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315 lines
12 KiB
PHP
315 lines
12 KiB
PHP
<?php
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/**
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* Page for editing questions using the new form library.
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*
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* @author T.J.Hunt@open.ac.uk
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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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// Includes.
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require_once(dirname(__FILE__) . '/../config.php');
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require_once(dirname(__FILE__) . '/editlib.php');
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require_once($CFG->libdir . '/filelib.php');
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require_once($CFG->libdir . '/formslib.php');
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// Read URL parameters telling us which question to edit.
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$id = optional_param('id', 0, PARAM_INT); // question id
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$qtype = optional_param('qtype', '', PARAM_FILE);
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$categoryid = optional_param('category', 0, PARAM_INT);
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$cmid = optional_param('cmid', 0, PARAM_INT);
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$courseid = optional_param('courseid', 0, PARAM_INT);
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$wizardnow = optional_param('wizardnow', '', PARAM_ALPHA);
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$movecontext = optional_param('movecontext', 0, PARAM_BOOL); // Switch to make
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// question uneditable - form is displayed to edit category only
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$returnurl = optional_param('returnurl', 0, PARAM_LOCALURL);
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$appendqnumstring = optional_param('appendqnumstring', '', PARAM_ALPHA);
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$inpopup = optional_param('inpopup', 0, PARAM_BOOL);
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$url = new moodle_url('/question/question.php');
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if ($id !== 0) {
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$url->param('id', $id);
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}
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if ($qtype !== '') {
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$url->param('qtype', $qtype);
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}
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if ($categoryid !== 0) {
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$url->param('category', $categoryid);
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}
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if ($cmid !== 0) {
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$url->param('cmid', $cmid);
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}
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if ($courseid !== 0) {
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$url->param('courseid', $courseid);
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}
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if ($wizardnow !== '') {
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$url->param('wizardnow', $wizardnow);
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}
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if ($movecontext !== 0) {
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$url->param('movecontext', $movecontext);
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}
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if ($returnurl !== 0) {
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$url->param('returnurl', $returnurl);
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}
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if ($appendqnumstring !== '') {
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$url->param('appendqnumstring', $appendqnumstring);
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}
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if ($inpopup !== 0) {
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$url->param('inpopup', $inpopup);
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}
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$PAGE->set_url($url);
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if ($movecontext && !$id){
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print_error('questiondoesnotexist', 'question', $returnurl);
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}
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if ($cmid){
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list($module, $cm) = get_module_from_cmid($cmid);
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require_login($cm->course, false, $cm);
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$thiscontext = get_context_instance(CONTEXT_MODULE, $cmid);
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} elseif ($courseid) {
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require_login($courseid, false);
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$thiscontext = get_context_instance(CONTEXT_COURSE, $courseid);
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$module = null;
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$cm = null;
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} else {
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print_error('missingcourseorcmid', 'question');
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}
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$contexts = new question_edit_contexts($thiscontext);
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if (!$returnurl) {
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$returnurl = "{$CFG->wwwroot}/question/edit.php?courseid={$COURSE->id}";
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}
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if (optional_param('addcancel', false, PARAM_BOOL)) {
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redirect($returnurl);
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}
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if ($id) {
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if (!$question = $DB->get_record('question', array('id' => $id))) {
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print_error('questiondoesnotexist', 'question', $returnurl);
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}
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get_question_options($question, true);
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} else if ($categoryid && $qtype) { // only for creating new questions
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$question = new stdClass;
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$question->category = $categoryid;
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$question->qtype = $qtype;
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// Check that users are allowed to create this question type at the moment.
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$allowedtypes = question_type_menu();
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if (!isset($allowedtypes[$qtype])) {
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print_error('cannotenable', 'question', $returnurl, $qtype);
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}
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} else if ($categoryid) {
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// Category, but no qtype. They probably came from the addquestion.php
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// script without choosing a question type. Send them back.
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$addurl = new moodle_url('/question/addquestion.php', $url->params());
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$addurl->param('validationerror', 1);
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redirect($addurl);
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} else {
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print_error('notenoughdatatoeditaquestion', 'question', $returnurl);
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}
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// Validate the question category.
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if (!$category = $DB->get_record('question_categories', array('id' => $question->category))) {
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print_error('categorydoesnotexist', 'question', $returnurl);
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}
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// Check permissions
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$question->formoptions = new stdClass;
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$categorycontext = get_context_instance_by_id($category->contextid);
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$addpermission = has_capability('moodle/question:add', $categorycontext);
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if ($id) {
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$canview = question_has_capability_on($question, 'view');
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if ($movecontext){
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$question->formoptions->canedit = false;
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$question->formoptions->canmove = (question_has_capability_on($question, 'move') && $contexts->have_cap('moodle/question:add'));
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$question->formoptions->cansaveasnew = false;
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$question->formoptions->repeatelements = false;
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$question->formoptions->movecontext = true;
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$formeditable = true;
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question_require_capability_on($question, 'view');
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} else {
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$question->formoptions->canedit = question_has_capability_on($question, 'edit');
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$question->formoptions->canmove = (question_has_capability_on($question, 'move') && $addpermission);
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$question->formoptions->cansaveasnew = (($canview ||question_has_capability_on($question, 'edit')) && $addpermission);
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$question->formoptions->repeatelements = ($question->formoptions->canedit || $question->formoptions->cansaveasnew);
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$formeditable = $question->formoptions->canedit || $question->formoptions->cansaveasnew || $question->formoptions->canmove;
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$question->formoptions->movecontext = false;
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if (!$formeditable){
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question_require_capability_on($question, 'view');
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}
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}
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} else { // creating a new question
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require_capability('moodle/question:add', $categorycontext);
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$formeditable = true;
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$question->formoptions->repeatelements = true;
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$question->formoptions->movecontext = false;
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}
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// Validate the question type.
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if (!isset($QTYPES[$question->qtype])) {
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print_error('unknownquestiontype', 'question', $returnurl, $question->qtype);
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}
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$PAGE->set_pagetype('question-type-' . $question->qtype);
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// Create the question editing form.
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if ($wizardnow!=='' && !$movecontext){
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if (!method_exists($QTYPES[$question->qtype], 'next_wizard_form')){
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print_error('missingimportantcode', 'question', $returnurl, 'wizard form definition');
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} else {
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$mform = $QTYPES[$question->qtype]->next_wizard_form('question.php', $question, $wizardnow, $formeditable);
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}
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} else {
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$mform = $QTYPES[$question->qtype]->create_editing_form('question.php', $question, $category, $contexts, $formeditable);
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}
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if ($mform === null) {
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print_error('missingimportantcode', 'question', $returnurl, 'question editing form definition for "'.$question->qtype.'"');
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}
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$toform = fullclone($question); // send the question object and a few more parameters to the form
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$toform->category = "$category->id,$category->contextid";
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if ($formeditable && $id){
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$toform->categorymoveto = $toform->category;
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}
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$toform->appendqnumstring = $appendqnumstring;
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$toform->returnurl = $returnurl;
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$toform->movecontext = $movecontext;
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if ($cm !== null){
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$toform->cmid = $cm->id;
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$toform->courseid = $cm->course;
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} else {
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$toform->courseid = $COURSE->id;
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}
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$toform->inpopup = $inpopup;
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$mform->set_data($toform);
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if ($mform->is_cancelled()){
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if ($inpopup) {
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close_window();
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} else {
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$nexturl = new moodle_url($returnurl);
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$nexturl->param('lastchanged', $question->id);
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redirect($nexturl->out());
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}
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} elseif ($fromform = $mform->get_data()) {
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/// If we are saving as a copy, break the connection to the old question.
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if (!empty($fromform->makecopy)) {
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$question->id = 0;
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$question->hidden = 0; // Copies should not be hidden
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}
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/// Process the combination of usecurrentcat, categorymoveto and category form
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/// fields, so the save_question method only has to consider $fromform->category
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if (!empty($fromform->usecurrentcat)) {
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// $fromform->category is the right category to save in.
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} else {
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if (!empty($fromform->categorymoveto)) {
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$fromform->category = $fromform->categorymoveto;
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} else {
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// $fromform->category is the right category to save in.
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}
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}
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/// If we are moving a question, check we have permission to move it from
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/// whence it came. (Where we are moving to is validated by the form.)
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list($newcatid) = explode(',', $fromform->category);
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if (!empty($question->id) && $newcatid != $question->category) {
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question_require_capability_on($question, 'move');
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}
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/// Ensure we redirect back to the category the question is being saved into.
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$returnurl = new moodle_url($returnurl);
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$returnurl->param('category', $fromform->category);
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// TODO: it is sloppy to pass arounf full URLs through page parameters and some servers do not like that
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$returnurl = $returnurl->out(false);
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/// Call the appropriate method.
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if ($movecontext) {
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list($tocatid, $tocontextid) = explode(',', $fromform->categorymoveto);
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$tocontext = get_context_instance_by_id($tocontextid);
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require_capability('moodle/question:add', $tocontext);
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if (get_filesdir_from_context($categorycontext) != get_filesdir_from_context($tocontext)){
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$movecontexturl = new moodle_url('/question/contextmoveq.php',
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array('returnurl' => $returnurl,
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'ids'=>$question->id,
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'tocatid'=> $tocatid));
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if ($cmid){
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$movecontexturl->param('cmid', $cmid);
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} else {
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$movecontexturl->param('courseid', $COURSE->id);
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}
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redirect($movecontexturl);
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}
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}
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$question = $QTYPES[$question->qtype]->save_question($question, $fromform, $COURSE, $wizardnow, true);
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// a wizardpage from multipe pages questiontype like calculated may not allow editing the question tags
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if (!empty($CFG->usetags) && isset($fromform->tags)) {
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require_once($CFG->dirroot.'/tag/lib.php');
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tag_set('question', $question->id, $fromform->tags);
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}
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if (($QTYPES[$question->qtype]->finished_edit_wizard($fromform)) || $movecontext){
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if ($inpopup) {
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echo $OUTPUT->notification(get_string('changessaved'), '');
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close_window(3);
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} else {
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$nexturl = new moodle_url($returnurl);
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$nexturl->param('lastchanged', $question->id);
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if($appendqnumstring) {
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$nexturl->params(array($appendqnumstring=>($question->id), "sesskey"=>sesskey(), "cmid"=>$cmid));
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}
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redirect($nexturl);
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}
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} else {
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$nexturlparams = array('returnurl'=>$returnurl, 'appendqnumstring'=>$appendqnumstring);
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if (isset($fromform->nextpageparam) && is_array($fromform->nextpageparam)){
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$nexturlparams += $fromform->nextpageparam;//useful for passing data to the next page which is not saved in the database
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}
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$nexturlparams['id'] = $question->id;
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$nexturlparams['wizardnow'] = $fromform->wizard;
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$nexturl = new moodle_url('question.php', $nexturlparams);
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if ($cmid){
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$nexturl->param('cmid', $cmid);
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} else {
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$nexturl->param('courseid', $COURSE->id);
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}
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redirect($nexturl);
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}
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} else {
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$streditingquestion = $QTYPES[$question->qtype]->get_heading();
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$PAGE->set_title($streditingquestion);
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if ($cm !== null) {
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$strmodule = get_string('modulename', $cm->modname);
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$streditingmodule = get_string('editinga', 'moodle', $strmodule);
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$PAGE->navbar->add(get_string('modulenameplural', $cm->modname), new moodle_url('/mod/'.$cm->modname.'/index.php', array('id'=>$cm->course)));
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$PAGE->navbar->add(format_string($module->name), new moodle_url('/mod/'.$cm->modname.'/view.php', array('id'=>$cm->id)));
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if (stripos($returnurl, "$CFG->wwwroot/mod/{$cm->modname}/view.php")!== 0){
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//don't need this link if returnurl returns to view.php
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$PAGE->navbar->add($streditingmodule, $returnurl);
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}
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$PAGE->navbar->add($streditingquestion);
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echo $OUTPUT->header();
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} else {
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$strediting = '<a href="edit.php?courseid='.$COURSE->id.'">'.get_string("editquestions", "quiz").'</a> -> '.$streditingquestion;
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$PAGE->navbar->add(get_string('editquestions', "quiz"), $returnurl);
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$PAGE->navbar->add($streditingquestion);
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echo $OUTPUT->header();
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}
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// Display a heading, question editing form and possibly some extra content needed for
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// for this question type.
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$QTYPES[$question->qtype]->display_question_editing_page($mform, $question, $wizardnow);
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echo $OUTPUT->footer();
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}
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