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https://github.com/moodle/moodle.git
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1280 lines
46 KiB
PHP
1280 lines
46 KiB
PHP
<?php
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// This file is part of Moodle - http://moodle.org/
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//
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// Moodle is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// Moodle is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
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/**
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* Back-end code for handling data about quizzes and the current user's attempt.
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*
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* There are classes for loading all the information about a quiz and attempts,
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* and for displaying the navigation panel.
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*
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* @package mod
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* @subpackage quiz
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* @copyright 2008 onwards Tim Hunt
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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*/
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if (!defined('MOODLE_INTERNAL')) {
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die('Direct access to this script is forbidden.'); /// It must be included from a Moodle page.
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}
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/**
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* Class for quiz exceptions. Just saves a couple of arguments on the
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* constructor for a moodle_exception.
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*
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* @copyright 2008 Tim Hunt
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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* @since Moodle 2.0
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*/
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class moodle_quiz_exception extends moodle_exception {
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function __construct($quizobj, $errorcode, $a = NULL, $link = '', $debuginfo = null) {
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if (!$link) {
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$link = $quizobj->view_url();
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}
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parent::__construct($errorcode, 'quiz', $link, $a, $debuginfo);
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}
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}
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/**
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* A class encapsulating a quiz and the questions it contains, and making the
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* information available to scripts like view.php.
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*
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* Initially, it only loads a minimal amout of information about each question - loading
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* extra information only when necessary or when asked. The class tracks which questions
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* are loaded.
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*
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* @copyright 2008 Tim Hunt
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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* @since Moodle 2.0
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*/
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class quiz {
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// Fields initialised in the constructor.
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protected $course;
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protected $cm;
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protected $quiz;
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protected $context;
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protected $questionids;
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// Fields set later if that data is needed.
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protected $questions = null;
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protected $accessmanager = null;
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protected $ispreviewuser = null;
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// Constructor =========================================================================
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/**
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* Constructor, assuming we already have the necessary data loaded.
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*
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* @param object $quiz the row from the quiz table.
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* @param object $cm the course_module object for this quiz.
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* @param object $course the row from the course table for the course we belong to.
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* @param boolean $getcontext intended for testing - stops the constructor getting the context.
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*/
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function __construct($quiz, $cm, $course, $getcontext = true) {
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$this->quiz = $quiz;
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$this->cm = $cm;
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$this->quiz->cmid = $this->cm->id;
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$this->course = $course;
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if ($getcontext && !empty($cm->id)) {
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$this->context = get_context_instance(CONTEXT_MODULE, $cm->id);
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}
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$this->questionids = explode(',', quiz_questions_in_quiz($this->quiz->questions));
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}
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/**
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* Static function to create a new quiz object for a specific user.
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*
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* @param integer $quizid the the quiz id.
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* @param integer $userid the the userid.
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* @return quiz the new quiz object
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*/
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static public function create($quizid, $userid) {
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global $DB;
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if (!$quiz = $DB->get_record('quiz', array('id' => $quizid))) {
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throw new moodle_exception('invalidquizid', 'quiz');
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}
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if (!$course = $DB->get_record('course', array('id' => $quiz->course))) {
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throw new moodle_exception('invalidcoursemodule');
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}
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if (!$cm = get_coursemodule_from_instance('quiz', $quiz->id, $course->id)) {
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throw new moodle_exception('invalidcoursemodule');
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}
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// Update quiz with override information
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$quiz = quiz_update_effective_access($quiz, $userid);
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return new quiz($quiz, $cm, $course);
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}
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// Functions for loading more data =====================================================
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/**
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* Load just basic information about all the questions in this quiz.
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*/
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public function preload_questions() {
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if (empty($this->questionids)) {
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throw new moodle_quiz_exception($this, 'noquestions', $this->edit_url());
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}
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$this->questions = question_preload_questions($this->questionids,
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'qqi.grade AS maxmark, qqi.id AS instance',
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'{quiz_question_instances} qqi ON qqi.quiz = :quizid AND q.id = qqi.question',
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array('quizid' => $this->quiz->id));
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}
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/**
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* Fully load some or all of the questions for this quiz. You must call {@link preload_questions()} first.
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*
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* @param array $questionids question ids of the questions to load. null for all.
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*/
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public function load_questions($questionids = null) {
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if (is_null($questionids)) {
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$questionids = $this->questionids;
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}
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$questionstoprocess = array();
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foreach ($questionids as $id) {
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if (array_key_exists($id, $this->questions)) {
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$questionstoprocess[$id] = $this->questions[$id];
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}
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}
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if (!get_question_options($questionstoprocess)) {
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throw new moodle_quiz_exception($this, 'loadingquestionsfailed', implode(', ', $questionids));
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}
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}
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// Simple getters ======================================================================
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/** @return integer the course id. */
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public function get_courseid() {
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return $this->course->id;
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}
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/** @return object the row of the course table. */
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public function get_course() {
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return $this->course;
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}
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/** @return integer the quiz id. */
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public function get_quizid() {
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return $this->quiz->id;
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}
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/** @return object the row of the quiz table. */
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public function get_quiz() {
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return $this->quiz;
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}
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/** @return string the name of this quiz. */
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public function get_quiz_name() {
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return $this->quiz->name;
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}
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/** @return integer the number of attempts allowed at this quiz (0 = infinite). */
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public function get_num_attempts_allowed() {
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return $this->quiz->attempts;
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}
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/** @return integer the course_module id. */
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public function get_cmid() {
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return $this->cm->id;
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}
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/** @return object the course_module object. */
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public function get_cm() {
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return $this->cm;
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}
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/** @return object the module context for this quiz. */
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public function get_context() {
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return $this->context;
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}
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/**
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* @return boolean wether the current user is someone who previews the quiz,
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* rather than attempting it.
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*/
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public function is_preview_user() {
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if (is_null($this->ispreviewuser)) {
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$this->ispreviewuser = has_capability('mod/quiz:preview', $this->context);
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}
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return $this->ispreviewuser;
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}
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/**
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* @return whether any questions have been added to this quiz.
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*/
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public function has_questions() {
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return !empty($this->questionids);
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}
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/**
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* @param integer $id the question id.
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* @return object the question object with that id.
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*/
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public function get_question($id) {
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return $this->questions[$id];
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}
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/**
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* @param array $questionids question ids of the questions to load. null for all.
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*/
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public function get_questions($questionids = null) {
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if (is_null($questionids)) {
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$questionids = $this->questionids;
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}
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$questions = array();
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foreach ($questionids as $id) {
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if (!array_key_exists($id, $this->questions)) {
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throw new moodle_exception('cannotstartmissingquestion', 'quiz', $this->view_url());
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}
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$questions[$id] = $this->questions[$id];
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$this->ensure_question_loaded($id);
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}
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return $questions;
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}
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/**
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* @param integer $timenow the current time as a unix timestamp.
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* @return quiz_access_manager and instance of the quiz_access_manager class for this quiz at this time.
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*/
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public function get_access_manager($timenow) {
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if (is_null($this->accessmanager)) {
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$this->accessmanager = new quiz_access_manager($this, $timenow,
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has_capability('mod/quiz:ignoretimelimits', $this->context, NULL, false));
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}
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return $this->accessmanager;
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}
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/**
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* Wrapper round the has_capability funciton that automatically passes in the quiz context.
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*/
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public function has_capability($capability, $userid = NULL, $doanything = true) {
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return has_capability($capability, $this->context, $userid, $doanything);
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}
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/**
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* Wrapper round the require_capability funciton that automatically passes in the quiz context.
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*/
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public function require_capability($capability, $userid = NULL, $doanything = true) {
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return require_capability($capability, $this->context, $userid, $doanything);
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}
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// URLs related to this attempt ========================================================
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/**
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* @return string the URL of this quiz's view page.
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*/
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public function view_url() {
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global $CFG;
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return $CFG->wwwroot . '/mod/quiz/view.php?id=' . $this->cm->id;
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}
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/**
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* @return string the URL of this quiz's edit page.
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*/
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public function edit_url() {
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global $CFG;
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return $CFG->wwwroot . '/mod/quiz/edit.php?cmid=' . $this->cm->id;
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}
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/**
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* @param integer $attemptid the id of an attempt.
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* @return string the URL of that attempt.
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*/
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public function attempt_url($attemptid) {
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global $CFG;
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return $CFG->wwwroot . '/mod/quiz/attempt.php?attempt=' . $attemptid;
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}
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/**
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* @return string the URL of this quiz's edit page. Needs to be POSTed to with a cmid parameter.
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*/
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public function start_attempt_url() {
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return new moodle_url('/mod/quiz/startattempt.php',
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array('cmid' => $this->cm->id, 'sesskey' => sesskey()));
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}
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/**
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* @param integer $attemptid the id of an attempt.
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* @return string the URL of the review of that attempt.
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*/
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public function review_url($attemptid) {
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return new moodle_url('/mod/quiz/review.php', array('attempt' => $attemptid));
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}
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// Bits of content =====================================================================
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/**
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* @param string $title the name of this particular quiz page.
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* @return array the data that needs to be sent to print_header_simple as the $navigation
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* parameter.
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*/
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public function navigation($title) {
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global $PAGE;
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$PAGE->navbar->add($title);
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return '';
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}
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// Private methods =====================================================================
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/**
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* Check that the definition of a particular question is loaded, and if not throw an exception.
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* @param $id a questionid.
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*/
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protected function ensure_question_loaded($id) {
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if (isset($this->questions[$id]->_partiallyloaded)) {
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throw new moodle_quiz_exception($this, 'questionnotloaded', $id);
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}
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}
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}
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/**
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* This class extends the quiz class to hold data about the state of a particular attempt,
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* in addition to the data about the quiz.
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*
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* @copyright 2008 Tim Hunt
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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* @since Moodle 2.0
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*/
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class quiz_attempt {
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// Fields initialised in the constructor.
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protected $quizobj;
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protected $attempt;
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protected $quba;
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// Fields set later if that data is needed.
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protected $pagelayout; // array page no => array of numbers on the page in order.
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protected $reviewoptions = null;
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// Constructor =========================================================================
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/**
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* Constructor assuming we already have the necessary data loaded.
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*
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* @param object $attempt the row of the quiz_attempts table.
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* @param object $quiz the quiz object for this attempt and user.
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* @param object $cm the course_module object for this quiz.
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* @param object $course the row from the course table for the course we belong to.
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*/
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function __construct($attempt, $quiz, $cm, $course) {
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$this->attempt = $attempt;
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$this->quizobj = new quiz($quiz, $cm, $course);
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$this->quba = question_engine::load_questions_usage_by_activity($this->attempt->uniqueid);
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$this->determine_layout();
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$this->number_questions();
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}
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/**
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* Used by {create()} and {create_from_usage_id()}.
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* @param array $conditions passed to $DB->get_record('quiz_attempts', $conditions).
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*/
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static protected function create_helper($conditions) {
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global $DB;
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// TODO deal with the issue that makes this necessary.
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// if (!$DB->record_exists('question_sessions', array('attemptid' => $attempt->uniqueid))) {
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// // this attempt has not yet been upgraded to the new model
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// quiz_upgrade_states($attempt);
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// }
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if (!$attempt = $DB->get_record('quiz_attempts', $conditions)) {
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throw new moodle_exception('invalidattemptid', 'quiz');
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}
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if (!$quiz = $DB->get_record('quiz', array('id' => $attempt->quiz))) {
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throw new moodle_exception('invalidquizid', 'quiz');
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}
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if (!$course = $DB->get_record('course', array('id' => $quiz->course))) {
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throw new moodle_exception('invalidcoursemodule');
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}
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if (!$cm = get_coursemodule_from_instance('quiz', $quiz->id, $course->id)) {
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throw new moodle_exception('invalidcoursemodule');
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}
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// Update quiz with override information
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$quiz = quiz_update_effective_access($quiz, $attempt->userid);
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return new quiz_attempt($attempt, $quiz, $cm, $course);
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}
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/**
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* Static function to create a new quiz_attempt object given an attemptid.
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*
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* @param integer $attemptid the attempt id.
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* @return quiz_attempt the new quiz_attempt object
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*/
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static public function create($attemptid) {
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return self::create_helper(array('id' => $attemptid));
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}
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/**
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* Static function to create a new quiz_attempt object given a usage id.
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*
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* @param integer $usageid the attempt usage id.
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* @return quiz_attempt the new quiz_attempt object
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*/
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static public function create_from_usage_id($usageid) {
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return self::create_helper(array('uniqueid' => $usageid));
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}
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private function determine_layout() {
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$this->pagelayout = array();
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// Break up the layout string into pages.
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$pagelayouts = explode(',0', quiz_clean_layout($this->attempt->layout, true));
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// Strip off any empty last page (normally there is one).
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if (end($pagelayouts) == '') {
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array_pop($pagelayouts);
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}
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// File the ids into the arrays.
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$this->pagelayout = array();
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foreach ($pagelayouts as $page => $pagelayout) {
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$pagelayout = trim($pagelayout, ',');
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if ($pagelayout == '') {
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continue;
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}
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$this->pagelayout[$page] = explode(',', $pagelayout);
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}
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}
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// Number the questions.
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private function number_questions() {
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$number = 1;
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foreach ($this->pagelayout as $page => $slots) {
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foreach ($slots as $slot) {
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$question = $this->quba->get_question($slot);
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if ($question->length > 0) {
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$question->_number = $number;
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$number += $question->length;
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} else {
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$question->_number = get_string('infoshort', 'quiz');
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}
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$question->_page = $page;
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}
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}
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}
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// Simple getters ======================================================================
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public function get_quiz() {
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return $this->quizobj->get_quiz();
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}
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public function get_quizobj() {
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return $this->quizobj;
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}
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/** @return integer the course id. */
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public function get_courseid() {
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return $this->quizobj->get_courseid();
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}
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/** @return integer the course id. */
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public function get_course() {
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return $this->quizobj->get_course();
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}
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/** @return integer the quiz id. */
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public function get_quizid() {
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return $this->quizobj->get_quizid();
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}
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/** @return string the name of this quiz. */
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public function get_quiz_name() {
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return $this->quizobj->get_quiz_name();
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}
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/** @return object the course_module object. */
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public function get_cm() {
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return $this->quizobj->get_cm();
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}
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/** @return object the course_module object. */
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public function get_cmid() {
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return $this->quizobj->get_cmid();
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}
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/**
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* @return boolean wether the current user is someone who previews the quiz,
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* rather than attempting it.
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*/
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public function is_preview_user() {
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return $this->quizobj->is_preview_user();
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}
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/** @return integer the number of attempts allowed at this quiz (0 = infinite). */
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public function get_num_attempts_allowed() {
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return $this->quizobj->get_num_attempts_allowed();
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}
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/** @return integer number fo pages in this quiz. */
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public function get_num_pages() {
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return count($this->pagelayout);
|
|
}
|
|
|
|
/**
|
|
* @param integer $timenow the current time as a unix timestamp.
|
|
* @return quiz_access_manager and instance of the quiz_access_manager class for this quiz at this time.
|
|
*/
|
|
public function get_access_manager($timenow) {
|
|
return $this->quizobj->get_access_manager($timenow);
|
|
}
|
|
|
|
/** @return integer the attempt id. */
|
|
public function get_attemptid() {
|
|
return $this->attempt->id;
|
|
}
|
|
|
|
/** @return integer the attempt unique id. */
|
|
public function get_uniqueid() {
|
|
return $this->attempt->uniqueid;
|
|
}
|
|
|
|
/** @return object the row from the quiz_attempts table. */
|
|
public function get_attempt() {
|
|
return $this->attempt;
|
|
}
|
|
|
|
/** @return integer the number of this attemp (is it this user's first, second, ... attempt). */
|
|
public function get_attempt_number() {
|
|
return $this->attempt->attempt;
|
|
}
|
|
|
|
/** @return integer the id of the user this attempt belongs to. */
|
|
public function get_userid() {
|
|
return $this->attempt->userid;
|
|
}
|
|
|
|
/** @return boolean whether this attempt has been finished (true) or is still in progress (false). */
|
|
public function is_finished() {
|
|
return $this->attempt->timefinish != 0;
|
|
}
|
|
|
|
/** @return boolean whether this attempt is a preview attempt. */
|
|
public function is_preview() {
|
|
return $this->attempt->preview;
|
|
}
|
|
|
|
/**
|
|
* Is this a student dealing with their own attempt/teacher previewing,
|
|
* or someone with 'mod/quiz:viewreports' reviewing someone elses attempt.
|
|
*
|
|
* @return boolean whether this situation should be treated as someone looking at their own
|
|
* attempt. The distinction normally only matters when an attempt is being reviewed.
|
|
*/
|
|
public function is_own_attempt() {
|
|
global $USER;
|
|
return $this->attempt->userid == $USER->id &&
|
|
(!$this->is_preview_user() || $this->attempt->preview);
|
|
}
|
|
|
|
/**
|
|
* Get the overall feedback corresponding to a particular mark.
|
|
* @param $grade a particular grade.
|
|
*/
|
|
public function get_overall_feedback($grade) {
|
|
return quiz_feedback_for_grade($grade, $this->get_quiz(),
|
|
$this->quizobj->get_context());
|
|
}
|
|
|
|
/**
|
|
* Wrapper round the has_capability funciton that automatically passes in the quiz context.
|
|
*/
|
|
public function has_capability($capability, $userid = NULL, $doanything = true) {
|
|
return $this->quizobj->has_capability($capability, $userid, $doanything);
|
|
}
|
|
|
|
/**
|
|
* Wrapper round the require_capability funciton that automatically passes in the quiz context.
|
|
*/
|
|
public function require_capability($capability, $userid = NULL, $doanything = true) {
|
|
return $this->quizobj->require_capability($capability, $userid, $doanything);
|
|
}
|
|
|
|
/**
|
|
* Check the appropriate capability to see whether this user may review their own attempt.
|
|
* If not, prints an error.
|
|
*/
|
|
public function check_review_capability() {
|
|
if (!$this->has_capability('mod/quiz:viewreports')) {
|
|
if ($this->get_attempt_state() == mod_quiz_display_options::IMMEDIATELY_AFTER) {
|
|
$this->require_capability('mod/quiz:attempt');
|
|
} else {
|
|
$this->require_capability('mod/quiz:reviewmyattempts');
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @return integer one of the mod_quiz_display_options::DURING,
|
|
* IMMEDIATELY_AFTER, LATER_WHILE_OPEN or AFTER_CLOSE constants.
|
|
*/
|
|
public function get_attempt_state() {
|
|
return quiz_attempt_state($this->get_quiz(), $this->attempt);
|
|
}
|
|
|
|
/**
|
|
* Wrapper that the correct mod_quiz_display_options for this quiz at the
|
|
* moment.
|
|
*
|
|
* @return question_display_options the render options for this user on this attempt.
|
|
*/
|
|
public function get_display_options($reviewing) {
|
|
if ($reviewing) {
|
|
if (is_null($this->reviewoptions)) {
|
|
$this->reviewoptions = quiz_get_review_options($this->get_quiz(),
|
|
$this->attempt, $this->quizobj->get_context());
|
|
}
|
|
return $this->reviewoptions;
|
|
|
|
} else {
|
|
$options = mod_quiz_display_options::make_from_quiz($this->get_quiz(),
|
|
mod_quiz_display_options::DURING);
|
|
$options->flags = quiz_get_flag_option($this->attempt, $this->quizobj->get_context());
|
|
return $options;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @param int $page page number
|
|
* @return boolean true if this is the last page of the quiz.
|
|
*/
|
|
public function is_last_page($page) {
|
|
return $page == count($this->pagelayout) - 1;
|
|
}
|
|
|
|
/**
|
|
* Return the list of question ids for either a given page of the quiz, or for the
|
|
* whole quiz.
|
|
*
|
|
* @param mixed $page string 'all' or integer page number.
|
|
* @return array the reqested list of question ids.
|
|
*/
|
|
public function get_slots($page = 'all') {
|
|
if ($page === 'all') {
|
|
$numbers = array();
|
|
foreach ($this->pagelayout as $numbersonpage) {
|
|
$numbers = array_merge($numbers, $numbersonpage);
|
|
}
|
|
return $numbers;
|
|
} else {
|
|
return $this->pagelayout[$page];
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Get the question_attempt object for a particular question in this attempt.
|
|
* @param integer $slot the number used to identify this question within this attempt.
|
|
* @return question_attempt
|
|
*/
|
|
public function get_question_attempt($slot) {
|
|
return $this->quba->get_question_attempt($slot);
|
|
}
|
|
|
|
/**
|
|
* Is a particular question in this attempt a real question, or something like a description.
|
|
* @param integer $slot the number used to identify this question within this attempt.
|
|
* @return boolean whether that question is a real question.
|
|
*/
|
|
public function is_real_question($slot) {
|
|
return $this->quba->get_question($slot)->length != 0;
|
|
}
|
|
|
|
/**
|
|
* Is a particular question in this attempt a real question, or something like a description.
|
|
* @param integer $slot the number used to identify this question within this attempt.
|
|
* @return boolean whether that question is a real question.
|
|
*/
|
|
public function is_question_flagged($slot) {
|
|
return $this->quba->get_question_attempt($slot)->is_flagged();
|
|
}
|
|
|
|
/**
|
|
* Return the grade obtained on a particular question, if the user is permitted to see it.
|
|
* You must previously have called load_question_states to load the state data about this question.
|
|
*
|
|
* @param integer $slot the number used to identify this question within this attempt.
|
|
* @return string the formatted grade, to the number of decimal places specified by the quiz.
|
|
*/
|
|
public function get_question_number($slot) {
|
|
return $this->quba->get_question($slot)->_number;
|
|
}
|
|
|
|
/**
|
|
* Return the grade obtained on a particular question, if the user is permitted to see it.
|
|
* You must previously have called load_question_states to load the state data about this question.
|
|
*
|
|
* @param integer $slot the number used to identify this question within this attempt.
|
|
* @return string the formatted grade, to the number of decimal places specified by the quiz.
|
|
*/
|
|
public function get_question_name($slot) {
|
|
return $this->quba->get_question($slot)->name;
|
|
}
|
|
|
|
/**
|
|
* Return the grade obtained on a particular question, if the user is permitted to see it.
|
|
* You must previously have called load_question_states to load the state data about this question.
|
|
*
|
|
* @param integer $slot the number used to identify this question within this attempt.
|
|
* @param boolean $showcorrectness Whether right/partial/wrong states should
|
|
* be distinguised.
|
|
* @return string the formatted grade, to the number of decimal places specified by the quiz.
|
|
*/
|
|
public function get_question_status($slot, $showcorrectness) {
|
|
return $this->quba->get_question_state_string($slot, $showcorrectness);
|
|
}
|
|
|
|
/**
|
|
* Return the grade obtained on a particular question.
|
|
* You must previously have called load_question_states to load the state
|
|
* data about this question.
|
|
*
|
|
* @param integer $slot the number used to identify this question within this attempt.
|
|
* @return string the formatted grade, to the number of decimal places specified by the quiz.
|
|
*/
|
|
public function get_question_mark($slot) {
|
|
return quiz_format_question_grade($this->get_quiz(), $this->quba->get_question_mark($slot));
|
|
}
|
|
|
|
/**
|
|
* Get the time of the most recent action performed on a question.
|
|
* @param integer $slot the number used to identify this question within this usage.
|
|
* @return integer timestamp.
|
|
*/
|
|
public function get_question_action_time($slot) {
|
|
return $this->quba->get_question_action_time($slot);
|
|
}
|
|
|
|
// URLs related to this attempt ========================================================
|
|
/**
|
|
* @return string quiz view url.
|
|
*/
|
|
public function view_url() {
|
|
return $this->quizobj->view_url();
|
|
}
|
|
|
|
/**
|
|
* @return string the URL of this quiz's edit page. Needs to be POSTed to with a cmid parameter.
|
|
*/
|
|
public function start_attempt_url() {
|
|
return $this->quizobj->start_attempt_url();
|
|
}
|
|
|
|
/**
|
|
* @param integer $slot if speified, the slot number of a specific question to link to.
|
|
* @param integer $page if specified, a particular page to link to. If not givem deduced
|
|
* from $slot, or goes to the first page.
|
|
* @param integer $questionid a question id. If set, will add a fragment to the URL
|
|
* to jump to a particuar question on the page.
|
|
* @param integer $thispage if not -1, the current page. Will cause links to other things on
|
|
* this page to be output as only a fragment.
|
|
* @return string the URL to continue this attempt.
|
|
*/
|
|
public function attempt_url($slot = null, $page = -1, $thispage = -1) {
|
|
return $this->page_and_question_url('attempt', $slot, $page, false, $thispage);
|
|
}
|
|
|
|
/**
|
|
* @return string the URL of this quiz's summary page.
|
|
*/
|
|
public function summary_url() {
|
|
return new moodle_url('/mod/quiz/summary.php', array('attempt' => $this->attempt->id));
|
|
}
|
|
|
|
/**
|
|
* @return string the URL of this quiz's summary page.
|
|
*/
|
|
public function processattempt_url() {
|
|
return new moodle_url('/mod/quiz/processattempt.php');
|
|
}
|
|
|
|
/**
|
|
* @param integer $slot indicates which question to link to.
|
|
* @param integer $page if specified, the URL of this particular page of the attempt, otherwise
|
|
* the URL will go to the first page. If -1, deduce $page from $slot.
|
|
* @param boolean $showall if true, the URL will be to review the entire attempt on one page,
|
|
* and $page will be ignored.
|
|
* @param integer $thispage if not -1, the current page. Will cause links to other things on
|
|
* this page to be output as only a fragment.
|
|
* @return string the URL to review this attempt.
|
|
*/
|
|
public function review_url($slot = null, $page = -1, $showall = false, $thispage = -1) {
|
|
return $this->page_and_question_url('review', $slot, $page, $showall, $thispage);
|
|
}
|
|
|
|
// Bits of content =====================================================================
|
|
|
|
/**
|
|
* Initialise the JS etc. required all the questions on a page..
|
|
* @param mixed $page a page number, or 'all'.
|
|
*/
|
|
public function get_html_head_contributions($page = 'all', $showall = false) {
|
|
if ($showall) {
|
|
$page = 'all';
|
|
}
|
|
$result = '';
|
|
foreach ($this->get_slots($page) as $slot) {
|
|
$result .= $this->quba->render_question_head_html($slot);
|
|
}
|
|
$result .= question_engine::initialise_js();
|
|
return $result;
|
|
}
|
|
|
|
/**
|
|
* Initialise the JS etc. required by one question.
|
|
* @param integer $questionid the question id.
|
|
*/
|
|
public function get_question_html_head_contributions($slot) {
|
|
return $this->quba->render_question_head_html($slot) .
|
|
question_engine::initialise_js();
|
|
}
|
|
|
|
/**
|
|
* Print the HTML for the start new preview button.
|
|
*/
|
|
public function print_restart_preview_button() {
|
|
global $CFG, $OUTPUT;
|
|
echo $OUTPUT->container_start('controls');
|
|
$url = new moodle_url($this->start_attempt_url(), array('forcenew' => true));
|
|
echo $OUTPUT->single_button($url, get_string('startagain', 'quiz'));
|
|
echo $OUTPUT->container_end();
|
|
}
|
|
|
|
/**
|
|
* Return the HTML of the quiz timer.
|
|
* @return string HTML content.
|
|
*/
|
|
public function get_timer_html() {
|
|
return '<div id="quiz-timer">' . get_string('timeleft', 'quiz') .
|
|
' <span id="quiz-time-left"></span></div>';
|
|
}
|
|
|
|
/**
|
|
* Generate the HTML that displayes the question in its current state, with
|
|
* the appropriate display options.
|
|
*
|
|
* @param integer $id the id of a question in this quiz attempt.
|
|
* @param boolean $reviewing is the being printed on an attempt or a review page.
|
|
* @param string $thispageurl the URL of the page this question is being printed on.
|
|
* @return string HTML for the question in its current state.
|
|
*/
|
|
public function render_question($slot, $reviewing, $thispageurl = '') {
|
|
return $this->quba->render_question($slot,
|
|
$this->get_display_options($reviewing),
|
|
$this->quba->get_question($slot)->_number);
|
|
}
|
|
|
|
/**
|
|
* Like {@link render_question()} but displays the question at the past step
|
|
* indicated by $seq, rather than showing the latest step.
|
|
*
|
|
* @param integer $id the id of a question in this quiz attempt.
|
|
* @param integer $seq the seq number of the past state to display.
|
|
* @param boolean $reviewing is the being printed on an attempt or a review page.
|
|
* @param string $thispageurl the URL of the page this question is being printed on.
|
|
* @return string HTML for the question in its current state.
|
|
*/
|
|
public function render_question_at_step($slot, $seq, $reviewing, $thispageurl = '') {
|
|
return $this->quba->render_question_at_step($slot, $seq,
|
|
$this->get_display_options($reviewing),
|
|
$this->quba->get_question($slot)->_number);
|
|
}
|
|
|
|
/**
|
|
* Wrapper round print_question from lib/questionlib.php.
|
|
*
|
|
* @param integer $id the id of a question in this quiz attempt.
|
|
* @param boolean $reviewing is the being printed on an attempt or a review page.
|
|
* @param string $thispageurl the URL of the page this question is being printed on.
|
|
*/
|
|
public function render_question_for_commenting($slot) {
|
|
$options = $this->get_display_options(true);
|
|
$options->hide_all_feedback();
|
|
$options->manualcomment = question_display_options::EDITABLE;
|
|
return $this->quba->render_question($slot, $options, $this->quba->get_question($slot)->_number);
|
|
}
|
|
|
|
/**
|
|
* Check wheter access should be allowed to a particular file.
|
|
*
|
|
* @param integer $id the id of a question in this quiz attempt.
|
|
* @param boolean $reviewing is the being printed on an attempt or a review page.
|
|
* @param string $thispageurl the URL of the page this question is being printed on.
|
|
* @return string HTML for the question in its current state.
|
|
*/
|
|
public function check_file_access($slot, $reviewing, $contextid, $component,
|
|
$filearea, $args, $forcedownload) {
|
|
return $this->quba->check_file_access($slot, $this->get_display_options($reviewing),
|
|
$component, $filearea, $args, $forcedownload);
|
|
}
|
|
|
|
/**
|
|
* Triggers the sending of the notification emails at the end of this attempt.
|
|
*/
|
|
public function quiz_send_notification_emails() {
|
|
quiz_send_notification_emails($this->get_course(), $this->get_quiz(), $this->attempt,
|
|
$this->quizobj->get_context(), $this->get_cm());
|
|
}
|
|
|
|
/**
|
|
* Get the navigation panel object for this attempt.
|
|
*
|
|
* @param $panelclass The type of panel, quiz_attempt_nav_panel or quiz_review_nav_panel
|
|
* @param $page the current page number.
|
|
* @param $showall whether we are showing the whole quiz on one page. (Used by review.php)
|
|
* @return quiz_nav_panel_base the requested object.
|
|
*/
|
|
public function get_navigation_panel($panelclass, $page, $showall = false) {
|
|
$panel = new $panelclass($this, $this->get_display_options(true), $page, $showall);
|
|
return $panel->get_contents();
|
|
}
|
|
|
|
/**
|
|
* Given a URL containing attempt={this attempt id}, return an array of variant URLs
|
|
* @param $url a URL.
|
|
* @return string HTML fragment. Comma-separated list of links to the other
|
|
* attempts with the attempt number as the link text. The curent attempt is
|
|
* included but is not a link.
|
|
*/
|
|
public function links_to_other_attempts($url) {
|
|
$search = '/\battempt=' . $this->attempt->id . '\b/';
|
|
$attempts = quiz_get_user_attempts($this->get_quiz()->id, $this->attempt->userid, 'all');
|
|
if (count($attempts) <= 1) {
|
|
return false;
|
|
}
|
|
$attemptlist = array();
|
|
foreach ($attempts as $at) {
|
|
if ($at->id == $this->attempt->id) {
|
|
$attemptlist[] = '<strong>' . $at->attempt . '</strong>';
|
|
} else {
|
|
$changedurl = preg_replace($search, 'attempt=' . $at->id, $url);
|
|
$attemptlist[] = '<a href="' . s($changedurl) . '">' . $at->attempt . '</a>';
|
|
}
|
|
}
|
|
return implode(', ', $attemptlist);
|
|
}
|
|
|
|
// Methods for processing ==================================================
|
|
|
|
/**
|
|
* Process all the actions that were submitted as part of the current request.
|
|
*
|
|
* @param integer $timestamp the timestamp that should be stored as the modifed
|
|
* time in the database for these actions. If null, will use the current time.
|
|
*/
|
|
public function process_all_actions($timestamp) {
|
|
global $DB;
|
|
$this->quba->process_all_actions($timestamp);
|
|
question_engine::save_questions_usage_by_activity($this->quba);
|
|
|
|
$this->attempt->timemodified = $timestamp;
|
|
if ($this->attempt->timefinish) {
|
|
$this->attempt->sumgrades = $this->quba->get_total_mark();
|
|
}
|
|
if (!$DB->update_record('quiz_attempts', $this->attempt)) {
|
|
throw new moodle_quiz_exception($this->get_quizobj(), 'saveattemptfailed');
|
|
}
|
|
if (!$this->is_preview() && $this->attempt->timefinish) {
|
|
quiz_save_best_grade($this->get_quiz(), $this->get_userid());
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Update the flagged state for all question_attempts in this usage, if their
|
|
* flagged state was changed in the request.
|
|
*/
|
|
public function save_question_flags() {
|
|
$this->quba->update_question_flags();
|
|
question_engine::save_questions_usage_by_activity($this->quba);
|
|
}
|
|
|
|
public function finish_attempt($timestamp) {
|
|
global $DB;
|
|
$this->quba->process_all_actions($timestamp);
|
|
$this->quba->finish_all_questions($timestamp);
|
|
|
|
question_engine::save_questions_usage_by_activity($this->quba);
|
|
|
|
$this->attempt->timemodified = $timestamp;
|
|
$this->attempt->timefinish = $timestamp;
|
|
$this->attempt->sumgrades = $this->quba->get_total_mark();
|
|
if (!$DB->update_record('quiz_attempts', $this->attempt)) {
|
|
throw new moodle_quiz_exception($this->get_quizobj(), 'saveattemptfailed');
|
|
}
|
|
|
|
if (!$this->is_preview()) {
|
|
quiz_save_best_grade($this->get_quiz());
|
|
$this->quiz_send_notification_emails();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Print the fields of the comment form for questions in this attempt.
|
|
* @param $slot which question to output the fields for.
|
|
* @param $prefix Prefix to add to all field names.
|
|
*/
|
|
public function question_print_comment_fields($slot, $prefix) {
|
|
// Work out a nice title.
|
|
$student = get_record('user', 'id', $this->get_userid());
|
|
$a = new object();
|
|
$a->fullname = fullname($student, true);
|
|
$a->attempt = $this->get_attempt_number();
|
|
|
|
question_print_comment_fields($this->quba->get_question_attempt($slot),
|
|
$prefix, $this->get_display_options(true)->markdp,
|
|
get_string('gradingattempt', 'quiz_grading', $a));
|
|
}
|
|
|
|
// Private methods =====================================================================
|
|
|
|
/**
|
|
* Get a URL for a particular question on a particular page of the quiz.
|
|
* Used by {@link attempt_url()} and {@link review_url()}.
|
|
*
|
|
* @param string $script. Used in the URL like /mod/quiz/$script.php
|
|
* @param integer $slot identifies the specific question on the page to jump to. 0 to just use the $page parameter.
|
|
* @param integer $page -1 to look up the page number from the slot, otherwise the page number to go to.
|
|
* @param boolean $showall if true, return a URL with showall=1, and not page number
|
|
* @param integer $thispage the page we are currently on. Links to questions on this
|
|
* page will just be a fragment #q123. -1 to disable this.
|
|
* @return The requested URL.
|
|
*/
|
|
protected function page_and_question_url($script, $slot, $page, $showall, $thispage) {
|
|
// Fix up $page
|
|
if ($page == -1) {
|
|
if (!is_null($slot) && !$showall) {
|
|
$page = $this->quba->get_question($slot)->_page;
|
|
} else {
|
|
$page = 0;
|
|
}
|
|
}
|
|
|
|
if ($showall) {
|
|
$page = 0;
|
|
}
|
|
|
|
// Add a fragment to scroll down to the question.
|
|
$fragment = '';
|
|
if (!is_null($slot)) {
|
|
if ($slot == reset($this->pagelayout[$page])) {
|
|
// First question on page, go to top.
|
|
$fragment = '#';
|
|
} else {
|
|
$fragment = '#q' . $slot;
|
|
}
|
|
}
|
|
|
|
// Work out the correct start to the URL.
|
|
if ($thispage == $page) {
|
|
return new moodle_url($fragment);
|
|
|
|
} else {
|
|
$url = new moodle_url('/mod/quiz/' . $script . '.php' . $fragment,
|
|
array('attempt' => $this->attempt->id));
|
|
if ($showall) {
|
|
$url->param('showall', 1);
|
|
} else if ($page > 0) {
|
|
$url->param('page', $page);
|
|
}
|
|
return $url;
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Represents the navigation panel, and builds a {@link block_contents} to allow
|
|
* it to be output.
|
|
*
|
|
* @copyright 2008 Tim Hunt
|
|
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
|
|
* @since Moodle 2.0
|
|
*/
|
|
abstract class quiz_nav_panel_base {
|
|
/** @var quiz_attempt */
|
|
protected $attemptobj;
|
|
/** @var question_display_options */
|
|
protected $options;
|
|
/** @var integer */
|
|
protected $page;
|
|
/** @var boolean */
|
|
protected $showall;
|
|
|
|
public function __construct(quiz_attempt $attemptobj,
|
|
question_display_options $options, $page, $showall) {
|
|
$this->attemptobj = $attemptobj;
|
|
$this->options = $options;
|
|
$this->page = $page;
|
|
$this->showall = $showall;
|
|
}
|
|
|
|
protected function get_question_buttons() {
|
|
$html = '<div class="qn_buttons">' . "\n";
|
|
foreach ($this->attemptobj->get_slots() as $slot) {
|
|
$qa = $this->attemptobj->get_question_attempt($slot);
|
|
$showcorrectness = $this->options->correctness && $qa->has_marks();
|
|
$html .= $this->get_question_button($qa, $qa->get_question()->_number,
|
|
$showcorrectness) . "\n";
|
|
}
|
|
$html .= "</div>\n";
|
|
return $html;
|
|
}
|
|
|
|
protected function get_button_id(question_attempt $qa) {
|
|
// The id to put on the button element in the HTML.
|
|
return 'quiznavbutton' . $qa->get_slot();
|
|
}
|
|
|
|
protected function get_question_button(question_attempt $qa, $number, $showcorrectness) {
|
|
$attributes = $this->get_attributes($qa, $showcorrectness);
|
|
|
|
if (is_numeric($number)) {
|
|
$qnostring = 'questionnonav';
|
|
} else {
|
|
$qnostring = 'questionnonavinfo';
|
|
}
|
|
|
|
$a = new stdClass;
|
|
$a->number = $number;
|
|
$a->attributes = implode(' ', $attributes);
|
|
|
|
return '<a href="' . $this->get_question_url($qa->get_slot()) .
|
|
'" class="qnbutton ' . implode(' ', array_keys($attributes)) .
|
|
'" id="' . $this->get_button_id($qa) . '" title="' .
|
|
$qa->get_state_string($showcorrectness) . '">' .
|
|
'<span class="thispageholder"></span><span class="trafficlight"></span>' .
|
|
get_string($qnostring, 'quiz', $a) . '</a>';
|
|
}
|
|
|
|
/**
|
|
* @param question_attempt $qa
|
|
* @param boolean $showcorrectness
|
|
* @return array class name => descriptive string.
|
|
*/
|
|
protected function get_attributes(question_attempt $qa, $showcorrectness) {
|
|
// The current status of the question.
|
|
$attributes = array();
|
|
|
|
// On the current page?
|
|
if ($qa->get_question()->_page == $this->page) {
|
|
$attributes['thispage'] = get_string('onthispage', 'quiz');
|
|
}
|
|
|
|
// Question state.
|
|
$stateclass = $qa->get_state()->get_state_class($showcorrectness);
|
|
if (!$showcorrectness && $stateclass == 'notanswered') {
|
|
$stateclass = 'complete';
|
|
}
|
|
$attributes[$stateclass] = $qa->get_state_string($showcorrectness);
|
|
|
|
// Flagged?
|
|
if ($qa->is_flagged()) {
|
|
$attributes['flagged'] = '<span class="flagstate">' .
|
|
get_string('flagged', 'question') . '</span>';
|
|
} else {
|
|
$attributes[''] = '<span class="flagstate"></span>';
|
|
}
|
|
|
|
return $attributes;
|
|
}
|
|
|
|
protected function get_before_button_bits() {
|
|
return '';
|
|
}
|
|
|
|
abstract protected function get_end_bits();
|
|
|
|
abstract protected function get_question_url($slot);
|
|
|
|
protected function get_user_picture() {
|
|
global $DB, $OUTPUT;
|
|
$user = $DB->get_record('user', array('id' => $this->attemptobj->get_userid()));
|
|
$output = '';
|
|
$output .= '<div id="user-picture" class="clearfix">';
|
|
$output .= $OUTPUT->user_picture($user, array('courseid'=>$this->attemptobj->get_courseid()));
|
|
$output .= ' ' . fullname($user);
|
|
$output .= '</div>';
|
|
return $output;
|
|
}
|
|
|
|
public function get_contents() {
|
|
global $PAGE;
|
|
$PAGE->requires->js_init_call('M.mod_quiz.nav.init', null, false, quiz_get_js_module());
|
|
|
|
$content = '';
|
|
if (!empty($this->attemptobj->get_quiz()->showuserpicture)) {
|
|
$content .= $this->get_user_picture() . "\n";
|
|
}
|
|
$content .= $this->get_before_button_bits();
|
|
$content .= $this->get_question_buttons() . "\n";
|
|
$content .= '<div class="othernav">' . "\n" . $this->get_end_bits() . "\n</div>\n";
|
|
|
|
$bc = new block_contents();
|
|
$bc->id = 'quiznavigation';
|
|
$bc->title = get_string('quiznavigation', 'quiz');
|
|
$bc->content = $content;
|
|
return $bc;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Specialisation of {@link quiz_nav_panel_base} for the attempt quiz page.
|
|
*
|
|
* @copyright 2008 Tim Hunt
|
|
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
|
|
* @since Moodle 2.0
|
|
*/
|
|
class quiz_attempt_nav_panel extends quiz_nav_panel_base {
|
|
protected function get_question_url($slot) {
|
|
return $this->attemptobj->attempt_url($slot, -1, $this->page);
|
|
}
|
|
|
|
protected function get_before_button_bits() {
|
|
return '<div id="quiznojswarning">' . get_string('navnojswarning', 'quiz') . "</div>\n";
|
|
}
|
|
|
|
protected function get_end_bits() {
|
|
global $PAGE;
|
|
$output = '';
|
|
$output .= '<a href="' . s($this->attemptobj->summary_url()) . '" id="endtestlink">' . get_string('endtest', 'quiz') . '</a>';
|
|
$output .= $this->attemptobj->get_timer_html();
|
|
return $output;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Specialisation of {@link quiz_nav_panel_base} for the review quiz page.
|
|
*
|
|
* @copyright 2008 Tim Hunt
|
|
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
|
|
* @since Moodle 2.0
|
|
*/
|
|
class quiz_review_nav_panel extends quiz_nav_panel_base {
|
|
protected function get_question_url($slot) {
|
|
return $this->attemptobj->review_url($slot, -1, $this->showall, $this->page);
|
|
}
|
|
|
|
protected function get_end_bits() {
|
|
$html = '';
|
|
if ($this->attemptobj->get_num_pages() > 1) {
|
|
if ($this->showall) {
|
|
$html .= '<a href="' . $this->attemptobj->review_url(null, 0, false) . '">' . get_string('showeachpage', 'quiz') . '</a>';
|
|
} else {
|
|
$html .= '<a href="' . $this->attemptobj->review_url(null, 0, true) . '">' . get_string('showall', 'quiz') . '</a>';
|
|
}
|
|
}
|
|
$accessmanager = $this->attemptobj->get_access_manager(time());
|
|
$html .= $accessmanager->print_finish_review_link($this->attemptobj->is_preview_user(), true);
|
|
return $html;
|
|
}
|
|
}
|