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<?php
// This file is part of Moodle - http://moodle.org/
//
// Moodle is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Moodle is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
/**
* Page for editing questions.
*
* @package moodlecore
* @subpackage questionbank
* @copyright 1999 onwards Martin Dougiamas {@link http://moodle.com}
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
require_once(__DIR__ . '/../config.php');
require_once(__DIR__ . '/editlib.php');
require_once($CFG->libdir . '/filelib.php');
require_once($CFG->libdir . '/formslib.php');
// Read URL parameters telling us which question to edit.
$id = optional_param('id', 0, PARAM_INT); // question id
$makecopy = optional_param('makecopy', 0, PARAM_BOOL);
$qtype = optional_param('qtype', '', PARAM_COMPONENT);
$categoryid = optional_param('category', 0, PARAM_INT);
$cmid = optional_param('cmid', 0, PARAM_INT);
$courseid = optional_param('courseid', 0, PARAM_INT);
$wizardnow = optional_param('wizardnow', '', PARAM_ALPHA);
$originalreturnurl = optional_param('returnurl', 0, PARAM_LOCALURL);
$appendqnumstring = optional_param('appendqnumstring', '', PARAM_ALPHA);
$inpopup = optional_param('inpopup', 0, PARAM_BOOL);
$scrollpos = optional_param('scrollpos', 0, PARAM_INT);
$url = new moodle_url('/question/question.php');
if ($id !== 0) {
$url->param('id', $id);
}
if ($makecopy) {
$url->param('makecopy', $makecopy);
}
if ($qtype !== '') {
$url->param('qtype', $qtype);
}
if ($categoryid !== 0) {
$url->param('category', $categoryid);
}
if ($cmid !== 0) {
$url->param('cmid', $cmid);
}
if ($courseid !== 0) {
$url->param('courseid', $courseid);
}
if ($wizardnow !== '') {
$url->param('wizardnow', $wizardnow);
}
if ($originalreturnurl !== 0) {
$url->param('returnurl', $originalreturnurl);
}
if ($appendqnumstring !== '') {
$url->param('appendqnumstring', $appendqnumstring);
}
if ($inpopup !== 0) {
$url->param('inpopup', $inpopup);
}
if ($scrollpos) {
$url->param('scrollpos', $scrollpos);
}
$PAGE->set_url($url);
if ($cmid) {
$questionbankurl = new moodle_url('/question/edit.php', array('cmid' => $cmid));
} else {
$questionbankurl = new moodle_url('/question/edit.php', array('courseid' => $courseid));
}
navigation_node::override_active_url($questionbankurl);
if ($originalreturnurl) {
if (strpos($originalreturnurl, '/') !== 0) {
throw new coding_exception("returnurl must be a local URL starting with '/'. $originalreturnurl was given.");
}
$returnurl = new moodle_url($originalreturnurl);
} else {
$returnurl = $questionbankurl;
}
if ($scrollpos) {
$returnurl->param('scrollpos', $scrollpos);
}
if ($cmid){
list($module, $cm) = get_module_from_cmid($cmid);
require_login($cm->course, false, $cm);
$thiscontext = context_module::instance($cmid);
} elseif ($courseid) {
require_login($courseid, false);
$thiscontext = context_course::instance($courseid);
$module = null;
$cm = null;
} else {
print_error('missingcourseorcmid', 'question');
}
$contexts = new question_edit_contexts($thiscontext);
$PAGE->set_pagelayout('admin');
if (optional_param('addcancel', false, PARAM_BOOL)) {
redirect($returnurl);
}
if ($id) {
if (!$question = $DB->get_record('question', array('id' => $id))) {
print_error('questiondoesnotexist', 'question', $returnurl);
}
// We can use $COURSE here because it's been initialised as part of the
// require_login above. Passing it as the third parameter tells the function
// to filter the course tags by that course.
get_question_options($question, true, [$COURSE]);
} else if ($categoryid && $qtype) { // only for creating new questions
$question = new stdClass();
$question->category = $categoryid;
$question->qtype = $qtype;
$question->createdby = $USER->id;
// Check that users are allowed to create this question type at the moment.
if (!question_bank::qtype_enabled($qtype)) {
print_error('cannotenable', 'question', $returnurl, $qtype);
}
} else if ($categoryid) {
// Category, but no qtype. They probably came from the addquestion.php
// script without choosing a question type. Send them back.
$addurl = new moodle_url('/question/addquestion.php', $url->params());
$addurl->param('validationerror', 1);
redirect($addurl);
} else {
print_error('notenoughdatatoeditaquestion', 'question', $returnurl);
}
$qtypeobj = question_bank::get_qtype($question->qtype);
if (isset($question->categoryobject)) {
$category = $question->categoryobject;
} else {
// Validate the question category.
if (!$category = $DB->get_record('question_categories', array('id' => $question->category))) {
print_error('categorydoesnotexist', 'question', $returnurl);
}
}
// Check permissions
$question->formoptions = new stdClass();
$categorycontext = context::instance_by_id($category->contextid);
$question->contextid = $category->contextid;
$addpermission = has_capability('moodle/question:add', $categorycontext);
if ($id) {
$question->formoptions->canedit = question_has_capability_on($question, 'edit');
$question->formoptions->canmove = $addpermission && question_has_capability_on($question, 'move');
$question->formoptions->cansaveasnew = $addpermission &&
(question_has_capability_on($question, 'view') || $question->formoptions->canedit);
$question->formoptions->repeatelements = $question->formoptions->canedit || $question->formoptions->cansaveasnew;
$formeditable = $question->formoptions->canedit || $question->formoptions->cansaveasnew || $question->formoptions->canmove;
if (!$formeditable) {
question_require_capability_on($question, 'view');
}
if ($makecopy) {
// If we are duplicating a question, add some indication to the question name.
$question->name = get_string('questionnamecopy', 'question', $question->name);
$question->idnumber = null;
$question->beingcopied = true;
}
} else { // creating a new question
$question->formoptions->canedit = question_has_capability_on($question, 'edit');
$question->formoptions->canmove = (question_has_capability_on($question, 'move') && $addpermission);
$question->formoptions->cansaveasnew = false;
$question->formoptions->repeatelements = true;
$formeditable = true;
require_capability('moodle/question:add', $categorycontext);
}
$question->formoptions->mustbeusable = (bool) $appendqnumstring;
// Validate the question type.
$PAGE->set_pagetype('question-type-' . $question->qtype);
// Create the question editing form.
if ($wizardnow !== '') {
$mform = $qtypeobj->next_wizard_form('question.php', $question, $wizardnow, $formeditable);
} else {
$mform = $qtypeobj->create_editing_form('question.php', $question, $category, $contexts, $formeditable);
}
$toform = fullclone($question); // send the question object and a few more parameters to the form
$toform->category = "{$category->id},{$category->contextid}";
$toform->scrollpos = $scrollpos;
if ($formeditable && $id){
$toform->categorymoveto = $toform->category;
}
$toform->appendqnumstring = $appendqnumstring;
$toform->returnurl = $originalreturnurl;
$toform->makecopy = $makecopy;
if ($cm !== null){
$toform->cmid = $cm->id;
$toform->courseid = $cm->course;
} else {
$toform->courseid = $COURSE->id;
}
$toform->inpopup = $inpopup;
$mform->set_data($toform);
if ($mform->is_cancelled()) {
if ($inpopup) {
close_window();
} else {
redirect($returnurl);
}
} else if ($fromform = $mform->get_data()) {
// If we are saving as a copy, break the connection to the old question.
if ($makecopy) {
$question->id = 0;
$question->hidden = 0; // Copies should not be hidden.
}
/// Process the combination of usecurrentcat, categorymoveto and category form
/// fields, so the save_question method only has to consider $fromform->category
if (!empty($fromform->usecurrentcat)) {
// $fromform->category is the right category to save in.
} else {
if (!empty($fromform->categorymoveto)) {
$fromform->category = $fromform->categorymoveto;
} else {
// $fromform->category is the right category to save in.
}
}
/// If we are moving a question, check we have permission to move it from
/// whence it came. (Where we are moving to is validated by the form.)
list($newcatid, $newcontextid) = explode(',', $fromform->category);
if (!empty($question->id) && $newcatid != $question->category) {
$contextid = $newcontextid;
question_require_capability_on($question, 'move');
} else {
$contextid = $category->contextid;
}
// Ensure we redirect back to the category the question is being saved into.
$returnurl->param('category', $fromform->category);
// We are actually saving the question.
if (!empty($question->id)) {
question_require_capability_on($question, 'edit');
} else {
require_capability('moodle/question:add', context::instance_by_id($contextid));
if (!empty($fromform->makecopy) && !$question->formoptions->cansaveasnew) {
print_error('nopermissions', '', '', 'edit');
}
}
$question = $qtypeobj->save_question($question, $fromform);
if (isset($fromform->tags)) {
// If we have any question context level tags then set those tags now.
core_tag_tag::set_item_tags('core_question', 'question', $question->id,
context::instance_by_id($contextid), $fromform->tags, 0);
}
if (isset($fromform->coursetags)) {
// If we have and course context level tags then set those now.
core_tag_tag::set_item_tags('core_question', 'question', $question->id,
context_course::instance($fromform->courseid), $fromform->coursetags, 0);
}
// Purge this question from the cache.
question_bank::notify_question_edited($question->id);
// If we are saving and continuing to edit the question.
if (!empty($fromform->updatebutton)) {
$url->param('id', $question->id);
$url->remove_params('makecopy');
redirect($url);
}
if ($qtypeobj->finished_edit_wizard($fromform)) {
if ($inpopup) {
echo $OUTPUT->notification(get_string('changessaved'), '');
close_window(3);
} else {
$returnurl->param('lastchanged', $question->id);
if ($appendqnumstring) {
$returnurl->param($appendqnumstring, $question->id);
$returnurl->param('sesskey', sesskey());
$returnurl->param('cmid', $cmid);
}
redirect($returnurl);
}
} else {
$nexturlparams = array(
'returnurl' => $originalreturnurl,
'appendqnumstring' => $appendqnumstring,
'scrollpos' => $scrollpos);
if (isset($fromform->nextpageparam) && is_array($fromform->nextpageparam)){
//useful for passing data to the next page which is not saved in the database.
$nexturlparams += $fromform->nextpageparam;
}
$nexturlparams['id'] = $question->id;
$nexturlparams['wizardnow'] = $fromform->wizard;
$nexturl = new moodle_url('/question/question.php', $nexturlparams);
if ($cmid){
$nexturl->param('cmid', $cmid);
} else {
$nexturl->param('courseid', $COURSE->id);
}
redirect($nexturl);
}
}
$streditingquestion = $qtypeobj->get_heading();
$PAGE->set_title($streditingquestion);
$PAGE->set_heading($COURSE->fullname);
$PAGE->navbar->add($streditingquestion);
// Display a heading, question editing form and possibly some extra content needed for
// for this question type.
echo $OUTPUT->header();
$qtypeobj->display_question_editing_page($mform, $question, $wizardnow);
echo $OUTPUT->footer();