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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 random questions.
*
* @package mod_quiz
* @copyright 2018 Shamim Rezaie <shamim@moodle.com>
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
require_once(__DIR__ . '/../../config.php');
require_once($CFG->dirroot . '/mod/quiz/locallib.php');
$slotid = required_param('slotid', PARAM_INT);
$returnurl = optional_param('returnurl', '', PARAM_LOCALURL);
// Get the quiz slot.
$slot = $DB->get_record('quiz_slots', array('id' => $slotid));
if (!$slot || empty($slot->questioncategoryid)) {
print_error('invalidrandomslot', 'mod_quiz');
}
if (!$quiz = $DB->get_record('quiz', array('id' => $slot->quizid))) {
print_error('invalidquizid', 'quiz');
}
$cm = get_coursemodule_from_instance('quiz', $slot->quizid, $quiz->course);
require_login($cm->course, false, $cm);
if ($returnurl) {
$returnurl = new moodle_url($returnurl);
} else {
$returnurl = new moodle_url('/mod/quiz/edit.php', array('cmid' => $cm->id));
}
$url = new moodle_url('/mod/quiz/editrandom.php', array('slotid' => $slotid));
$PAGE->set_url($url);
$PAGE->set_pagelayout('admin');
if (!$question = $DB->get_record('question', array('id' => $slot->questionid))) {
print_error('questiondoesnotexist', 'question', $returnurl);
}
$qtypeobj = question_bank::get_qtype('random');
// Validate the question category.
if (!$category = $DB->get_record('question_categories', array('id' => $question->category))) {
print_error('categorydoesnotexist', 'question', $returnurl);
}
// Check permissions.
question_require_capability_on($question, 'edit');
$thiscontext = context_module::instance($cm->id);
$contexts = new question_edit_contexts($thiscontext);
// Create the question editing form.
$mform = new mod_quiz\form\randomquestion_form(new moodle_url('/mod/quiz/editrandom.php'),
array('contexts' => $contexts));
// Send the question object and a few more parameters to the form.
$toform = fullclone($question);
$toform->category = "{$category->id},{$category->contextid}";
$toform->includesubcategories = $slot->includingsubcategories;
$toform->fromtags = array();
$currentslottags = quiz_retrieve_slot_tags($slot->id);
foreach ($currentslottags as $slottag) {
$toform->fromtags[] = "{$slottag->tagid},{$slottag->tagname}";
}
$toform->returnurl = $returnurl;
if ($cm !== null) {
$toform->cmid = $cm->id;
$toform->courseid = $cm->course;
} else {
$toform->courseid = $COURSE->id;
}
$toform->slotid = $slotid;
$mform->set_data($toform);
if ($mform->is_cancelled()) {
redirect($returnurl);
} else if ($fromform = $mform->get_data()) {
// If we are moving a question, check we have permission to move it from
// whence it came. Where we are moving to is validated by the form.
list($newcatid, $newcontextid) = explode(',', $fromform->category);
if (!empty($question->id) && $newcatid != $question->category) {
$contextid = $newcontextid;
question_require_capability_on($question, 'move');
} else {
$contextid = $category->contextid;
}
$question = $qtypeobj->save_question($question, $fromform);
// We need to save some data into the quiz_slots table.
$slot->questioncategoryid = $fromform->category;
$slot->includingsubcategories = $fromform->includesubcategories;
$DB->update_record('quiz_slots', $slot);
$tags = [];
foreach ($fromform->fromtags as $tagstring) {
list($tagid, $tagname) = explode(',', $tagstring);
$tags[] = (object) [
'id' => $tagid,
'name' => $tagname
];
}
$recordstokeep = [];
$recordstoinsert = [];
$searchableslottags = array_map(function($slottag) {
return ['tagid' => $slottag->tagid, 'tagname' => $slottag->tagname];
}, $currentslottags);
foreach ($tags as $tag) {
if ($key = array_search(['tagid' => $tag->id, 'tagname' => $tag->name], $searchableslottags)) {
// If found, $key would be the id field in the quiz_slot_tags table.
// Therefore, there was no need to check !== false here.
$recordstokeep[] = $key;
} else {
$recordstoinsert[] = (object)[
'slotid' => $slot->id,
'tagid' => $tag->id,
'tagname' => $tag->name
];
}
}
// Now, delete the remaining records.
if (!empty($recordstokeep)) {
list($select, $params) = $DB->get_in_or_equal($recordstokeep, SQL_PARAMS_QM, 'param', false);
array_unshift($params, $slot->id);
$DB->delete_records_select('quiz_slot_tags', "slotid = ? AND id $select", $params);
} else {
$DB->delete_records('quiz_slot_tags', array('slotid' => $slot->id));
}
// And now, insert the extra records if there is any.
if (!empty($recordstoinsert)) {
$DB->insert_records('quiz_slot_tags', $recordstoinsert);
}
// Purge this question from the cache.
question_bank::notify_question_edited($question->id);
$returnurl->param('lastchanged', $question->id);
redirect($returnurl);
}
$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();
$heading = get_string('randomediting', 'mod_quiz');
echo $OUTPUT->heading_with_help($heading, 'randomquestion', 'mod_quiz');
$mform->display();
echo $OUTPUT->footer();