($unhide, 'edit');
|
|
if(!set_field('question', 'hidden', 0, 'id', $unhide)) {
|
|
error("Failed to unhide the question.");
|
|
}
|
|
redirect($pageurl->out());
|
|
}
|
|
}
|
|
/**
|
|
* Shows the question bank editing interface.
|
|
*
|
|
* The function also processes a number of actions:
|
|
*
|
|
* Actions affecting the question pool:
|
|
* move Moves a question to a different category
|
|
* deleteselected Deletes the selected questions from the category
|
|
* Other actions:
|
|
* category Chooses the category
|
|
* displayoptions Sets display options
|
|
*
|
|
* @author Martin Dougiamas and many others. This has recently been extensively
|
|
* rewritten by Gustav Delius and other members of the Serving Mathematics project
|
|
* {@link http://maths.york.ac.uk/serving_maths}
|
|
* @param moodle_url $pageurl object representing this pages url.
|
|
*/
|
|
function question_showbank($tabname, $contexts, $pageurl, $cm, $page, $perpage, $sortorder, $sortorderdecoded, $cat, $recurse, $showhidden, $showquestiontext){
|
|
global $COURSE;
|
|
|
|
if (isset($_REQUEST['deleteselected'])){ // teacher still has to confirm
|
|
// make a list of all the questions that are selected
|
|
$rawquestions = $_REQUEST;
|
|
$questionlist = ''; // comma separated list of ids of questions to be deleted
|
|
$questionnames = ''; // string with names of questions separated by <br /> with
|
|
// an asterix in front of those that are in use
|
|
$inuse = false; // set to true if at least one of the questions is in use
|
|
foreach ($rawquestions as $key => $value) { // Parse input for question ids
|
|
if (preg_match('!^q([0-9]+)$!', $key, $matches)) {
|
|
$key = $matches[1]; $questionlist .= $key.',';
|
|
question_require_capability_on($key, 'edit');
|
|
if (record_exists('quiz_question_instances', 'question', $key) or
|
|
record_exists('question_states', 'originalquestion', $key)) {
|
|
$questionnames .= '* ';
|
|
$inuse = true;
|
|
}
|
|
$questionnames .= get_field('question', 'name', 'id', $key).'<br />';
|
|
}
|
|
}
|
|
if (!$questionlist) { // no questions were selected
|
|
redirect($pageurl->out());
|
|
}
|
|
$questionlist = rtrim($questionlist, ',');
|
|
|
|
// Add an explanation about questions in use
|
|
if ($inuse) {
|
|
$questionnames .= '<br />'.get_string('questionsinuse', 'quiz');
|
|
}
|
|
notice_yesno(get_string("deletequestionscheck", "quiz", $questionnames),
|
|
$pageurl->out_action(array('deleteselected'=>$questionlist, 'confirm'=>md5($questionlist))),
|
|
$pageurl->out_action());
|
|
|
|
echo '</td></tr>';
|
|
echo '</table>';
|
|
print_footer($COURSE);
|
|
exit;
|
|
}
|
|
|
|
|
|
// starts with category selection form
|
|
print_box_start('generalbox questionbank');
|
|
print_heading(get_string('questionbank', 'question'), '', 2);
|
|
question_category_form($contexts->having_one_edit_tab_cap($tabname), $pageurl, $cat, $recurse, $showhidden, $showquestiontext);
|
|
|
|
// continues with list of questions
|
|
question_list($contexts->having_one_edit_tab_cap($tabname), $pageurl, $cat, isset($cm) ? $cm : null,
|
|
$recurse, $page, $perpage, $showhidden, $sortorder, $sortorderdecoded, $showquestiontext,
|
|
$contexts->having_cap('moodle/question:add'));
|
|
|
|
print_box_end();
|
|
}
|
|
/**
|
|
* Common setup for all pages for editing questions.
|
|
* @param string $edittab code for this edit tab
|
|
* @param boolean $requirecmid require cmid? default false
|
|
* @param boolean $requirecourseid require courseid, if cmid is not given? default true
|
|
* @return array $thispageurl, $contexts, $cmid, $cm, $module, $pagevars
|
|
*/
|
|
function question_edit_setup($edittab, $requirecmid = false, $requirecourseid = true){
|
|
global $COURSE, $QUESTION_EDITTABCAPS;
|
|
|
|
//$thispageurl is used to construct urls for all question edit pages we link to from this page. It contains an array
|
|
//of parameters that are passed from page to page.
|
|
$thispageurl = new moodle_url();
|
|
if ($requirecmid){
|
|
$cmid =required_param('cmid', PARAM_INT);
|
|
} else {
|
|
$cmid = optional_param('cmid', 0, PARAM_INT);
|
|
}
|
|
if ($cmid){
|
|
list($module, $cm) = get_module_from_cmid($cmid);
|
|
$courseid = $cm->course;
|
|
$thispageurl->params(compact('cmid'));
|
|
require_login($courseid, false, $cm);
|
|
$thiscontext = get_context_instance(CONTEXT_MODULE, $cmid);
|
|
} else {
|
|
$module = null;
|
|
$cm = null;
|
|
if ($requirecourseid){
|
|
$courseid = required_param('courseid', PARAM_INT);
|
|
} else {
|
|
$courseid = optional_param('courseid', 0, PARAM_INT);
|
|
}
|
|
if ($courseid){
|
|
$thispageurl->params(compact('courseid'));
|
|
require_login($courseid, false);
|
|
$thiscontext = get_context_instance(CONTEXT_COURSE, $courseid);
|
|
} else {
|
|
$thiscontext = null;
|
|
}
|
|
}
|
|
|
|
if ($thiscontext){
|
|
$contexts = new question_edit_contexts($thiscontext);
|
|
$contexts->require_one_edit_tab_cap($edittab);
|
|
|
|
} else {
|
|
$contexts = null;
|
|
}
|
|
|
|
|
|
|
|
$pagevars['qpage'] = optional_param('qpage', -1, PARAM_INT);
|
|
|
|
//pass 'cat' from page to page and when 'category' comes from a drop down menu
|
|
//then we also reset the qpage so we go to page 1 of
|
|
//a new cat.
|
|
$pagevars['cat'] = optional_param('cat', 0, PARAM_SEQUENCE);// if empty will be set up later
|
|
if ($category = optional_param('category', 0, PARAM_SEQUENCE)){
|
|
$pagevars['cat'] = $category;
|
|
$pagevars['qpage'] = 0;
|
|
}
|
|
if ($pagevars['cat']){
|
|
$thispageurl->param('cat', $pagevars['cat']);
|
|
}
|
|
if ($pagevars['qpage'] > -1) {
|
|
$thispageurl->param('qpage', $pagevars['qpage']);
|
|
} else {
|
|
$pagevars['qpage'] = 0;
|
|
}
|
|
|
|
$pagevars['qperpage'] = optional_param('qperpage', -1, PARAM_INT);
|
|
if ($pagevars['qperpage'] > -1) {
|
|
$thispageurl->param('qperpage', $pagevars['qperpage']);
|
|
} else {
|
|
$pagevars['qperpage'] = DEFAULT_QUESTIONS_PER_PAGE;
|
|
}
|
|
|
|
$sortoptions = array('alpha' => 'name, qtype ASC',
|
|
'typealpha' => 'qtype, name ASC',
|
|
'age' => 'id ASC');
|
|
|
|
if ($sortorder = optional_param('qsortorder', '', PARAM_ALPHA)) {
|
|
$pagevars['qsortorderdecoded'] = $sortoptions[$sortorder];
|
|
$pagevars['qsortorder'] = $sortorder;
|
|
$thispageurl->param('qsortorder', $sortorder);
|
|
} else {
|
|
$pagevars['qsortorderdecoded'] = $sortoptions['typealpha'];
|
|
$pagevars['qsortorder'] = 'typealpha';
|
|
}
|
|
|
|
$defaultcategory = question_make_default_categories($contexts->all());
|
|
|
|
$contextlistarr = array();
|
|
foreach ($contexts->having_one_edit_tab_cap($edittab) as $context){
|
|
$contextlistarr[] = "'$context->id'";
|
|
}
|
|
$contextlist = join($contextlistarr, ' ,');
|
|
if (!empty($pagevars['cat'])){
|
|
$catparts = explode(',', $pagevars['cat']);
|
|
if (!$catparts[0] || (FALSE !== array_search($catparts[1], $contextlistarr)) || !count_records_select("question_categories", "id = '".$catparts[0]."' AND contextid = $catparts[1]")) {
|
|
error(get_string('invalidcategory', 'quiz'));
|
|
}
|
|
} else {
|
|
$category = $defaultcategory;
|
|
$pagevars['cat'] = "$category->id,$category->contextid";
|
|
}
|
|
|
|
if(($recurse = optional_param('recurse', -1, PARAM_BOOL)) != -1) {
|
|
$pagevars['recurse'] = $recurse;
|
|
$thispageurl->param('recurse', $recurse);
|
|
} else {
|
|
$pagevars['recurse'] = 1;
|
|
}
|
|
|
|
if(($showhidden = optional_param('showhidden', -1, PARAM_BOOL)) != -1) {
|
|
$pagevars['showhidden'] = $showhidden;
|
|
$thispageurl->param('showhidden', $showhidden);
|
|
} else {
|
|
$pagevars['showhidden'] = 0;
|
|
}
|
|
|
|
if(($showquestiontext = optional_param('showquestiontext', -1, PARAM_BOOL)) != -1) {
|
|
$pagevars['showquestiontext'] = $showquestiontext;
|
|
$thispageurl->param('showquestiontext', $showquestiontext);
|
|
} else {
|
|
$pagevars['showquestiontext'] = 0;
|
|
}
|
|
|
|
//category list page
|
|
$pagevars['cpage'] = optional_param('cpage', 1, PARAM_INT);
|
|
if ($pagevars['cpage'] != 1){
|
|
$thispageurl->param('cpage', $pagevars['cpage']);
|
|
}
|
|
|
|
|
|
return array($thispageurl, $contexts, $cmid, $cm, $module, $pagevars);
|
|
}
|
|
class question_edit_contexts{
|
|
var $allcontexts;
|
|
/**
|
|
* @param current context
|
|
*/
|
|
function question_edit_contexts($thiscontext){
|
|
$pcontextids = get_parent_contexts($thiscontext);
|
|
$contexts = array($thiscontext);
|
|
foreach ($pcontextids as $pcontextid){
|
|
$contexts[] = get_context_instance_by_id($pcontextid);
|
|
}
|
|
$this->allcontexts = $contexts;
|
|
}
|
|
/**
|
|
* @return array all parent contexts
|
|
*/
|
|
function all(){
|
|
return $this->allcontexts;
|
|
}
|
|
/**
|
|
* @return object lowest context which must be either the module or course context
|
|
*/
|
|
function lowest(){
|
|
return $this->allcontexts[0];
|
|
}
|
|
/**
|
|
* @param string $cap capability
|
|
* @return array parent contexts having capability, zero based index
|
|
*/
|
|
function having_cap($cap){
|
|
$contextswithcap = array();
|
|
foreach ($this->allcontexts as $context){
|
|
if (has_capability($cap, $context)){
|
|
$contextswithcap[] = $context;
|
|
}
|
|
}
|
|
return $contextswithcap;
|
|
}
|
|
/**
|
|
* @param array $caps capabilities
|
|
* @return array parent contexts having at least one of $caps, zero based index
|
|
*/
|
|
function having_one_cap($caps){
|
|
$contextswithacap = array();
|
|
foreach ($this->allcontexts as $context){
|
|
foreach ($caps as $cap){
|
|
if (has_capability($cap, $context)){
|
|
$contextswithacap[] = $context;
|
|
break; //done with caps loop
|
|
}
|
|
}
|
|
}
|
|
return $contextswithacap;
|
|
}
|
|
/**
|
|
* @param string $tabname edit tab name
|
|
* @return array parent contexts having at least one of $caps, zero based index
|
|
*/
|
|
function having_one_edit_tab_cap($tabname){
|
|
global $QUESTION_EDITTABCAPS;
|
|
return $this->having_one_cap($QUESTION_EDITTABCAPS[$tabname]);
|
|
}
|
|
/**
|
|
* Has at least one parent context got the cap $cap?
|
|
*
|
|
* @param string $cap capability
|
|
* @return boolean
|
|
*/
|
|
function have_cap($cap){
|
|
return (count($this->having_cap($cap)));
|
|
}
|
|
|
|
/**
|
|
* Has at least one parent context got one of the caps $caps?
|
|
*
|
|
* @param string $cap capability
|
|
* @return boolean
|
|
*/
|
|
function have_one_cap($caps){
|
|
foreach ($caps as $cap){
|
|
if ($this->have_cap($cap)){
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
/**
|
|
* Has at least one parent context got one of the caps for actions on $tabname
|
|
*
|
|
* @param string $tabname edit tab name
|
|
* @return boolean
|
|
*/
|
|
function have_one_edit_tab_cap($tabname){
|
|
global $QUESTION_EDITTABCAPS;
|
|
return $this->have_one_cap($QUESTION_EDITTABCAPS[$tabname]);
|
|
}
|
|
/**
|
|
* Throw error if at least one parent context hasn't got the cap $cap
|
|
*
|
|
* @param string $cap capability
|
|
*/
|
|
function require_cap($cap){
|
|
if (!$this->have_cap($cap)){
|
|
print_error('nopermissions', '', '', $cap);
|
|
}
|
|
}
|
|
/**
|
|
* Throw error if at least one parent context hasn't got one of the caps $caps
|
|
*
|
|
* @param array $cap capabilities
|
|
*/
|
|
function require_one_cap($caps){
|
|
if (!$this->have_one_cap($caps)){
|
|
$capsstring = join($caps, ', ');
|
|
print_error('nopermissions', '', '', $capsstring);
|
|
}
|
|
}
|
|
/**
|
|
* Throw error if at least one parent context hasn't got one of the caps $caps
|
|
*
|
|
* @param string $tabname edit tab name
|
|
*/
|
|
function require_one_edit_tab_cap($tabname){
|
|
if (!$this->have_one_edit_tab_cap($tabname)){
|
|
print_error('nopermissions', '', '', 'access question edit tab '.$tabname);
|
|
}
|
|
}
|
|
}
|
|
|
|
//capabilities for each page of edit tab.
|
|
//this determines which contexts' categories are available. At least one
|
|
//page is displayed if user has one of the capability on at least one context
|
|
$QUESTION_EDITTABCAPS = array(
|
|
'editq' => array('moodle/question:add',
|
|
'moodle/question:editmine',
|
|
'moodle/question:editall',
|
|
'moodle/question:viewmine',
|
|
'moodle/question:viewall',
|
|
'moodle/question:usemine',
|
|
'moodle/question:useall',
|
|
'moodle/question:movemine',
|
|
'moodle/question:moveall'),
|
|
'questions'=>array('moodle/question:add',
|
|
'moodle/question:editmine',
|
|
'moodle/question:editall',
|
|
'moodle/question:viewmine',
|
|
'moodle/question:viewall',
|
|
'moodle/question:movemine',
|
|
'moodle/question:moveall'),
|
|
'categories'=>array('moodle/question:managecategory'),
|
|
'import'=>array('moodle/question:add'),
|
|
'export'=>array('moodle/question:viewall', 'moodle/question:viewmine'));
|
|
|
|
|
|
|
|
/**
|
|
* Make sure user is logged in as required in this context.
|
|
*/
|
|
function require_login_in_context($contextorid = null){
|
|
if (!is_object($contextorid)){
|
|
$context = get_context_instance_by_id($contextorid);
|
|
} else {
|
|
$context = $contextorid;
|
|
}
|
|
if ($context && ($context->contextlevel == CONTEXT_COURSE)) {
|
|
require_login($context->instanceid);
|
|
} else if ($context && ($context->contextlevel == CONTEXT_MODULE)) {
|
|
if ($cm = get_record('course_modules','id',$context->instanceid)) {
|
|
if (!$course = get_record('course', 'id', $cm->course)) {
|
|
error('Incorrect course.');
|
|
}
|
|
require_course_login($course, true, $cm);
|
|
|
|
} else {
|
|
error('Incorrect course module id.');
|
|
}
|
|
} else if ($context && ($context->contextlevel == CONTEXT_SYSTEM)) {
|
|
if (!empty($CFG->forcelogin)) {
|
|
require_login();
|
|
}
|
|
|
|
} else {
|
|
require_login();
|
|
}
|
|
}
|
|
?>
|