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generator.php
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<?php
// This file is part of Moodle - http://moodle.org/
//
// Moodle is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Moodle is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
/**
* Random course generator. By Nicolas Connault and friends.
*
* To use go to .../admin/generator.php?web_interface=1 in your browser.
*
* @package generator
* @copyright 2009 Nicolas Connault
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
require_once(dirname(__FILE__).'/../config.php');
require_once($CFG->libdir . '/formslib.php');
require_once($CFG->dirroot .'/course/lib.php');
require_once($CFG->libdir .'/filelib.php');
define('GENERATOR_RANDOM', 0);
define('GENERATOR_SEQUENCE', 1);
/**
* Controller class for data generation
*/
class generator {
public $modules_to_ignore = array('hotpot', 'lams', 'journal', 'scorm', 'exercise', 'dialogue');
public $modules_list = array('forum' => 'forum',
'assignment' => 'assignment',
'chat' => 'chat',
'data' => 'data',
'glossary' => 'glossary',
'quiz' => 'quiz',
'comments' => 'comments',
'feedback' => 'feedback',
'label' => 'label',
'lesson' => 'lesson',
'chat' => 'chat',
'choice' => 'choice',
'resource' => 'resource',
'survey' => 'survey',
'wiki' => 'wiki',
'workshop' => 'workshop');
public $resource_types = array('text', 'file', 'html', 'repository', 'directory', 'ims');
public $glossary_formats = array('continuous', 'encyclopedia', 'entrylist', 'faq', 'fullwithauthor', 'fullwithoutauthor', 'dictionary');
public $assignment_types = array('upload', 'uploadsingle', 'online', 'offline');
public $forum_types = array('general'); // others include 'single', 'eachuser', 'qanda'
public $resource_type_counter = 0;
public $assignment_type_counter = 0;
public $forum_type_counter = 0;
public $settings = array();
public $eolchar = '<br />';
public $do_generation = false;
public $starttime;
public $original_db;
public function __construct($settings = array(), $generate=false) {
global $CFG;
$this->starttime = time()+microtime();
$arguments = array(
array('short'=>'u', 'long'=>'username',
'help' => 'Your moodle username', 'type'=>'STRING', 'default' => ''),
array('short'=>'pw', 'long'=>'password',
'help' => 'Your moodle password', 'type'=>'STRING', 'default' => ''),
array('short'=>'P', 'long' => 'database_prefix',
'help' => 'Database prefix to use: tables must already exist or the script will abort!',
'type'=>'STRING', 'default' => $CFG->prefix),
array('short'=>'c', 'long' => 'pre_cleanup', 'help' => 'Delete previously generated data'),
array('short'=>'C', 'long' => 'post_cleanup',
'help' => 'Deletes all generated data at the end of the script (for benchmarking of generation only)'),
array('short'=>'t', 'long' => 'time_limit',
'help' => 'Optional time limit after which to abort the generation, 0 = no limit. Default=0',
'type'=>'SECONDS', 'default' => 0),
array('short'=>'v', 'long' => 'verbose', 'help' => 'Display extra information about the data generation'),
array('short'=>'q', 'long' => 'quiet', 'help' => 'Inhibits all outputs'),
array('short'=>'i', 'long' => 'ignore_errors', 'help' => 'Continue script execution when errors occur'),
array('short'=>'N', 'long' => 'no_data', 'help' => 'Generate nothing (used for cleaning up only)'),
array('short'=>'T', 'long' => 'tiny',
'help' => 'Generates a tiny data set (1 of each course, module, user and section)',
'default' => 0),
array('short'=>'nc', 'long' => 'number_of_courses',
'help' => 'The number of courses to generate. Default=1',
'type'=>'NUMBER', 'default' => 1),
array('short'=>'ns', 'long' => 'number_of_students',
'help' => 'The number of students to generate. Default=250',
'type'=>'NUMBER', 'default' => 250),
array('short'=>'sc', 'long' => 'students_per_course',
'help' => 'The number of students to enrol in each course. Default=20',
'type'=>'NUMBER', 'default' => 20),
array('short'=>'nsec', 'long' => 'number_of_sections',
'help' => 'The number of sections to generate in each course. Default=10',
'type'=>'NUMBER', 'default' => 10),
array('short'=>'nmod', 'long' => 'number_of_modules',
'help' => 'The number of modules to generate in each section. Default=10',
'type'=>'NUMBER', 'default' => 10),
array('short'=>'mods', 'long' => 'modules_list',
'help' => 'The list of modules you want to generate', 'default' => $this->modules_list,
'type' => 'mod1,mod2...'),
array('short'=>'rt', 'long' => 'resource_type',
'help' => 'The specific type of resource you want to generate. Defaults to all',
'default' => $this->resource_types,
'type' => 'SELECT'),
array('short'=>'at', 'long' => 'assignment_type',
'help' => 'The specific type of assignment you want to generate. Defaults to all',
'default' => $this->assignment_types,
'type' => 'SELECT'),
array('short'=>'ft', 'long' => 'forum_type',
'help' => 'The specific type of forum you want to generate. Defaults to all',
'default' => $this->forum_types,
'type' => 'SELECT'),
array('short'=>'gf', 'long' => 'glossary_format',
'help' => 'The specific format of glossary you want to generate. Defaults to all',
'default' => $this->glossary_formats,
'type' => 'SELECT'),
array('short'=>'ag', 'long' => 'assignment_grades',
'help' => 'Generate random grades for each student/assignment tuple', 'default' => true),
array('short'=>'qg', 'long' => 'quiz_grades',
'help' => 'Generate random grades for each student/quiz tuple', 'default' => true),
array('short'=>'eg', 'long' => 'entries_per_glossary',
'help' => 'The number of definitions to generate per glossary. Default=0',
'type'=>'NUMBER', 'default' => 1),
array('short'=>'nq', 'long' => 'questions_per_course',
'help' => 'The number of questions to generate per course. Default=20',
'type'=>'NUMBER', 'default' => 20),
array('short'=>'qq', 'long' => 'questions_per_quiz',
'help' => 'The number of questions to assign to each quiz. Default=5',
'type'=>'NUMBER', 'default' => 5),
array('short'=>'df', 'long' => 'discussions_per_forum',
'help' => 'The number of discussions to generate for each forum. Default=5',
'type'=>'NUMBER', 'default' => 5),
array('short'=>'pd', 'long' => 'posts_per_discussion',
'help' => 'The number of posts to generate for each forum discussion. Default=15',
'type'=>'NUMBER', 'default' => 15),
array('short'=>'fd', 'long' => 'fields_per_database',
'help' => 'The number of fields to generate for each database. Default=4',
'type'=>'NUMBER', 'default' => 4),
array('short'=>'drs', 'long' => 'database_records_per_student',
'help' => 'The number of records to generate for each student/database tuple. Default=1',
'type'=>'NUMBER', 'default' => 1),
array('short'=>'mc', 'long' => 'messages_per_chat',
'help' => 'The number of messages to generate for each chat module. Default=10',
'type'=>'NUMBER', 'default' => 10),
);
foreach ($arguments as $args_array) {
$this->settings[$args_array['long']] = new generator_argument($args_array);
}
foreach ($settings as $setting => $value) {
$this->settings[$setting]->value = $value;
}
if ($generate) {
$this->generate_data();
}
}
public function connect() {
global $DB, $CFG;
$this->original_db = $DB;
$class = get_class($DB);
$DB = new $class();
$DB->connect($CFG->dbhost, $CFG->dbuser, $CFG->dbpass, $CFG->dbname, $this->get('database_prefix'));
}
public function dispose() {
global $DB;
$DB->dispose();
$DB = $this->original_db;
}
public function generate_users() {
global $DB, $CFG;
/**
* USER GENERATION
*/
$this->verbose("Generating ".$this->get('number_of_students')." students...");
$lastnames = array('SMITH','JOHNSON','WILLIAMS','JONES','BROWN','DAVIS','MILLER','WILSON',
'MOORE','TAYLOR','ANDERSON','THOMAS','JACKSON','WHITE','HARRIS','MARTIN','THOMPSON',
'GARCIA','MARTINEZ','ROBINSON','CLARK','RODRIGUEZ','LEWIS','LEE','WALKER','HALL',
'ALLEN','YOUNG','HERNANDEZ','KING','WRIGHT','LOPEZ','HILL','SCOTT','GREEN','ADAMS',
'BAKER','GONZALEZ','NELSON','CARTER','MITCHELL','PEREZ','ROBERTS','TURNER','PHILLIPS',
'CAMPBELL','PARKER','EVANS','EDWARDS','COLLINS','STEWART','SANCHEZ','MORRIS','ROGERS',
'REED','COOK','MORGAN','BELL','MURPHY','BAILEY','RIVERA','COOPER','RICHARDSON','COX',
'HOWARD','WARD','TORRES','PETERSON','GRAY','RAMIREZ','JAMES','WATSON','BROOKS','KELLY',
'SANDERS','PRICE','BENNETT','WOOD','BARNES','ROSS','HENDERSON','COLEMAN','JENKINS','PERRY',
'POWELL','LONG','PATTERSON','HUGHES','FLORES','WASHINGTON','BUTLER','SIMMONS','FOSTER',
'GONZALES','BRYANT','ALEXANDER','RUSSELL','GRIFFIN','DIAZ','HAYES','MYERS','FORD','HAMILTON',
'GRAHAM','SULLIVAN','WALLACE','WOODS','COLE','WEST','JORDAN','OWENS','REYNOLDS','FISHER',
'ELLIS','HARRISON','GIBSON','MCDONALD','CRUZ','MARSHALL','ORTIZ','GOMEZ','MURRAY','FREEMAN',
'WELLS','WEBB','SIMPSON','STEVENS','TUCKER','PORTER','HUNTER','HICKS','CRAWFORD','HENRY',
'BOYD','MASON','MORALES','KENNEDY','WARREN','DIXON','RAMOS','REYES','BURNS','GORDON','SHAW',
'HOLMES','RICE','ROBERTSON','HUNT','BLACK','DANIELS','PALMER','MILLS','NICHOLS','GRANT',
'KNIGHT','FERGUSON','ROSE','STONE','HAWKINS','DUNN','PERKINS','HUDSON','SPENCER','GARDNER',
'STEPHENS','PAYNE','PIERCE','BERRY','MATTHEWS','ARNOLD','WAGNER','WILLIS','RAY','WATKINS',
'OLSON','CARROLL','DUNCAN','SNYDER','HART','CUNNINGHAM','BRADLEY','LANE','ANDREWS','RUIZ',
'HARPER','FOX','RILEY','ARMSTRONG','CARPENTER','WEAVER','GREENE','LAWRENCE','ELLIOTT','CHAVEZ',
'SIMS','AUSTIN','PETERS','KELLEY','FRANKLIN','LAWSON','FIELDS','GUTIERREZ','RYAN','SCHMIDT',
'CARR','VASQUEZ','CASTILLO','WHEELER','CHAPMAN','OLIVER','MONTGOMERY','RICHARDS','WILLIAMSON',
'JOHNSTON','BANKS','MEYER','BISHOP','MCCOY','HOWELL','ALVAREZ','MORRISON','HANSEN','FERNANDEZ',
'GARZA','HARVEY','LITTLE','BURTON','STANLEY','NGUYEN','GEORGE','JACOBS','REID','KIM','FULLER',
'LYNCH','DEAN','GILBERT','GARRETT','ROMERO','WELCH','LARSON','FRAZIER','BURKE','HANSON','DAY',
'MENDOZA','MORENO','BOWMAN','MEDINA','FOWLER');
$firstnames = array( 'JAMES','JOHN','ROBERT','MARY','MICHAEL','WILLIAM','DAVID','RICHARD',
'CHARLES','JOSEPH','THOMAS','PATRICIA','LINDA','CHRISTOPHER','BARBARA','DANIEL','PAUL',
'MARK','ELIZABETH','JENNIFER','DONALD','GEORGE','MARIA','KENNETH','SUSAN','STEVEN','EDWARD',
'MARGARET','BRIAN','DOROTHY','RONALD','ANTHONY','LISA','KEVIN','NANCY','KAREN','BETTY',
'HELEN','JASON','MATTHEW','GARY','TIMOTHY','SANDRA','JOSE','LARRY','JEFFREY','DONNA',
'FRANK','CAROL','RUTH','SCOTT','ERIC','STEPHEN','ANDREW','SHARON','MICHELLE','LAURA',
'SARAH','KIMBERLY','DEBORAH','JESSICA','RAYMOND','SHIRLEY','CYNTHIA','ANGELA','MELISSA',
'BRENDA','AMY','GREGORY','ANNA','JOSHUA','JERRY','REBECCA','VIRGINIA','KATHLEEN','PAMELA',
'DENNIS','MARTHA','DEBRA','AMANDA','STEPHANIE','WALTER','PATRICK','CAROLYN','CHRISTINE',
'PETER','MARIE','JANET','CATHERINE','HAROLD','FRANCES','DOUGLAS','HENRY','ANN','JOYCE',
'DIANE','ALICE','JULIE','CARL','HEATHER');
$users_count = 0;
$users = array();
shuffle($lastnames);
shuffle($firstnames);
$next_user_id = $DB->get_field_sql("SELECT MAX(id) FROM {user}") + 1;
for ($i = 0; $i < $this->get('number_of_students'); $i++) {
$lastname = trim(ucfirst(strtolower($lastnames[rand(0, count($lastnames) - 1)])));
$firstname = $firstnames[rand(0, count($firstnames) - 1)];
$user = new stdClass();
$user->firstname = trim(ucfirst(strtolower($firstname)));
$user->username = strtolower(substr($firstname, 0, 7) . substr($lastname, 0, 7)) . $next_user_id++;
$user->lastname = $lastname;
$user->email = $user->username . '@example.com';
$user->mnethostid = 1;
$user->city = 'Test City';
$user->country = 'AU';
$user->password = md5('password');
$user->auth = 'manual';
$user->confirmed = 1;
$user->lang = $CFG->lang;
$user->timemodified= time();
$user->id = $DB->insert_record("user", $user);
$users_count++;
$users[] = $user->id;
$next_user_id = $user->id + 1;
$this->verbose("Inserted $user->firstname $user->lastname into DB "
."(username=$user->username, password=password).");
}
if (!$this->get('quiet')) {
echo "$users_count users correctly inserted in the database.{$this->eolchar}";
}
return $users;
}
public function generate_data() {
if (!$this->do_generation) {
return false;
}
set_time_limit($this->get('time_limit'));
// Process tiny data set
$tiny = $this->get('tiny');
if (!empty($tiny)) {
$this->verbose("Generating a tiny data set: 1 student in 1 course with 1 module in 1 section...");
$this->set('number_of_courses',1);
$this->set('number_of_students',1);
$this->set('number_of_modules',1);
$this->set('number_of_sections',1);
$this->set('assignment_grades',false);
$this->set('quiz_grades',false);
$this->set('students_per_course',1);
$this->set('questions_per_course',1);
$this->set('questions_per_quiz',1);
}
if ($this->get('pre_cleanup')) {
$this->verbose("Deleting previous test data...");
$this->data_cleanup();
if (!$this->get('quiet')) {
echo "Previous test data has been deleted.{$this->eolchar}";
}
}
if (!$this->get('no_data')) {
$users = $this->generate_users();
$courses = $this->generate_courses();
$modules = $this->generate_modules($courses);
$questions = $this->generate_questions($courses, $modules);
$course_users = $this->generate_role_assignments($users, $courses);
$this->generate_forum_posts($course_users, $modules);
$this->generate_grades($course_users, $courses, $modules);
$this->generate_module_content($course_users, $courses, $modules);
}
if ($this->get('post_cleanup')) {
if (!$this->get('quiet')) {
echo "Removing generated data..." . $this->eolchar;
}
$this->data_cleanup();
if (!$this->get('quiet')) {
echo "Generated data has been deleted." . $this->eolchar;
}
}
/**
* FINISHING SCRIPT
*/
$stoptimer = time()+microtime();
$timer = round($stoptimer-$this->starttime,4);
if (!$this->get('quiet')) {
echo "End of script! ($timer seconds taken){$this->eolchar}";
}
}
public function generate_courses() {
global $DB;
$this->verbose("Generating " . $this->get('number_of_courses')." courses...");
$base_course = new stdClass();
$next_course_id = $DB->get_field_sql("SELECT MAX(id) FROM {course}") + 1;
$base_course->MAX_FILE_SIZE = '2097152';
$base_course->category = '1';
$base_course->summary = 'Blah Blah';
$base_course->format = 'weeks';
$base_course->numsections = '10';
$base_course->startdate = mktime();
$base_course->id = '0';
$courses_count = 0;
$courses = array();
for ($i = 1; $i <= $this->get('number_of_courses'); $i++) {
$newcourse = fullclone($base_course);
$newcourse->fullname = "Test course $next_course_id";
$newcourse->shortname = "Test $next_course_id";
$newcourse->idnumber = $next_course_id;
if (!$course = create_course($newcourse)) {
$this->verbose("Error inserting a new course in the database!");
if (!$this->get('ignore_errors')) {
die();
}
} else {
$courses_count++;
$next_course_id++;
$courses[] = $course->id;
$next_course_id = $course->id + 1;
$this->verbose("Inserted $course->fullname into DB (idnumber=$course->idnumber).");
}
}
if (!$this->get('quiet')) {
echo "$courses_count test courses correctly inserted into the database.{$this->eolchar}";
}
return $courses;
}
public function generate_modules($courses) {
global $DB, $CFG;
// Parse the modules-list variable
$this->verbose("Generating " . $this->get('number_of_sections')." sections with "
.$this->get('number_of_modules')." modules in each section, for each course...");
list($modules_list_sql, $modules_params) =
$DB->get_in_or_equal($this->get('modules_list'), SQL_PARAMS_NAMED, 'mod', true);
list($modules_ignored_sql, $ignore_params) =
$DB->get_in_or_equal($this->modules_to_ignore, SQL_PARAMS_NAMED, 'ignore', false);
$wheresql = "name $modules_list_sql AND name $modules_ignored_sql";
$modules = $DB->get_records_select('modules', $wheresql, array_merge($modules_params, $ignore_params));
foreach ($modules as $key => $module) {
$module->count = 0;
// Scorm, lams and hotpot are too complex to set up, remove them
if (in_array($module->name, $this->modules_to_ignore) ||
!in_array($module->name, $this->modules_list)) {
unset($modules[$key]);
}
}
// Dirty hack for renumbering the modules array's keys
$first_module = reset($modules);
array_shift($modules);
array_unshift($modules, $first_module);
$modules_array = array();
if (count($courses) > 0) {
$libraries = array();
foreach ($courses as $courseid) {
// Text resources
for ($i = 1; $i <= $this->get('number_of_sections'); $i++) {
for ($j = 0; $j < $this->get('number_of_modules'); $j++) {
$module = new stdClass();
// If only one module is created, and we also need to add a question to a quiz, create only a quiz
if ($this->get('number_of_modules') == 1
&& $this->get('questions_per_quiz') > 0
&& !empty($modules[8])) {
$moduledata = $modules[8];
} else {
$moduledata = $modules[array_rand($modules)];
}
$libfile = "$CFG->dirroot/mod/$moduledata->name/lib.php";
if (file_exists($libfile)) {
if (!in_array($libfile, $libraries)) {
$this->verbose("Including library for $moduledata->name...");
$libraries[] = $libfile;
require_once($libfile);
}
} else {
$this->verbose("Could not load lib file for module $moduledata->name!");
if (!$this->get('ignore_errors')) {
die();
}
}
// Basically 2 types of text fields: description and content
$description = "This $moduledata->name has been randomly generated by a very useful script, "
. "for the purpose of testing "
. "the boundaries of Moodle in various contexts. Moodle should be able to scale to "
. "any size without "
. "its speed and ease of use being affected dramatically.";
$content = 'Very useful content, I am sure you would agree';
$module_type_index = 0;
$module->introformat = FORMAT_MOODLE;
$module->messageformat = FORMAT_MOODLE;
// Special module-specific config
switch ($moduledata->name) {
case 'assignment':
$module->intro = $description;
$module->assignmenttype = $this->get_module_type('assignment');
$module->timedue = mktime() + 89487321;
$module->grade = rand(50,100);
break;
case 'chat':
$module->intro = $description;
$module->schedule = 1;
$module->chattime = 60 * 60 * 4;
break;
case 'data':
$module->intro = $description;
$module->name = 'test';
break;
case 'choice':
$module->intro = $description;
$module->text = $content;
$module->option = array('Good choice', 'Bad choice', 'No choice');
$module->limit = array(1, 5, 0);
break;
case 'comments':
$module->intro = $description;
$module->comments = $content;
break;
case 'feedback':
$module->intro = $description;
$module->page_after_submit = $description;
$module->comments = $content;
break;
case 'forum':
$module->intro = $description;
$module->type = $this->get_module_type('forum');
$module->forcesubscribe = rand(0, 1);
$module->format = 1;
break;
case 'glossary':
$module->intro = $description;
$module->displayformat = $this->glossary_formats[rand(0, count($this->glossary_formats) - 1)];
$module->cmidnumber = rand(0,999999);
break;
case 'label':
$module->content = $content;
$module->intro = $description;
break;
case 'lesson':
$module->lessondefault = 1;
$module->available = mktime();
$module->deadline = mktime() + 719891987;
$module->grade = 100;
break;
case 'quiz':
$module->intro = $description;
$module->feedbacktext = 'blah';
$module->feedback = 1;
$module->feedbackboundaries = array(2, 1);
$module->grade = 10;
$module->timeopen = time();
$module->timeclose = time() + 68854;
$module->shufflequestions = true;
$module->shuffleanswers = true;
$module->quizpassword = '';
break;
case 'resource':
$module->type = $this->get_module_type('resource');
$module->alltext = $content;
$module->summary = $description;
$module->windowpopup = rand(0,1);
$module->display = rand(0,1);
$module->resizable = rand(0,1);
$module->scrollbars = rand(0,1);
$module->directories = rand(0,1);
$module->location = 'file.txt';
$module->menubar = rand(0,1);
$module->toolbar = rand(0,1);
$module->status = rand(0,1);
$module->width = rand(200,600);
$module->height = rand(200,600);
$module->directories = rand(0,1);
$module->files = false;
$module->param_navigationmenu = rand(0,1);
$module->param_navigationbuttons = rand(0,1);
$module->reference = 1;
$module->forcedownload = 1;
break;
case 'survey':
$module->template = rand(1,5);
$module->intro = $description;
break;
case 'wiki':
$module->intro = $description;
$module->summary = $description;
break;
}
$module->name = ucfirst($moduledata->name) . ' ' . $moduledata->count++;
$module->course = $courseid;
$module->section = $i;
$module->module = $moduledata->id;
$module->modulename = $moduledata->name;
$module->add = $moduledata->name;
$module->cmidnumber = '';
$module->coursemodule = '';
$add_instance_function = $moduledata->name . '_add_instance';
$section = get_course_section($i, $courseid);
$module->section = $section->id;
$module->coursemodule = add_course_module($module);
$module->section = $i;
if (function_exists($add_instance_function)) {
$this->verbose("Calling module function $add_instance_function");
$module->instance = $add_instance_function($module, '');
$DB->set_field('course_modules', 'instance', $module->instance, array('id'=>$module->coursemodule));
} else {
$this->verbose("Function $add_instance_function does not exist!");
if (!$this->get('ignore_errors')) {
die();
}
}
add_mod_to_section($module);
$module->cmidnumber = set_coursemodule_idnumber($module->coursemodule, '');
$this->verbose("A $moduledata->name module was added to section $i (id $module->section) "
."of course $courseid.");
rebuild_course_cache($courseid);
$module_instance = $DB->get_field('course_modules', 'instance', array('id' => $module->coursemodule));
$module_record = $DB->get_record($moduledata->name, array('id' => $module_instance));
$module_record->instance = $module_instance;
if (empty($modules_array[$moduledata->name])) {
$modules_array[$moduledata->name] = array();
}
// TODO Find out why some $module_record end up empty here... (particularly quizzes)
if (!empty($module_record->instance)) {
$modules_array[$moduledata->name][] = $module_record;
}
}
}
}
if (!$this->get('quiet')) {
echo "Successfully generated " . $this->get('number_of_modules') * $this->get('number_of_sections')
. " modules in each course!{$this->eolchar}";
}
return $modules_array;
}
return null;
}
public function generate_questions($courses, $modules) {
global $DB, $CFG;
if (!is_null($this->get('questions_per_course')) && count($courses) > 0 && is_array($courses)) {
require_once($CFG->libdir .'/questionlib.php');
require_once($CFG->dirroot .'/mod/quiz/editlib.php');
$questions = array();
$questionsmenu = question_bank::get_creatable_qtypes();
$questiontypes = array();
foreach ($questionsmenu as $qtype => $qname) {
$questiontypes[] = $qtype;
}
// Add the questions
foreach ($courses as $courseid) {
$questions[$courseid] = array();
for ($i = 0; $i < $this->get('questions_per_course'); $i++) {
$qtype = $questiontypes[array_rand($questiontypes)];
// Only the following types are supported right now. Hang around for more!
$supported_types = array('match', 'essay', 'multianswer', 'multichoice', 'shortanswer',
'numerical', 'truefalse', 'calculated');
$qtype = $supported_types[array_rand($supported_types)];
if ($qtype == 'calculated') {
continue;
}
$classname = "question_{$qtype}_qtype";
if ($qtype == 'multianswer') {
$classname = "embedded_cloze_qtype";
}
$question = new $classname();
$question->qtype = $qtype;
$questions[$courseid][] = $question->generate_test("question$qtype-$i", $courseid);
$this->verbose("Generated a question of type $qtype for course id $courseid.");
}
}
// Assign questions to quizzes, if such exist
if (!empty($modules['quiz']) && !empty($questions) && !is_null($this->get('questions_per_quiz'))) {
$quizzes = $modules['quiz'];
// Cannot assign more questions per quiz than are available, so determine which is the largest
$questions_per_quiz = max(count($questions), $this->get('questions_per_quiz'));
foreach ($quizzes as $quiz) {
$questions_added = array();
for ($i = 0; $i < $questions_per_quiz; $i++) {
// Add a random question to the quiz
do {
if (empty($quiz->course)) {
print_object($quizzes);die();
}
$random = rand(0, count($questions[$quiz->course]));
} while (in_array($random, $questions_added) || !array_key_exists($random, $questions[$quiz->course]));
if (!quiz_add_quiz_question($questions[$quiz->course][$random]->id, $quiz)) {
// Could not add question to quiz!! report error
if (!$this->get('quiet')) {
echo "WARNING: Could not add question id $random to quiz id $quiz->id{$this->eolchar}";
}
} else {
$this->verbose("Adding question id $random to quiz id $quiz->id.");
$questions_added[] = $random;
}
}
}
}
return $questions;
}
return null;
}
public function generate_role_assignments($users, $courses) {
global $CFG, $DB;
$course_users = array();
if (count($courses) > 0) {
$this->verbose("Inserting student->course role assignments...");
$assigned_count = 0;
$assigned_users = array();
foreach ($courses as $courseid) {
$course_users[$courseid] = array();
// Select $students_per_course for assignment to course
shuffle($users);
$users_to_assign = array_slice($users, 0, $this->get('students_per_course'));
$context = get_context_instance(CONTEXT_COURSE, $courseid);
foreach ($users_to_assign as $random_user) {
role_assign(5, $random_user, $context->id);
$assigned_count++;
$course_users[$courseid][] = $random_user;
if (!isset($assigned_users[$random_user])) {
$assigned_users[$random_user] = 1;
} else {
$assigned_users[$random_user]++;
}
$this->verbose("Student $random_user was assigned to course $courseid.");
}
}
if (!$this->get('quiet')) {
echo "$assigned_count user => course role assignments have been correctly performed.{$this->eolchar}";
}
return $course_users;
}
return null;
}
public function generate_forum_posts($course_users, $modules) {
global $CFG, $DB, $USER;
if (in_array('forum', $this->modules_list) &&
$this->get('discussions_per_forum') &&
$this->get('posts_per_discussion') &&
isset($modules['forum'])) {
$discussions_count = 0;
$posts_count = 0;
foreach ($modules['forum'] as $forum) {
$forum_users = $course_users[$forum->course];
for ($i = 0; $i < $this->get('discussions_per_forum'); $i++) {
$mform = new fake_form();
require_once($CFG->dirroot.'/mod/forum/lib.php');
$discussion = new stdClass();
$discussion->course = $forum->course;
$discussion->forum = $forum->id;
$discussion->name = 'Test discussion';
$discussion->intro = 'This is just a test forum discussion';
$discussion->assessed = 0;
$discussion->messageformat = 1;
$discussion->messagetrust = 0;
$discussion->mailnow = false;
$discussion->groupid = -1;
$discussion->attachments = null;
$discussion->itemid = 752157083;
$message = '';
$super_global_user = clone($USER);
$user_id = $forum_users[array_rand($forum_users)];
$USER = $DB->get_record('user', array('id' => $user_id));
if ($discussion_id = forum_add_discussion($discussion, $mform, $message)) {
$discussion = $DB->get_record('forum_discussions', array('id' => $discussion_id));
$discussions_count++;
// Add posts to this discussion
$post_ids = array($discussion->firstpost);
for ($j = 0; $j < $this->get('posts_per_discussion'); $j++) {
$global_user = clone($USER);
$user_id = $forum_users[array_rand($forum_users)];
$USER = $DB->get_record('user', array('id' => $user_id));
$post = new stdClass();
$post->discussion = $discussion_id;
$post->subject = 'Re: test discussion';
$post->message = '<p>Nothing much to say, since this is just a test...</p>';
$post->format = 1;
$post->attachments = null;
$post->itemid = 752157083;
$post->parent = $post_ids[array_rand($post_ids)];
if ($post_ids[] = forum_add_new_post($post, $mform, $message)) {
$posts_count++;
}
$USER = $global_user;
}
}
$USER = $super_global_user;
if ($forum->type == 'single') {
break;
}
}
}
if ($discussions_count > 0 && !$this->get('quiet')) {
echo "$discussions_count forum discussions have been generated.{$this->eolchar}";
}
if ($posts_count > 0 && !$this->get('quiet')) {
echo "$posts_count forum posts have been generated.{$this->eolchar}";
}
return true;
}
return null;
}
public function generate_grades($course_users, $courses, $modules) {
global $CFG, $DB, $USER;
/**
* ASSIGNMENT GRADES GENERATION
*/
if ($this->get('assignment_grades') && isset($modules['assignment'])) {
$grades_count = 0;
foreach ($course_users as $courseid => $userid_array) {
foreach ($userid_array as $userid) {
foreach ($modules['assignment'] as $assignment) {
if (in_array($assignment->course, $courses)) {
$maxgrade = $assignment->grade;
$random_grade = rand(0, $maxgrade);
$grade = new stdClass();
$grade->assignment = $assignment->id;
$grade->userid = $userid;
$grade->grade = $random_grade;
$grade->rawgrade = $random_grade;
$grade->teacher = $USER->id;
$grade->submissioncomment = 'comment';
$DB->insert_record('assignment_submissions', $grade);
grade_update('mod/assignment', $assignment->course, 'mod', 'assignment', $assignment->id, 0, $grade);
$this->verbose("A grade ($random_grade) has been given to user $userid "
. "for assignment $assignment->id");
$grades_count++;
}
}
}
}
if ($grades_count > 0) {
$this->verbose("$grades_count assignment grades have been generated.{$this->eolchar}");
}
}
/**
* QUIZ GRADES GENERATION
*/
if ($this->get('quiz_grades') && isset($modules['quiz'])) {
$grades_count = 0;
foreach ($course_users as $userid => $courses) {
foreach ($modules['quiz'] as $quiz) {
if (in_array($quiz->course, $courses)) {
$maxgrade = $quiz->grade;
$random_grade = rand(0, $maxgrade);
$grade = new stdClass();
$grade->quiz = $quiz->id;
$grade->userid = $userid;
$grade->grade = $random_grade;
$grade->rawgrade = $random_grade;
$DB->insert_record('quiz_grades', $grade);
grade_update('mod/quiz', $courseid, 'mod', 'quiz', $quiz->id, 0, $grade);
$this->verbose("A grade ($random_grade) has been given to user $userid for quiz $quiz->id");
$grades_count++;
}
}
}
if ($grades_count > 0 && !$this->get('quiet')) {
echo "$grades_count quiz grades have been generated.{$this->eolchar}";
}
}
return null;
}
public function generate_module_content($course_users, $courses, $modules) {
global $USER, $DB, $CFG;
$result = null;
$entries_count = 0;
if ($this->get('entries_per_glossary') && !empty($modules['glossary'])) {
foreach ($modules['glossary'] as $glossary) {
for ($i = 0; $i < $this->get('entries_per_glossary'); $i++) {
$entry = new stdClass();
$entry->glossaryid = $glossary->id;
$entry->userid = $USER->id;
$entry->concept = "Test concept";
$entry->definition = "A test concept is nothing to write home about: just a test concept.";
$entry->format = 1;
$entry->timecreated = time();
$entry->timemodified = time();
$entry->teacherentry = 0;
$entry->approved = 1;
$DB->insert_record('glossary_entries', $entry);
$entries_count++;
}
}
if ($entries_count > 0 && !$this->get('quiet')) {
echo "$entries_count glossary definitions have been generated.{$this->eolchar}";
}
$result = true;
}
$fields_count = 0;
if (!empty($modules['data']) && $this->get('fields_per_database') && $this->get('database_records_per_student')) {
$database_field_types = array('checkbox',
'date',
'file',
'latlong',
'menu',
'multimenu',
'number',
'picture',
'radiobutton',
'text',
'textarea',
'url');
$fields = array();
foreach ($modules['data'] as $data) {
for ($i = 0; $i < $this->get('fields_per_database'); $i++) {
$type = $database_field_types[array_rand($database_field_types)];
require_once($CFG->dirroot.'/mod/data/field/'.$type.'/field.class.php');
$newfield = 'data_field_'.$type;
$cm = get_coursemodule_from_instance('data', $data->id);
$newfield = new $newfield(0, $data, $cm);
$fields[$data->id][] = $newfield;
$newfield->insert_field();
}
// Generate fields for each database (same fields for all, no arguing)
for ($i = 0; $i < $this->get('fields_per_database'); $i++) {
}
// Generate database records for each student, if needed
for ($i = 0; $i < $this->get('database_records_per_student'); $i++) {
}
}
if ($fields_count > 0 && !$this->get('quiet')) {
$datacount = count($modules['data']);
echo "$fields_count database fields have been generated for each of the "
. "$datacount generated databases.{$this->eolchar}";
}
$result = true;
}
$messages_count = 0;
if (!empty($modules['chat']) && $this->get('messages_per_chat')) {
// Insert all users into chat_users table, then a message from each user
foreach ($modules['chat'] as $chat) {
foreach ($course_users as $courseid => $users_array) {
foreach ($users_array as $userid) {
if ($messages_count < $this->get('messages_per_chat')) {
$chat_user = new stdClass();
$chat_user->chatid = $chat->id;
$chat_user->userid = $userid;
$chat_user->course = $courseid;
$DB->insert_record('chat_users', $chat_user);
$chat_message = new stdClass();
$chat_message->chatid = $chat->id;
$chat_message->userid = $userid;
$chat_message->message = "Hi, everyone!";
$DB->insert_record('chat_messages', $chat_message);
$messages_count++;
}
}
}
}
if ($messages_count > 0 && !$this->get('quiet')) {
$datacount = count($modules['chat']);
echo "$messages_count messages have been generated for each of the "
. "$datacount generated chats.{$this->eolchar}";
}
$result = true;
}
return $result;
}
/**
* If verbose is switched on, prints a string terminated by the global eolchar string.
* @param string $string The string to STDOUT
*/