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990650f94c
This was implemented by Matt Petro of the University of Wisconsin - Madison Engineering School and Math Department. Many thanks. Reviewed by and committed by Tim Hunt. This adds a new Overrides tab to the UI, with sub-tabs Group overrides and User overrides. Each of those lists all the overrides that currently exist, and lets you manage them and create more. When a quiz is being attempted, the override that applies to the current user is combined with the current quiz settings loaded from the quiz table (normally called $quiz). If there are both user and group overrides, then just the specific user override is used (more specific). If the user is in several groups, then the overrides are combined to give the most permissive set of options. There is one new database table quiz_overrides, to store the overrides.
1660 lines
58 KiB
PHP
1660 lines
58 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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* Library of functions for the quiz module.
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*
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* This contains functions that are called also from outside the quiz module
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* Functions that are only called by the quiz module itself are in {@link locallib.php}
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*
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* @package mod-quiz
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* @copyright 1999 onwards Martin Dougiamas {@link http://moodle.com}
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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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/** Require {@link eventslib.php} */
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require_once($CFG->libdir . '/eventslib.php');
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/** Require {@link calendar/lib.php} */
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require_once($CFG->dirroot . '/calendar/lib.php');
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/// CONSTANTS ///////////////////////////////////////////////////////////////////
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/**#@+
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* Options determining how the grades from individual attempts are combined to give
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* the overall grade for a user
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*/
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define('QUIZ_GRADEHIGHEST', 1);
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define('QUIZ_GRADEAVERAGE', 2);
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define('QUIZ_ATTEMPTFIRST', 3);
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define('QUIZ_ATTEMPTLAST', 4);
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/**#@-*/
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define('QUIZ_MAX_ATTEMPT_OPTION', 10);
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define('QUIZ_MAX_QPP_OPTION', 50);
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define('QUIZ_MAX_DECIMAL_OPTION', 5);
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define('QUIZ_MAX_Q_DECIMAL_OPTION', 7);
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/**#@+
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* The different review options are stored in the bits of $quiz->review
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* These constants help to extract the options
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*
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* This is more of a mess than you might think necessary, because originally
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* it was though that 3x6 bits were enough, but then they ran out. PHP integers
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* are only reliably 32 bits signed, so the simplest solution was then to
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* add 4x3 more bits.
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*/
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/**
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* The first 6 + 4 bits refer to the time immediately after the attempt
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*/
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define('QUIZ_REVIEW_IMMEDIATELY', 0x3c003f);
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/**
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* the next 6 + 4 bits refer to the time after the attempt but while the quiz is open
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*/
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define('QUIZ_REVIEW_OPEN', 0x3c00fc0);
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/**
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* the final 6 + 4 bits refer to the time after the quiz closes
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*/
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define('QUIZ_REVIEW_CLOSED', 0x3c03f000);
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// within each group of 6 bits we determine what should be shown
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define('QUIZ_REVIEW_RESPONSES', 1*0x1041); // Show responses
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define('QUIZ_REVIEW_SCORES', 2*0x1041); // Show scores
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define('QUIZ_REVIEW_FEEDBACK', 4*0x1041); // Show question feedback
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define('QUIZ_REVIEW_ANSWERS', 8*0x1041); // Show correct answers
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// Some handling of worked solutions is already in the code but not yet fully supported
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// and not switched on in the user interface.
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define('QUIZ_REVIEW_SOLUTIONS', 16*0x1041); // Show solutions
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define('QUIZ_REVIEW_GENERALFEEDBACK',32*0x1041); // Show question general feedback
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define('QUIZ_REVIEW_OVERALLFEEDBACK', 1*0x4440000); // Show quiz overall feedback
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// Multipliers 2*0x4440000, 4*0x4440000 and 8*0x4440000 are still available
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/**#@-*/
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/**
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* If start and end date for the quiz are more than this many seconds apart
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* they will be represented by two separate events in the calendar
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*/
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define("QUIZ_MAX_EVENT_LENGTH", 5*24*60*60); // 5 days maximum
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/// FUNCTIONS ///////////////////////////////////////////////////////////////////
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/**
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* Given an object containing all the necessary data,
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* (defined by the form in mod_form.php) this function
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* will create a new instance and return the id number
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* of the new instance.
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*
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* @global object
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* @param object $quiz the data that came from the form.
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* @return mixed the id of the new instance on success,
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* false or a string error message on failure.
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*/
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function quiz_add_instance($quiz) {
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global $DB;
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// Process the options from the form.
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$quiz->created = time();
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$quiz->questions = '';
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$result = quiz_process_options($quiz);
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if ($result && is_string($result)) {
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return $result;
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}
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// Try to store it in the database.
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$quiz->id = $DB->insert_record('quiz', $quiz);
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// Do the processing required after an add or an update.
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quiz_after_add_or_update($quiz);
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return $quiz->id;
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}
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/**
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* Given an object containing all the necessary data,
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* (defined by the form in mod_form.php) this function
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* will update an existing instance with new data.
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*
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* @global stdClass
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* @global object
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* @param object $quiz the data that came from the form.
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* @return mixed true on success, false or a string error message on failure.
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*/
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function quiz_update_instance($quiz, $mform) {
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global $CFG, $DB;
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// Process the options from the form.
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$result = quiz_process_options($quiz);
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if ($result && is_string($result)) {
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return $result;
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}
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// Repaginate, if asked to.
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if (!$quiz->shufflequestions && !empty($quiz->repaginatenow)) {
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require_once($CFG->dirroot . '/mod/quiz/locallib.php');
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$quiz->questions = $DB->get_field('quiz', 'questions', array('id' => $quiz->instance));
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$quiz->questions = quiz_repaginate($quiz->questions, $quiz->questionsperpage);
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}
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unset($quiz->repaginatenow);
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// Update the database.
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$quiz->id = $quiz->instance;
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$DB->update_record('quiz', $quiz);
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// Do the processing required after an add or an update.
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quiz_after_add_or_update($quiz);
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// Delete any previous preview attempts
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quiz_delete_previews($quiz);
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return true;
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}
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/**
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* Given an ID of an instance of this module,
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* this function will permanently delete the instance
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* and any data that depends on it.
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*
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* @global object
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* @param int $id
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* @return bool
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*/
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function quiz_delete_instance($id) {
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global $DB;
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if (!$quiz = $DB->get_record('quiz', array('id' => $id))) {
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return false;
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}
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quiz_delete_all_attempts($quiz);
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quiz_delete_all_overrides($quiz);
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$DB->delete_records('quiz_question_instances', array('quiz' => $quiz->id));
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$DB->delete_records('quiz_feedback', array('quizid' => $quiz->id));
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$events = $DB->get_records('event', array('modulename' => 'quiz', 'instance' => $quiz->id));
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foreach($events as $event) {
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$event = calendar_event::load($event);
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$event->delete();
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}
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quiz_grade_item_delete($quiz);
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$DB->delete_records('quiz', array('id' => $quiz->id));
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return true;
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}
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/**
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* Deletes a quiz override from the database and clears any corresponding calendar events
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*
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* @param object $quiz The quiz object.
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* @param integer $overrideid The id of the override being deleted
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* @return bool true on success
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*/
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function quiz_delete_override($quiz, $overrideid) {
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global $DB;
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if (!$override = $DB->get_record('quiz_overrides', array('id' => $overrideid))) {
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return false;
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}
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$groupid = empty($override->groupid)? 0 : $override->groupid;
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$userid = empty($override->userid)? 0 : $override->userid;
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// Delete the events
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$events = $DB->get_records('event', array('modulename'=>'quiz', 'instance'=>$quiz->id, 'groupid'=>$groupid, 'userid'=>$userid));
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foreach($events as $event) {
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$eventold = calendar_event::load($event);
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$eventold->delete();
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}
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$DB->delete_records('quiz_overrides', array('id' => $overrideid));
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return true;
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}
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/**
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* Deletes all quiz overrides from the database and clears any corresponding calendar events
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*
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* @param object $quiz The quiz object.
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*/
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function quiz_delete_all_overrides($quiz) {
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global $DB;
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$overrides = $DB->get_records('quiz_overrides', array('quiz' => $quiz->id), 'id');
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foreach ($overrides as $override) {
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quiz_delete_override($quiz, $override->id);
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}
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}
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/**
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* Updates a quiz object with override information for a user.
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*
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* Algorithm: For each quiz setting, if there is a matching user-specific override,
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* then use that otherwise, if there are group-specific overrides, return the most
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* lenient combination of them. If neither applies, leave the quiz setting unchanged.
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*
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* Special case: if there is more than one password that applies to the user, then
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* quiz->extrapasswords will contain an array of strings giving the remaining
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* passwords.
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*
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* @param object $quiz The quiz object.
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* @param integer $userid The userid.
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* @return object $quiz The updated quiz object.
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*/
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function quiz_update_effective_access($quiz, $userid) {
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global $DB;
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// check for user override
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$override = $DB->get_record('quiz_overrides', array('quiz' => $quiz->id, 'userid' => $userid));
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if (!$override) {
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$override = new stdclass;
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$override->timeopen = null;
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$override->timeclose = null;
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$override->timelimit = null;
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$override->attempts = null;
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$override->password = null;
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}
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// check for group overrides
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$groupings = groups_get_user_groups($quiz->course, $userid);
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$groupingid = empty($cm->groupingid)? 0 : $cm->groupingid;
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if (!empty($groupings[$groupingid])) {
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// Select all overrides that apply to the User's groups
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list($extra, $params) = $DB->get_in_or_equal(array_values($groupings[$groupingid]));
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$sql = "SELECT * FROM {quiz_overrides}
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WHERE groupid $extra AND quiz = ?";
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$params[] = $qiuz->id;
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$records = $DB->get_records_sql($sql, $params);
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// Combine the overrides
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$opens = array();
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$closes = array();
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$limits = array();
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$attempts = array();
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$passwords = array();
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foreach ($records as $gpoverride) {
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if (isset($gpoverride->timeopen)) {
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$opens[] = $gpoverride->timeopen;
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}
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if (isset($gpoverride->timeclose)) {
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$closes[] = $gpoverride->timeclose;
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}
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if (isset($gpoverride->timelimit)) {
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$limits[] = $gpoverride->timelimit;
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}
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if (isset($gpoverride->attempts)) {
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$attempts[] = $gpoverride->attempts;
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}
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if (isset($gpoverride->password)) {
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$passwords[] = $gpoverride->password;
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}
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}
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// If there is a user override for a setting, ignore the group override
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if (is_null($override->timeopen) && count($opens)) {
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$override->timeopen = min($opens);
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}
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if (is_null($override->timeclose) && count($closes)) {
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$override->timeclose = max($closes);
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}
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if (is_null($override->timelimit) && count($limits)) {
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$override->timelimit = max($limits);
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}
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if (is_null($override->attempts) && count($attempts)) {
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$override->attempts = max($attempts);
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}
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if (is_null($override->password) && count($passwords)) {
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$override->password = array_shift($passwords);
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if (count($passwords)) {
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$override->extrapasswords = $passwords;
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}
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}
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}
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// merge with quiz defaults
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$keys = array('timeopen','timeclose', 'timelimit', 'attempts', 'password', 'extrapasswords');
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foreach ($keys as $key) {
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if (isset($override->{$key})) {
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$quiz->{$key} = $override->{$key};
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}
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}
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return $quiz;
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}
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/**
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* Delete all the attempts belonging to a quiz.
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*
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* @global stdClass
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* @global object
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* @param object $quiz The quiz object.
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*/
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function quiz_delete_all_attempts($quiz) {
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global $CFG, $DB;
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require_once($CFG->libdir . '/questionlib.php');
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$attempts = $DB->get_records('quiz_attempts', array('quiz' => $quiz->id));
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foreach ($attempts as $attempt) {
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delete_attempt($attempt->uniqueid);
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}
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$DB->delete_records('quiz_attempts', array('quiz' => $quiz->id));
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$DB->delete_records('quiz_grades', array('quiz' => $quiz->id));
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}
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/**
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* Return a small object with summary information about what a
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* user has done with a given particular instance of this module
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* Used for user activity reports.
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* $return->time = the time they did it
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* $return->info = a short text description
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*
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* @global object
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* @param object $course
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* @param object $user
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* @param object $mod
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* @param object $quiz
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* @return object|null
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*/
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function quiz_user_outline($course, $user, $mod, $quiz) {
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global $DB, $CFG;
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require_once("$CFG->libdir/gradelib.php");
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$grades = grade_get_grades($course->id, 'mod', 'quiz', $quiz->id, $user->id);
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if (empty($grades->items[0]->grades)) {
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return null;
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} else {
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$grade = reset($grades->items[0]->grades);
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}
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$result = new stdClass;
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$result->info = get_string('grade') . ': ' . $grade->str_long_grade;
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$result->time = $grade->dategraded;
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return $result;
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}
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/**
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* Is this a graded quiz? If this method returns true, you can assume that
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* $quiz->grade and $quiz->sumgrades are non-zero (for example, if you want to
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* divide by them).
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*
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* @param object $quiz a row from the quiz table.
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* @return boolean whether this is a graded quiz.
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*/
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function quiz_has_grades($quiz) {
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return $quiz->grade != 0 && $quiz->sumgrades != 0;
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}
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/**
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* Get the best current grade for a particular user in a quiz.
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*
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* @global object
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* @param object $quiz the quiz object.
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* @param integer $userid the id of the user.
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* @return float the user's current grade for this quiz, or NULL if this user does
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* not have a grade on this quiz.
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*/
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function quiz_get_best_grade($quiz, $userid) {
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global $DB;
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$grade = $DB->get_field('quiz_grades', 'grade', array('quiz' => $quiz->id, 'userid' => $userid));
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// Need to detect errors/no result, without catching 0 scores.
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if (is_numeric($grade)) {
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return quiz_format_grade($quiz, $grade);
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} else {
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return NULL;
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}
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}
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/**
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* Print a detailed representation of what a user has done with
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* a given particular instance of this module, for user activity reports.
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*
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* @global object
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* @param object $course
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* @param object $user
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* @param object $mod
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* @param object $quiz
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* @return bool
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*/
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function quiz_user_complete($course, $user, $mod, $quiz) {
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global $DB, $CFG, $OUTPUT;
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require_once("$CFG->libdir/gradelib.php");
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$grades = grade_get_grades($course->id, 'mod', 'quiz', $quiz->id, $user->id);
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if (!empty($grades->items[0]->grades)) {
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$grade = reset($grades->items[0]->grades);
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echo $OUTPUT->container(get_string('grade').': '.$grade->str_long_grade);
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if ($grade->str_feedback) {
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echo $OUTPUT->container(get_string('feedback').': '.$grade->str_feedback);
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}
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}
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if ($attempts = $DB->get_records('quiz_attempts', array('userid' => $user->id, 'quiz' => $quiz->id), 'attempt')) {
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foreach ($attempts as $attempt) {
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echo get_string('attempt', 'quiz').' '.$attempt->attempt.': ';
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if ($attempt->timefinish == 0) {
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print_string('unfinished');
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} else {
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echo quiz_format_grade($quiz, $attempt->sumgrades) . '/' . quiz_format_grade($quiz, $quiz->sumgrades);
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}
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echo ' - '.userdate($attempt->timemodified).'<br />';
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}
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} else {
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print_string('noattempts', 'quiz');
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}
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return true;
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}
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/**
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* Function to be run periodically according to the moodle cron
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* This function searches for things that need to be done, such
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* as sending out mail, toggling flags etc ...
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*
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* @global stdClass
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* @return bool true
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*/
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function quiz_cron() {
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global $CFG;
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return true;
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}
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/**
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* @global object
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* @param integer $quizid the quiz id.
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* @param integer $userid the userid.
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* @param string $status 'all', 'finished' or 'unfinished' to control
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* @param bool $includepreviews
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* @return an array of all the user's attempts at this quiz. Returns an empty array if there are none.
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*/
|
|
function quiz_get_user_attempts($quizid, $userid=0, $status = 'finished', $includepreviews = false) {
|
|
global $DB;
|
|
$status_condition = array(
|
|
'all' => '',
|
|
'finished' => ' AND timefinish > 0',
|
|
'unfinished' => ' AND timefinish = 0'
|
|
);
|
|
$previewclause = '';
|
|
if (!$includepreviews) {
|
|
$previewclause = ' AND preview = 0';
|
|
}
|
|
$params=array($quizid);
|
|
if ($userid){
|
|
$userclause = ' AND userid = ?';
|
|
$params[]=$userid;
|
|
} else {
|
|
$userclause = '';
|
|
}
|
|
if ($attempts = $DB->get_records_select('quiz_attempts',
|
|
"quiz = ?" .$userclause. $previewclause . $status_condition[$status], $params,
|
|
'attempt ASC')) {
|
|
return $attempts;
|
|
} else {
|
|
return array();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Return grade for given user or all users.
|
|
*
|
|
* @global stdClass
|
|
* @global object
|
|
* @param int $quizid id of quiz
|
|
* @param int $userid optional user id, 0 means all users
|
|
* @return array array of grades, false if none. These are raw grades. They should
|
|
* be processed with quiz_format_grade for display.
|
|
*/
|
|
function quiz_get_user_grades($quiz, $userid=0) {
|
|
global $CFG, $DB;
|
|
|
|
$params = array($quiz->id);
|
|
$wheresql = '';
|
|
if ($userid) {
|
|
$params[] = $userid;
|
|
$wheresql = "AND u.id = ?";
|
|
}
|
|
$sql = "SELECT u.id, u.id AS userid, g.grade AS rawgrade, g.timemodified AS dategraded, MAX(a.timefinish) AS datesubmitted
|
|
FROM {user} u, {quiz_grades} g, {quiz_attempts} a
|
|
WHERE u.id = g.userid AND g.quiz = ? AND a.quiz = g.quiz AND u.id = a.userid $wheresql
|
|
GROUP BY u.id, g.grade, g.timemodified";
|
|
|
|
return $DB->get_records_sql($sql, $params);
|
|
}
|
|
|
|
/**
|
|
* Round a grade to to the correct number of decimal places, and format it for display.
|
|
*
|
|
* @param object $quiz The quiz table row, only $quiz->decimalpoints is used.
|
|
* @param float $grade The grade to round.
|
|
* @return float
|
|
*/
|
|
function quiz_format_grade($quiz, $grade) {
|
|
return format_float($grade, $quiz->decimalpoints);
|
|
}
|
|
|
|
/**
|
|
* Round a grade to to the correct number of decimal places, and format it for display.
|
|
*
|
|
* @param object $quiz The quiz table row, only $quiz->decimalpoints is used.
|
|
* @param float $grade The grade to round.
|
|
* @return float
|
|
*/
|
|
function quiz_format_question_grade($quiz, $grade) {
|
|
if ($quiz->questiondecimalpoints == -1) {
|
|
return format_float($grade, $quiz->decimalpoints);
|
|
} else {
|
|
return format_float($grade, $quiz->questiondecimalpoints);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Update grades in central gradebook
|
|
*
|
|
* @global stdClass
|
|
* @global object
|
|
* @param object $quiz
|
|
* @param int $userid specific user only, 0 means all
|
|
*/
|
|
function quiz_update_grades($quiz, $userid=0, $nullifnone=true) {
|
|
global $CFG, $DB;
|
|
require_once($CFG->libdir.'/gradelib.php');
|
|
|
|
if ($quiz->grade == 0) {
|
|
quiz_grade_item_update($quiz);
|
|
|
|
} else if ($grades = quiz_get_user_grades($quiz, $userid)) {
|
|
quiz_grade_item_update($quiz, $grades);
|
|
|
|
} else if ($userid and $nullifnone) {
|
|
$grade = new object();
|
|
$grade->userid = $userid;
|
|
$grade->rawgrade = NULL;
|
|
quiz_grade_item_update($quiz, $grade);
|
|
|
|
} else {
|
|
quiz_grade_item_update($quiz);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Update all grades in gradebook.
|
|
*
|
|
* @global object
|
|
*/
|
|
function quiz_upgrade_grades() {
|
|
global $DB;
|
|
|
|
$sql = "SELECT COUNT('x')
|
|
FROM {quiz} a, {course_modules} cm, {modules} m
|
|
WHERE m.name='quiz' AND m.id=cm.module AND cm.instance=a.id";
|
|
$count = $DB->count_records_sql($sql);
|
|
|
|
$sql = "SELECT a.*, cm.idnumber AS cmidnumber, a.course AS courseid
|
|
FROM {quiz} a, {course_modules} cm, {modules} m
|
|
WHERE m.name='quiz' AND m.id=cm.module AND cm.instance=a.id";
|
|
if ($rs = $DB->get_recordset_sql($sql)) {
|
|
$pbar = new progress_bar('quizupgradegrades', 500, true);
|
|
$i=0;
|
|
foreach ($rs as $quiz) {
|
|
$i++;
|
|
upgrade_set_timeout(60*5); // set up timeout, may also abort execution
|
|
quiz_update_grades($quiz, 0, false);
|
|
$pbar->update($i, $count, "Updating Quiz grades ($i/$count).");
|
|
}
|
|
$rs->close();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Create grade item for given quiz
|
|
*
|
|
* @global stdClass
|
|
* @uses GRADE_TYPE_VALUE
|
|
* @uses GRADE_TYPE_NONE
|
|
* @uses QUIZ_REVIEW_SCORES
|
|
* @uses QUIZ_REVIEW_CLOSED
|
|
* @uses QUIZ_REVIEW_OPEN
|
|
* @uses PARAM_INT
|
|
* @uses GRADE_UPDATE_ITEM_LOCKED
|
|
* @param object $quiz object with extra cmidnumber
|
|
* @param mixed $grades optional array/object of grade(s); 'reset' means reset grades in gradebook
|
|
* @return int 0 if ok, error code otherwise
|
|
*/
|
|
function quiz_grade_item_update($quiz, $grades=NULL) {
|
|
global $CFG, $OUTPUT;
|
|
if (!function_exists('grade_update')) { //workaround for buggy PHP versions
|
|
require_once($CFG->libdir.'/gradelib.php');
|
|
}
|
|
|
|
if (array_key_exists('cmidnumber', $quiz)) { //it may not be always present
|
|
$params = array('itemname'=>$quiz->name, 'idnumber'=>$quiz->cmidnumber);
|
|
} else {
|
|
$params = array('itemname'=>$quiz->name);
|
|
}
|
|
|
|
if ($quiz->grade > 0) {
|
|
$params['gradetype'] = GRADE_TYPE_VALUE;
|
|
$params['grademax'] = $quiz->grade;
|
|
$params['grademin'] = 0;
|
|
|
|
} else {
|
|
$params['gradetype'] = GRADE_TYPE_NONE;
|
|
}
|
|
|
|
/* description by TJ:
|
|
1/ If the quiz is set to not show scores while the quiz is still open, and is set to show scores after
|
|
the quiz is closed, then create the grade_item with a show-after date that is the quiz close date.
|
|
2/ If the quiz is set to not show scores at either of those times, create the grade_item as hidden.
|
|
3/ If the quiz is set to show scores, create the grade_item visible.
|
|
*/
|
|
if (!($quiz->review & QUIZ_REVIEW_SCORES & QUIZ_REVIEW_CLOSED)
|
|
and !($quiz->review & QUIZ_REVIEW_SCORES & QUIZ_REVIEW_OPEN)) {
|
|
$params['hidden'] = 1;
|
|
|
|
} else if ( ($quiz->review & QUIZ_REVIEW_SCORES & QUIZ_REVIEW_CLOSED)
|
|
and !($quiz->review & QUIZ_REVIEW_SCORES & QUIZ_REVIEW_OPEN)) {
|
|
if ($quiz->timeclose) {
|
|
$params['hidden'] = $quiz->timeclose;
|
|
} else {
|
|
$params['hidden'] = 1;
|
|
}
|
|
|
|
} else {
|
|
// a) both open and closed enabled
|
|
// b) open enabled, closed disabled - we can not "hide after", grades are kept visible even after closing
|
|
$params['hidden'] = 0;
|
|
}
|
|
|
|
if ($grades === 'reset') {
|
|
$params['reset'] = true;
|
|
$grades = NULL;
|
|
}
|
|
|
|
$gradebook_grades = grade_get_grades($quiz->course, 'mod', 'quiz', $quiz->id);
|
|
if (!empty($gradebook_grades->items)) {
|
|
$grade_item = $gradebook_grades->items[0];
|
|
if ($grade_item->locked) {
|
|
$confirm_regrade = optional_param('confirm_regrade', 0, PARAM_INT);
|
|
if (!$confirm_regrade) {
|
|
$message = get_string('gradeitemislocked', 'grades');
|
|
$back_link = $CFG->wwwroot . '/mod/quiz/report.php?q=' . $quiz->id . '&mode=overview';
|
|
$regrade_link = qualified_me() . '&confirm_regrade=1';
|
|
echo $OUTPUT->box_start('generalbox', 'notice');
|
|
echo '<p>'. $message .'</p>';
|
|
echo $OUTPUT->container_start('buttons');
|
|
echo $OUTPUT->single_button($regrade_link, get_string('regradeanyway', 'grades'));
|
|
echo $OUTPUT->single_button($back_link, get_string('cancel'));
|
|
echo $OUTPUT->container_end();
|
|
echo $OUTPUT->box_end();
|
|
|
|
return GRADE_UPDATE_ITEM_LOCKED;
|
|
}
|
|
}
|
|
}
|
|
|
|
return grade_update('mod/quiz', $quiz->course, 'mod', 'quiz', $quiz->id, 0, $grades, $params);
|
|
}
|
|
|
|
/**
|
|
* Delete grade item for given quiz
|
|
*
|
|
* @global stdClass
|
|
* @param object $quiz object
|
|
* @return object quiz
|
|
*/
|
|
function quiz_grade_item_delete($quiz) {
|
|
global $CFG;
|
|
require_once($CFG->libdir . '/gradelib.php');
|
|
|
|
return grade_update('mod/quiz', $quiz->course, 'mod', 'quiz', $quiz->id, 0, NULL, array('deleted' => 1));
|
|
}
|
|
|
|
/**
|
|
* @return the options for calculating the quiz grade from the individual attempt grades.
|
|
*/
|
|
function quiz_get_grading_options() {
|
|
return array (
|
|
QUIZ_GRADEHIGHEST => get_string('gradehighest', 'quiz'),
|
|
QUIZ_GRADEAVERAGE => get_string('gradeaverage', 'quiz'),
|
|
QUIZ_ATTEMPTFIRST => get_string('attemptfirst', 'quiz'),
|
|
QUIZ_ATTEMPTLAST => get_string('attemptlast', 'quiz'));
|
|
}
|
|
|
|
/**
|
|
* Returns an array of users who have data in a given quiz
|
|
*
|
|
* @global stdClass
|
|
* @global object
|
|
* @param int $quizid
|
|
* @return array
|
|
*/
|
|
function quiz_get_participants($quizid) {
|
|
global $CFG, $DB;
|
|
|
|
//Get users from attempts
|
|
$us_attempts = $DB->get_records_sql("SELECT DISTINCT u.id, u.id
|
|
FROM {user} u,
|
|
{quiz_attempts} a
|
|
WHERE a.quiz = ? and
|
|
u.id = a.userid", array($quizid));
|
|
|
|
//Return us_attempts array (it contains an array of unique users)
|
|
return $us_attempts;
|
|
|
|
}
|
|
|
|
/**
|
|
* This standard function will check all instances of this module
|
|
* and make sure there are up-to-date events created for each of them.
|
|
* If courseid = 0, then every quiz event in the site is checked, else
|
|
* only quiz events belonging to the course specified are checked.
|
|
* This function is used, in its new format, by restore_refresh_events()
|
|
*
|
|
* @global object
|
|
* @uses QUIZ_MAX_EVENT_LENGTH
|
|
* @param int $courseid
|
|
* @return bool
|
|
*/
|
|
function quiz_refresh_events($courseid = 0) {
|
|
global $DB;
|
|
|
|
if ($courseid == 0) {
|
|
if (! $quizzes = $DB->get_records('quiz')) {
|
|
return true;
|
|
}
|
|
} else {
|
|
if (! $quizzes = $DB->get_records('quiz', array('course' => $courseid))) {
|
|
return true;
|
|
}
|
|
}
|
|
|
|
foreach ($quizzes as $quiz) {
|
|
quiz_update_events($quiz);
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Returns all quiz graded users since a given time for specified quiz
|
|
*
|
|
* @global stdClass
|
|
* @global object
|
|
* @global object
|
|
* @global object
|
|
* @uses CONTEXT_MODULE
|
|
* @param array $activities By reference
|
|
* @param int $index By reference
|
|
* @param int $timestart
|
|
* @param int $courseid
|
|
* @param int $cmid
|
|
* @param int $userid
|
|
* @param int $groupid
|
|
* @return void
|
|
*/
|
|
function quiz_get_recent_mod_activity(&$activities, &$index, $timestart, $courseid, $cmid, $userid=0, $groupid=0) {
|
|
global $CFG, $COURSE, $USER, $DB;
|
|
|
|
if ($COURSE->id == $courseid) {
|
|
$course = $COURSE;
|
|
} else {
|
|
$course = $DB->get_record('course', array('id' => $courseid));
|
|
}
|
|
|
|
$modinfo =& get_fast_modinfo($course);
|
|
|
|
$cm = $modinfo->cms[$cmid];
|
|
|
|
$params = array($timestart, $cm->instance);
|
|
|
|
if ($userid) {
|
|
$userselect = "AND u.id = ?";
|
|
$params[] = $userid;
|
|
} else {
|
|
$userselect = "";
|
|
}
|
|
|
|
if ($groupid) {
|
|
$groupselect = "AND gm.groupid = ?";
|
|
$groupjoin = "JOIN {groups_members} gm ON gm.userid=u.id";
|
|
$params[] = $groupid;
|
|
} else {
|
|
$groupselect = "";
|
|
$groupjoin = "";
|
|
}
|
|
|
|
if (!$attempts = $DB->get_records_sql("SELECT qa.*, q.sumgrades AS maxgrade,
|
|
u.firstname, u.lastname, u.email, u.picture
|
|
FROM {quiz_attempts} qa
|
|
JOIN {quiz} q ON q.id = qa.quiz
|
|
JOIN {user} u ON u.id = qa.userid
|
|
$groupjoin
|
|
WHERE qa.timefinish > $timestart AND q.id = $cm->instance
|
|
$userselect $groupselect
|
|
ORDER BY qa.timefinish ASC", $params)) {
|
|
return;
|
|
}
|
|
|
|
$cm_context = get_context_instance(CONTEXT_MODULE, $cm->id);
|
|
$grader = has_capability('moodle/grade:viewall', $cm_context);
|
|
$accessallgroups = has_capability('moodle/site:accessallgroups', $cm_context);
|
|
$viewfullnames = has_capability('moodle/site:viewfullnames', $cm_context);
|
|
$grader = has_capability('mod/quiz:grade', $cm_context);
|
|
$groupmode = groups_get_activity_groupmode($cm, $course);
|
|
|
|
if (is_null($modinfo->groups)) {
|
|
$modinfo->groups = groups_get_user_groups($course->id); // load all my groups and cache it in modinfo
|
|
}
|
|
|
|
$aname = format_string($cm->name,true);
|
|
foreach ($attempts as $attempt) {
|
|
if ($attempt->userid != $USER->id) {
|
|
if (!$grader) {
|
|
// grade permission required
|
|
continue;
|
|
}
|
|
|
|
if ($groupmode == SEPARATEGROUPS and !$accessallgroups) {
|
|
$usersgroups = groups_get_all_groups($course->id, $attempt->userid, $cm->groupingid);
|
|
if (!is_array($usersgroups)) {
|
|
continue;
|
|
}
|
|
$usersgroups = array_keys($usersgroups);
|
|
$interset = array_intersect($usersgroups, $modinfo->groups[$cm->id]);
|
|
if (empty($intersect)) {
|
|
continue;
|
|
}
|
|
}
|
|
}
|
|
|
|
$tmpactivity = new object();
|
|
|
|
$tmpactivity->type = 'quiz';
|
|
$tmpactivity->cmid = $cm->id;
|
|
$tmpactivity->name = $aname;
|
|
$tmpactivity->sectionnum= $cm->sectionnum;
|
|
$tmpactivity->timestamp = $attempt->timefinish;
|
|
|
|
$tmpactivity->content->attemptid = $attempt->id;
|
|
$tmpactivity->content->sumgrades = $attempt->sumgrades;
|
|
$tmpactivity->content->maxgrade = $attempt->maxgrade;
|
|
$tmpactivity->content->attempt = $attempt->attempt;
|
|
|
|
$tmpactivity->user->userid = $attempt->userid;
|
|
$tmpactivity->user->fullname = fullname($attempt, $viewfullnames);
|
|
$tmpactivity->user->picture = $attempt->picture;
|
|
|
|
$activities[$index++] = $tmpactivity;
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
/**
|
|
* @global stdClass
|
|
* @param object $activity
|
|
* @param int $courseid
|
|
* @param bool $detail
|
|
* @param array $modnames
|
|
* @return void output is echo'd
|
|
*/
|
|
function quiz_print_recent_mod_activity($activity, $courseid, $detail, $modnames) {
|
|
global $CFG, $OUTPUT;
|
|
|
|
echo '<table border="0" cellpadding="3" cellspacing="0" class="forum-recent">';
|
|
|
|
echo "<tr><td class=\"userpicture\" valign=\"top\">";
|
|
echo $OUTPUT->user_picture($activity->user, array('courseid'=>$courseid));
|
|
echo "</td><td>";
|
|
|
|
if ($detail) {
|
|
$modname = $modnames[$activity->type];
|
|
echo '<div class="title">';
|
|
echo "<img src=\"" . $OUTPUT->pix_url('icon', $activity->type) . "\" ".
|
|
"class=\"icon\" alt=\"$modname\" />";
|
|
echo "<a href=\"$CFG->wwwroot/mod/quiz/view.php?id={$activity->cmid}\">{$activity->name}</a>";
|
|
echo '</div>';
|
|
}
|
|
|
|
echo '<div class="grade">';
|
|
echo get_string("attempt", "quiz")." {$activity->content->attempt}: ";
|
|
$grades = "({$activity->content->sumgrades} / {$activity->content->maxgrade})";
|
|
echo "<a href=\"$CFG->wwwroot/mod/quiz/review.php?attempt={$activity->content->attemptid}\">$grades</a>";
|
|
echo '</div>';
|
|
|
|
echo '<div class="user">';
|
|
echo "<a href=\"$CFG->wwwroot/user/view.php?id={$activity->user->userid}&course=$courseid\">"
|
|
."{$activity->user->fullname}</a> - ".userdate($activity->timestamp);
|
|
echo '</div>';
|
|
|
|
echo "</td></tr></table>";
|
|
|
|
return;
|
|
}
|
|
|
|
/**
|
|
* Pre-process the quiz options form data, making any necessary adjustments.
|
|
* Called by add/update instance in this file.
|
|
*
|
|
* @uses QUIZ_REVIEW_OVERALLFEEDBACK
|
|
* @uses QUIZ_REVIEW_CLOSED
|
|
* @uses QUIZ_REVIEW_OPEN
|
|
* @uses QUIZ_REVIEW_IMMEDIATELY
|
|
* @uses QUIZ_REVIEW_GENERALFEEDBACK
|
|
* @uses QUIZ_REVIEW_SOLUTIONS
|
|
* @uses QUIZ_REVIEW_ANSWERS
|
|
* @uses QUIZ_REVIEW_FEEDBACK
|
|
* @uses QUIZ_REVIEW_SCORES
|
|
* @uses QUIZ_REVIEW_RESPONSES
|
|
* @uses QUESTION_ADAPTIVE
|
|
* @param object $quiz The variables set on the form.
|
|
* @return string
|
|
*/
|
|
function quiz_process_options(&$quiz) {
|
|
$quiz->timemodified = time();
|
|
|
|
// Quiz name.
|
|
if (!empty($quiz->name)) {
|
|
$quiz->name = trim($quiz->name);
|
|
}
|
|
|
|
// Password field - different in form to stop browsers that remember passwords
|
|
// getting confused.
|
|
$quiz->password = $quiz->quizpassword;
|
|
unset($quiz->quizpassword);
|
|
|
|
// Quiz feedback
|
|
if (isset($quiz->feedbacktext)) {
|
|
// Clean up the boundary text.
|
|
for ($i = 0; $i < count($quiz->feedbacktext); $i += 1) {
|
|
if (empty($quiz->feedbacktext[$i])) {
|
|
$quiz->feedbacktext[$i] = '';
|
|
} else {
|
|
$quiz->feedbacktext[$i] = trim($quiz->feedbacktext[$i]);
|
|
}
|
|
}
|
|
|
|
// Check the boundary value is a number or a percentage, and in range.
|
|
$i = 0;
|
|
while (!empty($quiz->feedbackboundaries[$i])) {
|
|
$boundary = trim($quiz->feedbackboundaries[$i]);
|
|
if (!is_numeric($boundary)) {
|
|
if (strlen($boundary) > 0 && $boundary[strlen($boundary) - 1] == '%') {
|
|
$boundary = trim(substr($boundary, 0, -1));
|
|
if (is_numeric($boundary)) {
|
|
$boundary = $boundary * $quiz->grade / 100.0;
|
|
} else {
|
|
return get_string('feedbackerrorboundaryformat', 'quiz', $i + 1);
|
|
}
|
|
}
|
|
}
|
|
if ($boundary <= 0 || $boundary >= $quiz->grade) {
|
|
return get_string('feedbackerrorboundaryoutofrange', 'quiz', $i + 1);
|
|
}
|
|
if ($i > 0 && $boundary >= $quiz->feedbackboundaries[$i - 1]) {
|
|
return get_string('feedbackerrororder', 'quiz', $i + 1);
|
|
}
|
|
$quiz->feedbackboundaries[$i] = $boundary;
|
|
$i += 1;
|
|
}
|
|
$numboundaries = $i;
|
|
|
|
// Check there is nothing in the remaining unused fields.
|
|
if (!empty($quiz->feedbackboundaries)) {
|
|
for ($i = $numboundaries; $i < count($quiz->feedbackboundaries); $i += 1) {
|
|
if (!empty($quiz->feedbackboundaries[$i]) && trim($quiz->feedbackboundaries[$i]) != '') {
|
|
return get_string('feedbackerrorjunkinboundary', 'quiz', $i + 1);
|
|
}
|
|
}
|
|
}
|
|
for ($i = $numboundaries + 1; $i < count($quiz->feedbacktext); $i += 1) {
|
|
if (!empty($quiz->feedbacktext[$i]) && trim($quiz->feedbacktext[$i]) != '') {
|
|
return get_string('feedbackerrorjunkinfeedback', 'quiz', $i + 1);
|
|
}
|
|
}
|
|
$quiz->feedbackboundaries[-1] = $quiz->grade + 1; // Needs to be bigger than $quiz->grade because of '<' test in quiz_feedback_for_grade().
|
|
$quiz->feedbackboundaries[$numboundaries] = 0;
|
|
$quiz->feedbackboundarycount = $numboundaries;
|
|
}
|
|
|
|
// Settings that get combined to go into the optionflags column.
|
|
$quiz->optionflags = 0;
|
|
if (!empty($quiz->adaptive)) {
|
|
$quiz->optionflags |= QUESTION_ADAPTIVE;
|
|
}
|
|
|
|
// Settings that get combined to go into the review column.
|
|
$review = 0;
|
|
if (isset($quiz->responsesimmediately)) {
|
|
$review += (QUIZ_REVIEW_RESPONSES & QUIZ_REVIEW_IMMEDIATELY);
|
|
unset($quiz->responsesimmediately);
|
|
}
|
|
if (isset($quiz->responsesopen)) {
|
|
$review += (QUIZ_REVIEW_RESPONSES & QUIZ_REVIEW_OPEN);
|
|
unset($quiz->responsesopen);
|
|
}
|
|
if (isset($quiz->responsesclosed)) {
|
|
$review += (QUIZ_REVIEW_RESPONSES & QUIZ_REVIEW_CLOSED);
|
|
unset($quiz->responsesclosed);
|
|
}
|
|
|
|
if (isset($quiz->scoreimmediately)) {
|
|
$review += (QUIZ_REVIEW_SCORES & QUIZ_REVIEW_IMMEDIATELY);
|
|
unset($quiz->scoreimmediately);
|
|
}
|
|
if (isset($quiz->scoreopen)) {
|
|
$review += (QUIZ_REVIEW_SCORES & QUIZ_REVIEW_OPEN);
|
|
unset($quiz->scoreopen);
|
|
}
|
|
if (isset($quiz->scoreclosed)) {
|
|
$review += (QUIZ_REVIEW_SCORES & QUIZ_REVIEW_CLOSED);
|
|
unset($quiz->scoreclosed);
|
|
}
|
|
|
|
if (isset($quiz->feedbackimmediately)) {
|
|
$review += (QUIZ_REVIEW_FEEDBACK & QUIZ_REVIEW_IMMEDIATELY);
|
|
unset($quiz->feedbackimmediately);
|
|
}
|
|
if (isset($quiz->feedbackopen)) {
|
|
$review += (QUIZ_REVIEW_FEEDBACK & QUIZ_REVIEW_OPEN);
|
|
unset($quiz->feedbackopen);
|
|
}
|
|
if (isset($quiz->feedbackclosed)) {
|
|
$review += (QUIZ_REVIEW_FEEDBACK & QUIZ_REVIEW_CLOSED);
|
|
unset($quiz->feedbackclosed);
|
|
}
|
|
|
|
if (isset($quiz->answersimmediately)) {
|
|
$review += (QUIZ_REVIEW_ANSWERS & QUIZ_REVIEW_IMMEDIATELY);
|
|
unset($quiz->answersimmediately);
|
|
}
|
|
if (isset($quiz->answersopen)) {
|
|
$review += (QUIZ_REVIEW_ANSWERS & QUIZ_REVIEW_OPEN);
|
|
unset($quiz->answersopen);
|
|
}
|
|
if (isset($quiz->answersclosed)) {
|
|
$review += (QUIZ_REVIEW_ANSWERS & QUIZ_REVIEW_CLOSED);
|
|
unset($quiz->answersclosed);
|
|
}
|
|
|
|
if (isset($quiz->solutionsimmediately)) {
|
|
$review += (QUIZ_REVIEW_SOLUTIONS & QUIZ_REVIEW_IMMEDIATELY);
|
|
unset($quiz->solutionsimmediately);
|
|
}
|
|
if (isset($quiz->solutionsopen)) {
|
|
$review += (QUIZ_REVIEW_SOLUTIONS & QUIZ_REVIEW_OPEN);
|
|
unset($quiz->solutionsopen);
|
|
}
|
|
if (isset($quiz->solutionsclosed)) {
|
|
$review += (QUIZ_REVIEW_SOLUTIONS & QUIZ_REVIEW_CLOSED);
|
|
unset($quiz->solutionsclosed);
|
|
}
|
|
|
|
if (isset($quiz->generalfeedbackimmediately)) {
|
|
$review += (QUIZ_REVIEW_GENERALFEEDBACK & QUIZ_REVIEW_IMMEDIATELY);
|
|
unset($quiz->generalfeedbackimmediately);
|
|
}
|
|
if (isset($quiz->generalfeedbackopen)) {
|
|
$review += (QUIZ_REVIEW_GENERALFEEDBACK & QUIZ_REVIEW_OPEN);
|
|
unset($quiz->generalfeedbackopen);
|
|
}
|
|
if (isset($quiz->generalfeedbackclosed)) {
|
|
$review += (QUIZ_REVIEW_GENERALFEEDBACK & QUIZ_REVIEW_CLOSED);
|
|
unset($quiz->generalfeedbackclosed);
|
|
}
|
|
|
|
if (isset($quiz->overallfeedbackimmediately)) {
|
|
$review += (QUIZ_REVIEW_OVERALLFEEDBACK & QUIZ_REVIEW_IMMEDIATELY);
|
|
unset($quiz->overallfeedbackimmediately);
|
|
}
|
|
if (isset($quiz->overallfeedbackopen)) {
|
|
$review += (QUIZ_REVIEW_OVERALLFEEDBACK & QUIZ_REVIEW_OPEN);
|
|
unset($quiz->overallfeedbackopen);
|
|
}
|
|
if (isset($quiz->overallfeedbackclosed)) {
|
|
$review += (QUIZ_REVIEW_OVERALLFEEDBACK & QUIZ_REVIEW_CLOSED);
|
|
unset($quiz->overallfeedbackclosed);
|
|
}
|
|
|
|
$quiz->review = $review;
|
|
}
|
|
|
|
/**
|
|
* This function is called at the end of quiz_add_instance
|
|
* and quiz_update_instance, to do the common processing.
|
|
*
|
|
* @global object
|
|
* @uses QUIZ_MAX_EVENT_LENGTH
|
|
* @param object $quiz the quiz object.
|
|
* @return void|string Void or error message
|
|
*/
|
|
function quiz_after_add_or_update($quiz) {
|
|
global $DB;
|
|
|
|
// Save the feedback
|
|
$DB->delete_records('quiz_feedback', array('quizid' => $quiz->id));
|
|
|
|
for ($i = 0; $i <= $quiz->feedbackboundarycount; $i += 1) {
|
|
$feedback = new stdClass;
|
|
$feedback->quizid = $quiz->id;
|
|
$feedback->feedbacktext = $quiz->feedbacktext[$i];
|
|
$feedback->mingrade = $quiz->feedbackboundaries[$i];
|
|
$feedback->maxgrade = $quiz->feedbackboundaries[$i - 1];
|
|
$DB->insert_record('quiz_feedback', $feedback, false);
|
|
}
|
|
|
|
// Update the events relating to this quiz.
|
|
quiz_update_events($quiz);
|
|
|
|
//update related grade item
|
|
quiz_grade_item_update($quiz);
|
|
|
|
}
|
|
|
|
/**
|
|
* This function updates the events associated to the quiz.
|
|
* If $override is non-zero, then it updates only the events
|
|
* associated with the specified override.
|
|
*
|
|
* @uses QUIZ_MAX_EVENT_LENGTH
|
|
* @param object $quiz the quiz object.
|
|
* @param object optional $override limit to a specific override
|
|
*/
|
|
function quiz_update_events($quiz, $override = null) {
|
|
global $DB;
|
|
|
|
// Load the old events relating to this quiz.
|
|
$conds = array('modulename'=>'quiz',
|
|
'instance'=>$quiz->id);
|
|
if (!empty($override)) {
|
|
// only load events for this override
|
|
$conds['groupid'] = isset($override->groupid)? $override->groupid : 0;
|
|
$conds['userid'] = isset($override->userid)? $override->userid : 0;
|
|
}
|
|
$oldevents = $DB->get_records('event', $conds);
|
|
|
|
// Now make a todo list of all that needs to be updated
|
|
if (empty($override)) {
|
|
// We are updating the primary settings for the quiz, so we
|
|
// need to add all the overrides
|
|
$overrides = $DB->get_records('quiz_overrides', array('quiz' => $quiz->id));
|
|
// as well as the original quiz (empty override)
|
|
$overrides[] = new stdClass;
|
|
}
|
|
else {
|
|
// Just do the one override
|
|
$overrides = array($override);
|
|
}
|
|
|
|
foreach ($overrides as $current) {
|
|
$groupid = isset($current->groupid)? $current->groupid : 0;
|
|
$userid = isset($current->userid)? $current->userid : 0;
|
|
$timeopen = isset($current->timeopen)? $current->timeopen : $quiz->timeopen;
|
|
$timeclose = isset($current->timeclose)? $current->timeclose : $quiz->timeclose;
|
|
|
|
// only add open/close events for an override if they differ from the quiz default
|
|
$addopen = empty($current->id) || !empty($current->timeopen);
|
|
$addclose = empty($current->id) || !empty($current->timeclose);
|
|
|
|
$event = new stdClass;
|
|
$event->description = $quiz->intro;
|
|
$event->courseid = ($userid) ? 0 : $quiz->course; // Events module won't show user events when the courseid is nonzero
|
|
$event->groupid = $groupid;
|
|
$event->userid = $userid;
|
|
$event->modulename = 'quiz';
|
|
$event->instance = $quiz->id;
|
|
$event->timestart = $timeopen;
|
|
$event->timeduration = max($timeclose - $timeopen, 0);
|
|
$event->visible = instance_is_visible('quiz', $quiz);
|
|
$event->eventtype = 'open';
|
|
|
|
// Determine the event name
|
|
if ($groupid) {
|
|
$params = new stdClass;
|
|
$params->quiz = $quiz->name;
|
|
$params->group = groups_get_group_name($groupid);
|
|
if ($params->group === false) {
|
|
// group doesn't exist, just skip it
|
|
continue;
|
|
}
|
|
$eventname = get_string('overridegroupeventname', 'quiz', $params);
|
|
}
|
|
else if ($userid) {
|
|
$params = new stdClass;
|
|
$params->quiz = $quiz->name;
|
|
$eventname = get_string('overrideusereventname', 'quiz', $params);
|
|
} else {
|
|
$eventname = $quiz->name;
|
|
}
|
|
if ($addopen or $addclose) {
|
|
if ($timeclose and $timeopen and $event->timeduration <= QUIZ_MAX_EVENT_LENGTH) {
|
|
// Single event for the whole quiz.
|
|
if ($oldevent = array_shift($oldevents)) {
|
|
$event->id = $oldevent->id;
|
|
}
|
|
else {
|
|
unset($event->id);
|
|
}
|
|
$event->name = $eventname;
|
|
// calendar_event::create will reuse a db record if the id field is set
|
|
calendar_event::create($event);
|
|
} else {
|
|
// Separate start and end events.
|
|
$event->timeduration = 0;
|
|
if ($timeopen && $addopen) {
|
|
if ($oldevent = array_shift($oldevents)) {
|
|
$event->id = $oldevent->id;
|
|
}
|
|
else {
|
|
unset($event->id);
|
|
}
|
|
$event->name = $eventname.' ('.get_string('quizopens', 'quiz').')';
|
|
// calendar_event::create will reuse a db record if the id field is set
|
|
calendar_event::create($event);
|
|
}
|
|
if ($timeclose && $addclose) {
|
|
if ($oldevent = array_shift($oldevents)) {
|
|
$event->id = $oldevent->id;
|
|
}
|
|
else {
|
|
unset($event->id);
|
|
}
|
|
$event->name = $eventname.' ('.get_string('quizcloses', 'quiz').')';
|
|
$event->timestart = $timeclose;
|
|
$event->eventtype = 'close';
|
|
calendar_event::create($event);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// Delete any leftover events
|
|
foreach ($oldevents as $badevent) {
|
|
$badevent = calendar_event::load($badevent);
|
|
$badevent->delete();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @return array
|
|
*/
|
|
function quiz_get_view_actions() {
|
|
return array('view', 'view all', 'report', 'review');
|
|
}
|
|
|
|
/**
|
|
* @return array
|
|
*/
|
|
function quiz_get_post_actions() {
|
|
return array('attempt', 'close attempt', 'preview', 'editquestions', 'delete attempt', 'manualgrade');
|
|
}
|
|
|
|
/**
|
|
* Returns an array of names of quizzes that use this question
|
|
*
|
|
* @param integer $questionid
|
|
* @return array of strings
|
|
*/
|
|
function quiz_question_list_instances($questionid) {
|
|
global $CFG, $DB;
|
|
|
|
// TODO MDL-5780: we should also consider other questions that are used by
|
|
// random questions in this quiz, but that is very hard.
|
|
|
|
$sql = "SELECT q.id, q.name
|
|
FROM {quiz} q
|
|
JOIN {quiz_question_instances} qqi ON q.id = qqi.quiz
|
|
WHERE qqi.question = ?";
|
|
|
|
if ($instances = $DB->get_records_sql_menu($sql, array($questionid))) {
|
|
return $instances;
|
|
}
|
|
return array();
|
|
}
|
|
|
|
/**
|
|
* Implementation of the function for printing the form elements that control
|
|
* whether the course reset functionality affects the quiz.
|
|
*
|
|
* @param $mform form passed by reference
|
|
*/
|
|
function quiz_reset_course_form_definition(&$mform) {
|
|
$mform->addElement('header', 'quizheader', get_string('modulenameplural', 'quiz'));
|
|
$mform->addElement('advcheckbox', 'reset_quiz_attempts', get_string('removeallquizattempts','quiz'));
|
|
}
|
|
|
|
/**
|
|
* Course reset form defaults.
|
|
* @return array
|
|
*/
|
|
function quiz_reset_course_form_defaults($course) {
|
|
return array('reset_quiz_attempts'=>1);
|
|
}
|
|
|
|
/**
|
|
* Removes all grades from gradebook
|
|
*
|
|
* @global stdClass
|
|
* @global object
|
|
* @param int $courseid
|
|
* @param string optional type
|
|
*/
|
|
function quiz_reset_gradebook($courseid, $type='') {
|
|
global $CFG, $DB;
|
|
|
|
$sql = "SELECT q.*, cm.idnumber as cmidnumber, q.course as courseid
|
|
FROM {quiz} q, {course_modules} cm, {modules} m
|
|
WHERE m.name='quiz' AND m.id=cm.module AND cm.instance=q.id AND q.course=?";
|
|
|
|
if ($quizs = $DB->get_records_sql($sql, array($courseid))) {
|
|
foreach ($quizs as $quiz) {
|
|
quiz_grade_item_update($quiz, 'reset');
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Actual implementation of the rest coures functionality, delete all the
|
|
* quiz attempts for course $data->courseid, if $data->reset_quiz_attempts is
|
|
* set and true.
|
|
*
|
|
* Also, move the quiz open and close dates, if the course start date is changing.
|
|
*
|
|
* @global stdClass
|
|
* @global object
|
|
* @param object $data the data submitted from the reset course.
|
|
* @return array status array
|
|
*/
|
|
function quiz_reset_userdata($data) {
|
|
global $CFG, $DB;
|
|
require_once($CFG->libdir.'/questionlib.php');
|
|
|
|
$componentstr = get_string('modulenameplural', 'quiz');
|
|
$status = array();
|
|
|
|
/// Delete attempts.
|
|
if (!empty($data->reset_quiz_attempts)) {
|
|
$quizzes = $DB->get_records('quiz', array('course' => $data->courseid));
|
|
foreach ($quizzes as $quiz) {
|
|
quiz_delete_all_attempts($quiz);
|
|
}
|
|
|
|
// remove all grades from gradebook
|
|
if (empty($data->reset_gradebook_grades)) {
|
|
quiz_reset_gradebook($data->courseid);
|
|
}
|
|
$status[] = array('component' => $componentstr, 'item' => get_string('attemptsdeleted', 'quiz'), 'error' => false);
|
|
}
|
|
|
|
/// updating dates - shift may be negative too
|
|
if ($data->timeshift) {
|
|
shift_course_mod_dates('quiz', array('timeopen', 'timeclose'), $data->timeshift, $data->courseid);
|
|
$status[] = array('component' => $componentstr, 'item' => get_string('openclosedatesupdated', 'quiz'), 'error' => false);
|
|
}
|
|
|
|
return $status;
|
|
}
|
|
|
|
/**
|
|
* Checks whether the current user is allowed to view a file uploaded in a quiz.
|
|
* Teachers can view any from their courses, students can only view their own.
|
|
*
|
|
* @global object
|
|
* @global object
|
|
* @uses CONTEXT_COURSE
|
|
* @param int $attemptuniqueid int attempt id
|
|
* @param int $questionid int question id
|
|
* @return boolean to indicate access granted or denied
|
|
*/
|
|
function quiz_check_file_access($attemptuniqueid, $questionid) {
|
|
global $USER, $DB;
|
|
|
|
$attempt = $DB->get_record('quiz_attempts', array('uniqueid' => $attemptuniqueid));
|
|
$quiz = $DB->get_record('quiz', array('id' => $attempt->quiz));
|
|
$context = get_context_instance(CONTEXT_COURSE, $quiz->course);
|
|
|
|
// access granted if the current user submitted this file
|
|
if ($attempt->userid == $USER->id) {
|
|
return true;
|
|
// access granted if the current user has permission to grade quizzes in this course
|
|
} else if (has_capability('mod/quiz:viewreports', $context) || has_capability('mod/quiz:grade', $context)) {
|
|
return true;
|
|
}
|
|
|
|
// otherwise, this user does not have permission
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Prints quiz summaries on MyMoodle Page
|
|
*
|
|
* @global object
|
|
* @global object
|
|
* @param arry $courses
|
|
* @param array $htmlarray
|
|
*/
|
|
function quiz_print_overview($courses, &$htmlarray) {
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global $USER, $CFG;
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/// These next 6 Lines are constant in all modules (just change module name)
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if (empty($courses) || !is_array($courses) || count($courses) == 0) {
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return array();
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}
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if (!$quizzes = get_all_instances_in_courses('quiz', $courses)) {
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return;
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}
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/// Fetch some language strings outside the main loop.
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$strquiz = get_string('modulename', 'quiz');
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$strnoattempts = get_string('noattempts', 'quiz');
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/// We want to list quizzes that are currently available, and which have a close date.
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/// This is the same as what the lesson does, and the dabate is in MDL-10568.
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$now = time();
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foreach ($quizzes as $quiz) {
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if ($quiz->timeclose >= $now && $quiz->timeopen < $now) {
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/// Give a link to the quiz, and the deadline.
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$str = '<div class="quiz overview">' .
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'<div class="name">' . $strquiz . ': <a ' . ($quiz->visible ? '' : ' class="dimmed"') .
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' href="' . $CFG->wwwroot . '/mod/quiz/view.php?id=' . $quiz->coursemodule . '">' .
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$quiz->name . '</a></div>';
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$str .= '<div class="info">' . get_string('quizcloseson', 'quiz', userdate($quiz->timeclose)) . '</div>';
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/// Now provide more information depending on the uers's role.
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$context = get_context_instance(CONTEXT_MODULE, $quiz->coursemodule);
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if (has_capability('mod/quiz:viewreports', $context)) {
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/// For teacher-like people, show a summary of the number of student attempts.
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// The $quiz objects returned by get_all_instances_in_course have the necessary $cm
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// fields set to make the following call work.
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$str .= '<div class="info">' . quiz_num_attempt_summary($quiz, $quiz, true) . '</div>';
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} else if (has_any_capability(array('mod/quiz:reviewmyattempts', 'mod/quiz:attempt'), $context)) { // Student
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/// For student-like people, tell them how many attempts they have made.
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if (isset($USER->id) && ($attempts = quiz_get_user_attempts($quiz->id, $USER->id))) {
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$numattempts = count($attempts);
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$str .= '<div class="info">' . get_string('numattemptsmade', 'quiz', $numattempts) . '</div>';
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} else {
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$str .= '<div class="info">' . $strnoattempts . '</div>';
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}
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} else {
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/// For ayone else, there is no point listing this quiz, so stop processing.
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continue;
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}
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/// Add the output for this quiz to the rest.
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$str .= '</div>';
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if (empty($htmlarray[$quiz->course]['quiz'])) {
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$htmlarray[$quiz->course]['quiz'] = $str;
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} else {
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$htmlarray[$quiz->course]['quiz'] .= $str;
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}
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}
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}
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}
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/**
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* Return a textual summary of the number of attemtps that have been made at a particular quiz,
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* returns '' if no attemtps have been made yet, unless $returnzero is passed as true.
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*
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* @global stdClass
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* @global object
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* @global object
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* @param object $quiz the quiz object. Only $quiz->id is used at the moment.
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* @param object $cm the cm object. Only $cm->course, $cm->groupmode and $cm->groupingid fields are used at the moment.
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* @param boolean $returnzero if false (default), when no attempts have been made '' is returned instead of 'Attempts: 0'.
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* @param int $currentgroup if there is a concept of current group where this method is being called
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* (e.g. a report) pass it in here. Default 0 which means no current group.
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* @return string a string like "Attempts: 123", "Attemtps 123 (45 from your groups)" or
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* "Attemtps 123 (45 from this group)".
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*/
|
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function quiz_num_attempt_summary($quiz, $cm, $returnzero = false, $currentgroup = 0) {
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global $CFG, $USER, $DB;
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$numattempts = $DB->count_records('quiz_attempts', array('quiz'=> $quiz->id, 'preview'=>0));
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if ($numattempts || $returnzero) {
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if (groups_get_activity_groupmode($cm)) {
|
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$a->total = $numattempts;
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if ($currentgroup) {
|
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$a->group = $DB->count_records_sql('SELECT count(1) FROM ' .
|
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'{quiz_attempts} qa JOIN ' .
|
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'{groups_members} gm ON qa.userid = gm.userid ' .
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'WHERE quiz = ? AND preview = 0 AND groupid = ?', array($quiz->id, $currentgroup));
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return get_string('attemptsnumthisgroup', 'quiz', $a);
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} else if ($groups = groups_get_all_groups($cm->course, $USER->id, $cm->groupingid)) {
|
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list($usql, $params) = $DB->get_in_or_equal(array_keys($groups));
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$a->group = $DB->count_records_sql('SELECT count(1) FROM ' .
|
|
'{quiz_attempts} qa JOIN ' .
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'{groups_members} gm ON qa.userid = gm.userid ' .
|
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'WHERE quiz = ? AND preview = 0 AND ' .
|
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"groupid $usql", array_merge(array($quiz->id), $params));
|
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return get_string('attemptsnumyourgroups', 'quiz', $a);
|
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}
|
|
}
|
|
return get_string('attemptsnum', 'quiz', $numattempts);
|
|
}
|
|
return '';
|
|
}
|
|
|
|
/**
|
|
* @uses FEATURE_GROUPS
|
|
* @uses FEATURE_GROUPINGS
|
|
* @uses FEATURE_GROUPMEMBERSONLY
|
|
* @uses FEATURE_MOD_INTRO
|
|
* @uses FEATURE_COMPLETION_TRACKS_VIEWS
|
|
* @uses FEATURE_GRADE_HAS_GRADE
|
|
* @uses FEATURE_GRADE_OUTCOMES
|
|
* @param string $feature FEATURE_xx constant for requested feature
|
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* @return bool True if quiz supports feature
|
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*/
|
|
function quiz_supports($feature) {
|
|
switch($feature) {
|
|
case FEATURE_GROUPS: return true;
|
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case FEATURE_GROUPINGS: return true;
|
|
case FEATURE_GROUPMEMBERSONLY: return true;
|
|
case FEATURE_MOD_INTRO: return true;
|
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case FEATURE_COMPLETION_TRACKS_VIEWS: return true;
|
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case FEATURE_GRADE_HAS_GRADE: return true;
|
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case FEATURE_GRADE_OUTCOMES: return true;
|
|
case FEATURE_MOD_SUBPLUGINS: return array('quiz'=>'mod/quiz/report');
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|
|
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default: return null;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @global object
|
|
* @global stdClass
|
|
* @return array all other caps used in module
|
|
*/
|
|
function quiz_get_extra_capabilities() {
|
|
global $DB, $CFG;
|
|
require_once($CFG->libdir.'/questionlib.php');
|
|
$caps = question_get_all_capabilities();
|
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$reportcaps = $DB->get_records_select_menu('capabilities', 'name LIKE ?', array('quizreport/%'), 'id,name');
|
|
$caps = array_merge($caps, $reportcaps);
|
|
$caps[] = 'moodle/site:accessallgroups';
|
|
return $caps;
|
|
}
|
|
|
|
/**
|
|
* This fucntion extends the global navigaiton for the site.
|
|
* It is important to note that you should not rely on PAGE objects within this
|
|
* body of code as there is no guarantee that during an AJAX request they are
|
|
* available
|
|
*
|
|
* @param navigation_node $navigation The quiz node within the global navigation
|
|
* @param stdClass $course The course object returned from the DB
|
|
* @param stdClass $module The module object returned from the DB
|
|
* @param stdClass $cm The course module isntance returned from the DB
|
|
*/
|
|
function quiz_extend_navigation($navigation, $course, $module, $cm) {
|
|
/**
|
|
* This is currently just a stub so that it can be easily expanded upon.
|
|
* When expanding just remove this comment and the line below and then add
|
|
* you content.
|
|
*/
|
|
$navigation->nodetype = navigation_node::NODETYPE_LEAF;
|
|
}
|
|
|
|
/**
|
|
* This function extends the settings navigation block for the site.
|
|
*
|
|
* It is safe to rely on PAGE here as we will only ever be within the module
|
|
* context when this is called
|
|
*
|
|
* @param navigation_node $settings
|
|
* @param stdClass $module
|
|
*/
|
|
function quiz_extend_settings_navigation($settings, $module) {
|
|
global $PAGE, $CFG, $OUTPUT;
|
|
|
|
$quiznavkey = $settings->add(get_string('quizadministration', 'quiz'));
|
|
$quiznav = $settings->get($quiznavkey);
|
|
$quiznav->forceopen = true;
|
|
|
|
if (has_capability('mod/quiz:view', $PAGE->cm->context)) {
|
|
$url = new moodle_url('/mod/quiz/view.php', array('id'=>$PAGE->cm->id));
|
|
$quiznav->add(get_string('info', 'quiz'), $url, navigation_node::TYPE_SETTING, null, null, new pix_icon('i/info', ''));
|
|
}
|
|
if (has_capability('mod/quiz:viewreports', $PAGE->cm->context)) {
|
|
$url = new moodle_url('/mod/quiz/report.php', array('q'=>$PAGE->cm->instance));
|
|
$reportkey = $quiznav->add(get_string('results', 'quiz'), $url, navigation_node::TYPE_SETTING, null, null, new pix_icon('i/report', ''));
|
|
|
|
require_once($CFG->dirroot.'/mod/quiz/report/reportlib.php');
|
|
$reportlist = quiz_report_list($PAGE->cm->context);
|
|
foreach ($reportlist as $report) {
|
|
$url = new moodle_url('/mod/quiz/report.php', array('q'=>$PAGE->cm->instance, 'mode'=>$report));
|
|
$quiznav->get($reportkey)->add(get_string($report, 'quiz_'.$report), $url, navigation_node::TYPE_SETTING, null, null, new pix_icon('i/item', ''));
|
|
}
|
|
}
|
|
if (has_capability('mod/quiz:preview', $PAGE->cm->context)) {
|
|
$url = new moodle_url('/mod/quiz/startattempt.php', array('cmid'=>$PAGE->cm->id, 'sesskey'=>sesskey()));
|
|
$quiznav->add(get_string('preview', 'quiz'), $url, navigation_node::TYPE_SETTING, null, null, new pix_icon('t/preview', ''));
|
|
}
|
|
if (has_capability('mod/quiz:manage', $PAGE->cm->context)) {
|
|
$url = new moodle_url('/mod/quiz/edit.php', array('cmid'=>$PAGE->cm->id));
|
|
$quiznav->add(get_string('edit'), $url, navigation_node::TYPE_SETTING, null, null, new pix_icon('t/edit', ''));
|
|
}
|
|
|
|
if (has_capability('moodle/course:manageactivities', $PAGE->cm->context)) {
|
|
$url = new moodle_url('/course/mod.php', array('update' => $PAGE->cm->id, 'return' => true, 'sesskey' => sesskey()));
|
|
$quiznav->add(get_string('updatethis', '', get_string('modulename', 'quiz')), $url);
|
|
}
|
|
|
|
if (count($quiznav->children)<1) {
|
|
$settings->remove_child($quiznavkey);
|
|
}
|
|
}
|