Chamilo is a learning management system focused on ease of use and accessibility
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chamilo-lms/main/inc/ajax/exercise.ajax.php

416 lines
17 KiB

<?php
/* For licensing terms, see /license.txt */
/**
* Responses to AJAX calls
*/
require_once '../../exercice/exercise.class.php';
require_once '../../exercice/question.class.php';
require_once '../../exercice/answer.class.php';
require_once '../global.inc.php';
require_once '../../exercice/exercise.lib.php';
api_protect_course_script(true);
$action = $_REQUEST['a'];
$course_id = api_get_course_int_id();
if ($debug) error_log("$action ajax call");
$session_id = isset($_REQUEST['session_id']) ? intval($_REQUEST['session_id']) : api_get_session_id();
$course_code = isset($_REQUEST['cidReq']) ? $_REQUEST['cidReq'] : api_get_course_id();
switch ($action) {
case 'get_live_stats':
if (!api_is_allowed_to_edit(null, true)) {
break;
}
// 1. Setting variables needed by jqgrid
$action = $_GET['a'];
$exercise_id = intval($_GET['exercise_id']);
$page = intval($_REQUEST['page']); //page
$limit = intval($_REQUEST['rows']); //quantity of rows
$sidx = $_REQUEST['sidx']; //index to filter
$sord = $_REQUEST['sord']; //asc or desc
if (!in_array($sord, array('asc','desc'))) {
$sord = 'desc';
}
// get index row - i.e. user click to sort $sord = $_GET['sord'];
// get the direction
if (!$sidx) {
$sidx = 1;
}
$track_exercise = Database::get_statistic_table(TABLE_STATISTIC_TRACK_E_EXERCICES);
$user_table = Database::get_main_table(TABLE_MAIN_USER);
$track_attempt = Database::get_statistic_table(TABLE_STATISTIC_TRACK_E_ATTEMPT);
$minutes = intval($_REQUEST['minutes']);
$now = time() - 60*$minutes; //1 hour
$now = api_get_utc_datetime($now);
$where_condition = " orig_lp_id = 0 AND exe_exo_id = $exercise_id AND start_date > '$now' ";
$sql = "SELECT COUNT(DISTINCT exe_id) FROM $track_exercise WHERE $where_condition ";
$result = Database::query($sql);
$count = Database::fetch_row($result);
$count = $count[0];
//3. Calculating first, end, etc
$total_pages = 0;
if ($count > 0) {
if (!empty($limit)) {
$total_pages = ceil($count/$limit);
}
}
if ($page > $total_pages) {
$page = $total_pages;
}
$start = $limit * $page - $limit;
if ($start < 0 ) {
$start = 0;
}
$sql = "SELECT exe_id,
exe_user_id,
firstname,
lastname,
aa.status,
start_date,
exe_result,
exe_weighting,
exe_result/exe_weighting as score,
exe_duration,
questions_to_check,
orig_lp_id
FROM $user_table u
INNER JOIN (
SELECT t.exe_id, t.exe_user_id, status,
start_date, exe_result, exe_weighting, exe_result/exe_weighting as score, exe_duration, questions_to_check, orig_lp_id
FROM $track_exercise t LEFT JOIN $track_attempt a ON (a.exe_id = t.exe_id AND t.exe_user_id = a.user_id )
WHERE t.status = 'incomplete' AND
$where_condition
GROUP BY exe_user_id
) as aa
ON aa.exe_user_id = user_id
ORDER BY $sidx $sord LIMIT $start, $limit";
$result = Database::query($sql);
$results = array();
while ($row = Database::fetch_array($result, 'ASSOC')){
$results[] = $row;
}
$oExe = new exercise();
$oExe->read($exercise_id);
$response = new stdClass();
$response->page = $page;
$response->total = $total_pages;
$response->records = $count;
$i=0;
if (!empty($results)) {
foreach($results as $row) {
$sql = "SELECT SUM(count_question_id) as count_question_id FROM (
SELECT 1 as count_question_id FROM $track_attempt a
WHERE user_id = {$row['exe_user_id']} and exe_id = {$row['exe_id']}
GROUP by question_id
) as count_table";
$result_count = Database::query($sql);
$count_questions = Database::fetch_array($result_count,'ASSOC');
$count_questions = $count_questions['count_question_id'];
$row['count_questions'] = $count_questions;
$response->rows[$i]['id'] = $row['exe_id'];
$remaining = strtotime($row['start_date'])+($oExe->expired_time*60) - strtotime(api_get_utc_datetime(time()));
$h = floor($remaining/3600);
$m = floor(($remaining - ($h*3600))/60);
$s = ($remaining - ($h*3600) - ($m*60));
$array = array( $row['firstname'],
$row['lastname'],
api_format_date($row['start_date'], DATE_TIME_FORMAT_LONG).' ['.($h>0?$h.':':'').sprintf("%02d",$m).':'.sprintf("%02d",$s).']',
$row['count_questions'],
round($row['score']*100).'%'
);
$response->rows[$i]['cell'] = $array;
$i++;
}
}
echo json_encode($response);
break;
case 'update_exercise_list_order':
if (api_is_allowed_to_edit(null, true)) {
$new_list = $_REQUEST['exercise_list'];
$table = Database::get_course_table(TABLE_QUIZ_ORDER);
$counter = 1;
//Drop all
Database::query("DELETE FROM $table WHERE session_id = $session_id AND c_id = $course_id");
//Insert all
foreach ($new_list as $new_order_id) {
Database::insert($table, array('exercise_order' => $counter, 'session_id' => $session_id, 'exercise_id' => intval($new_order_id), 'c_id' => $course_id));
$counter++;
}
Display::display_confirmation_message(get_lang('Saved'));
}
break;
case 'update_question_order':
$course_info = api_get_course_info($course_code);
$course_id = $course_info['real_id'];
$exercise_id = isset($_REQUEST['exercise_id']) ? $_REQUEST['exercise_id'] : null;
if (empty($exercise_id)) {
return Display::display_error_message(get_lang('Error'));
}
if (api_is_allowed_to_edit(null, true)) {
$new_question_list = $_POST['question_id_list'];
$TBL_QUESTIONS = Database::get_course_table(TABLE_QUIZ_TEST_QUESTION);
$counter = 1;
foreach ($new_question_list as $new_order_id) {
Database::update($TBL_QUESTIONS, array('question_order' => $counter), array('question_id = ? AND c_id = ? AND exercice_id = ? '=>array(intval($new_order_id), $course_id, $exercise_id)));
$counter++;
}
Display::display_confirmation_message(get_lang('Saved'));
}
break;
case 'add_question_to_reminder':
$objExercise = $_SESSION['objExercise'];
if (empty($objExercise)) {
echo 0;
exit;
} else {
$objExercise->edit_question_to_remind($_REQUEST['exe_id'], $_REQUEST['question_id'], $_REQUEST['action']);
}
break;
case 'save_exercise_by_now':
$course_info = api_get_course_info($course_code);
$course_id = $course_info['real_id'];
// Use have permissions?
if (api_is_allowed_to_session_edit()) {
//"all" or "simple" strings means that there's one or all questions exercise type
$type = isset($_REQUEST['type']) ? $_REQUEST['type'] : null;
//Questions choices
$choice = isset($_REQUEST['choice']) ? $_REQUEST['choice'] : null;
//Hotspot coordinates from all questions
$hot_spot_coordinates = isset($_REQUEST['hotspot']) ? $_REQUEST['hotspot'] : null;
//There is a reminder?
$remind_list = isset($_REQUEST['remind_list']) && !empty($_REQUEST['remind_list'])? array_keys($_REQUEST['remind_list']) : null;
//Needed in manage_answer
$learnpath_id = isset($_REQUEST['learnpath_id']) ? intval($_REQUEST['learnpath_id']) : 0;
$learnpath_item_id = isset($_REQUEST['learnpath_item_id']) ? intval($_REQUEST['learnpath_item_id']) : 0;
//Attempt id
$exe_id = $_REQUEST['exe_id'];
if ($debug) {
error_log("exe_id = $exe_id ");
error_log("type = $type ");
error_log("choice = ".print_r($choice, 1)." ");
error_log("hot_spot_coordinates = ".print_r($hot_spot_coordinates, 1));
error_log("remind_list = ".print_r($remind_list, 1));
}
// Exercise information.
$objExercise = isset($_SESSION['objExercise']) ? $_SESSION['objExercise'] : null;
// Question info.
$question_id = intval($_REQUEST['question_id']);
$question_list = $_SESSION['questionList'];
// If exercise or question is not set then exit.
if (empty($question_list) || empty($objExercise)) {
echo 'error';
exit;
}
//Getting information of the current exercise
$exercise_stat_info = $objExercise->get_stat_track_exercise_info_by_exe_id($exe_id);
$exercise_id = $exercise_stat_info['exe_exo_id'];
$attempt_list = array();
//First time here we create an attempt (getting the exe_id)
if (empty($exercise_stat_info)) {
} else {
//We know the user we get the exe_id
$exe_id = $exercise_stat_info['exe_id'];
$total_score = $exercise_stat_info['exe_result'];
//Getting the list of attempts
$attempt_list = get_all_exercise_event_by_exe_id($exe_id);
}
//Updating Reminder algorythm
if ($objExercise->type == ONE_PER_PAGE) {
$bd_reminder_list = explode(',', $exercise_stat_info['questions_to_check']);
if (empty($remind_list)) {
$remind_list = $bd_reminder_list;
$new_list = array();
foreach($bd_reminder_list as $item) {
if ($item != $question_id) {
$new_list[] = $item;
}
}
$remind_list = $new_list;
} else {
if (isset($remind_list[0])) {
if (!in_array($remind_list[0], $bd_reminder_list)) {
array_push($bd_reminder_list, $remind_list[0]);
}
$remind_list = $bd_reminder_list;
}
}
}
//No exe id? Can't save answer.
if (empty($exe_id)) {
//Fires an error
echo 'error';
exit;
} else {
$_SESSION['exe_id'] = $exe_id;
}
// Getting the total weight if the request is simple
$total_weight = 0;
if ($type == 'simple') {
foreach ($question_list as $my_question_id) {
$objQuestionTmp = Question::read($my_question_id, $course_id);
$total_weight += $objQuestionTmp->selectWeighting();
}
}
unset($objQuestionTmp);
// Looping the question list
foreach ($question_list as $my_question_id) {
if ($debug) error_log("Saving question_id = $my_question_id ");
if ($type == 'simple' && $question_id != $my_question_id) {
continue;
}
$my_choice = $choice[$my_question_id];
if ($debug) error_log("my_choice = ".print_r($my_choice, 1)."");
// creates a temporary Question object
$objQuestionTmp = Question::read($my_question_id, $course_id);
//Getting free choice data
if ($objQuestionTmp->type == FREE_ANSWER && $type == 'all') {
$my_choice = isset($_REQUEST['free_choice'][$my_question_id]) && !empty($_REQUEST['free_choice'][$my_question_id])? $_REQUEST['free_choice'][$my_question_id]: null;
}
if ($type == 'all') {
$total_weight += $objQuestionTmp->selectWeighting();
}
//this variable commes from exercise_submit_modal.php
$hotspot_delineation_result = null;
if (isset($_SESSION['hotspot_delineation_result']) && isset($_SESSION['hotspot_delineation_result'][$objExercise->selectId()])) {
$hotspot_delineation_result = $_SESSION['hotspot_delineation_result'][$objExercise->selectId()][$my_question_id];
}
if ($type == 'simple') {
//Getting old attempt in order to decrees the total score
$old_result = $objExercise->manage_answer($exe_id, $my_question_id, null, 'exercise_show', array(), false, true, false, $objExercise->selectPropagateNeg());
//Removing old score
$total_score = $total_score - $old_result['score'];
}
// Deleting old attempt
if (isset($attempt_list) && !empty($attempt_list[$my_question_id])) {
if ($debug) error_log("delete_attempt exe_id : $exe_id, my_question_id: $my_question_id");
delete_attempt($exe_id, api_get_user_id() , $course_code, $session_id, $my_question_id);
if ($objQuestionTmp->type == HOT_SPOT) {
delete_attempt_hotspot($exe_id, api_get_user_id() , $course_code, $my_question_id);
}
if (isset($attempt_list[$my_question_id]) && isset($attempt_list[$my_question_id]['marks'])) {
$total_score -= $attempt_list[$my_question_id]['marks'];
}
}
// We're inside *one* question. Go through each possible answer for this question
$result = $objExercise->manage_answer($exe_id, $my_question_id, $my_choice, 'exercise_result', $hot_spot_coordinates, true, false, false, $objExercise->selectPropagateNeg(), $hotspot_delineation_result, true);
//Adding the new score
$total_score += $result['score'];
if ($debug) error_log("total_score: $total_score ");
if ($debug) error_log("total_weight: $total_weight ");
$duration = 0;
$now = time();
if ($type == 'all') {
$exercise_stat_info = $objExercise->get_stat_track_exercise_info_by_exe_id($exe_id);
}
$key = get_time_control_key($exercise_id, $exercise_stat_info['orig_lp_id'], $exercise_stat_info['orig_lp_item_id']);
if (isset($_SESSION['duration_time'][$key]) && !empty($_SESSION['duration_time'][$key])) {
$duration = $now - $_SESSION['duration_time'][$key];
if (!empty($exercise_stat_info['exe_duration'])) {
$duration += $exercise_stat_info['exe_duration'];
}
$duration = intval($duration);
} else {
if (!empty($exercise_stat_info['exe_duration'])) {
$duration = $exercise_stat_info['exe_duration'];
}
}
$_SESSION['duration_time'][$key] = time();
update_event_exercice( $exe_id,
$objExercise->selectId(),
$total_score,
$total_weight,
$session_id,
$exercise_stat_info['orig_lp_id'],
$exercise_stat_info['orig_lp_item_id'],
$exercise_stat_info['orig_lp_item_view_id'],
$duration,
$question_list,
'incomplete',
$remind_list);
// Destruction of the Question object
unset($objQuestionTmp);
if ($debug) error_log(" -- end question -- ");
}
if ($debug) error_log(" ------ end ajax call ------- ");
}
if ($objExercise->type == ONE_PER_PAGE) {
echo 'one_per_page';
exit;
}
echo 'ok';
break;
default:
echo '';
}
exit;