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407 lines
15 KiB
407 lines
15 KiB
<?php // $Id: question_pool.php 20451 2009-05-10 12:02:22Z ivantcholakov $
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/*
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==============================================================================
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Dokeos - elearning and course management software
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Copyright (c) 2004-2009 Dokeos SPRL
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Copyright (c) 2003 Ghent University (UGent)
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Copyright (c) 2001 Universite catholique de Louvain (UCL)
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Copyright (c) various contributors
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For a full list of contributors, see "credits.txt".
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The full license can be read in "license.txt".
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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See the GNU General Public License for more details.
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Contact address: Dokeos, rue du Corbeau, 108, B-1030 Brussels, Belgium
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Mail: info@dokeos.com
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==============================================================================
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*/
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/**
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* Question Pool
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* This script allows administrators to manage questions and add them into their exercises.
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* One question can be in several exercises
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* @package dokeos.exercise
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* @author Olivier Brouckaert
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* @version $Id: question_pool.php 20451 2009-05-10 12:02:22Z ivantcholakov $
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*/
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// name of the language file that needs to be included
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$language_file='exercice';
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include('exercise.class.php');
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include('question.class.php');
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include('answer.class.php');
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include('../inc/global.inc.php');
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$this_section=SECTION_COURSES;
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$is_allowedToEdit=api_is_allowed_to_edit();
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$TBL_EXERCICE_QUESTION = Database::get_course_table(TABLE_QUIZ_TEST_QUESTION);
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$TBL_EXERCICES = Database::get_course_table(TABLE_QUIZ_TEST);
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$TBL_QUESTIONS = Database::get_course_table(TABLE_QUIZ_QUESTION);
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$TBL_REPONSES = Database::get_course_table(TABLE_QUIZ_ANSWER);
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if ( empty ( $delete ) ) {
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$delete = intval($_GET['delete']);
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}
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if ( empty ( $recup ) ) {
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$recup = intval($_GET['recup']);
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}
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if ( empty ( $fromExercise ) ) {
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$fromExercise = intval($_GET['fromExercise']);
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}
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if(isset($_GET['exerciseId'])){
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$exerciseId = intval($_GET['exerciseId']);
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}
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if(isset($_GET['exerciseLevel'])){
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$exerciseLevel = intval($_GET['exerciseLevel']);
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}
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if(!empty($_GET['page'])){
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$page = intval($_GET['page']);
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}
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//only that type of question
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if(!empty($_GET['type'])){
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$type = intval($_GET['type']);
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}
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// maximum number of questions on a same page
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$limitQuestPage=50;
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// document path
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$documentPath=api_get_path(SYS_COURSE_PATH).$_course['path'].'/document';
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// picture path
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$picturePath=$documentPath.'/images';
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if(!($objExcercise instanceOf Exercise) && !empty($fromExercise))
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{
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$objExercise = new Exercise();
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$objExercise->read($fromExercise);
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}
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if(!($objExcercise instanceOf Exercise) && !empty($exerciseId))
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{
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$objExercise = new Exercise();
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$objExercise->read($exerciseId);
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}
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if($is_allowedToEdit)
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{
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// deletes a question from the data base and all exercises
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if($delete)
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{
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// construction of the Question object
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// if the question exists
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if($objQuestionTmp = Question::read($delete))
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{
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// deletes the question from all exercises
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$objQuestionTmp->delete();
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}
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// destruction of the Question object
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unset($objQuestionTmp);
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}
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// gets an existing question and copies it into a new exercise
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elseif($recup && $fromExercise)
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{
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// if the question exists
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if($objQuestionTmp = Question :: read($recup))
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{
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// adds the exercise ID represented by $fromExercise into the list of exercises for the current question
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$objQuestionTmp->addToList($fromExercise);
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}
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// destruction of the Question object
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unset($objQuestionTmp);
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if(!$objExcercise instanceOf Exercise)
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{
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$objExercise = new Exercise();
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$objExercise->read($fromExercise);
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}
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// adds the question ID represented by $recup into the list of questions for the current exercise
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$objExercise->addToList($recup);
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api_session_register('objExercise');
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header("Location: admin.php?exerciseId=$fromExercise");
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exit();
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}
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}
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if (isset($_SESSION['gradebook'])){
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$gradebook= $_SESSION['gradebook'];
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}
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if (!empty($gradebook) && $gradebook=='view') {
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$interbreadcrumb[]= array (
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'url' => '../gradebook/'.$_SESSION['gradebook_dest'],
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'name' => get_lang('Gradebook')
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);
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}
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$nameTools=get_lang('QuestionPool');
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$interbreadcrumb[]=array("url" => "exercice.php","name" => get_lang('Exercices'));
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// if admin of course
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if($is_allowedToEdit)
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{
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Display::display_header($nameTools,"Exercise");
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?>
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<h3><?php echo $nameTools; ?></h3>
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<div class="actions">
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<?php
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if(!empty($fromExercise)) {
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echo '<a href="admin.php?',api_get_cidreq(),'&exerciseId=',$fromExercise,'">'.Display::return_icon('quiz.gif', get_lang('GoBackToEx')),get_lang('GoBackToEx'),'</a>';
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} else {
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echo '<a href="admin.php?',api_get_cidreq(),'&newQuestion=yes">'.Display::return_icon('new_test.gif'),get_lang('NewQu'),'</a>';
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}
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if (isset($type)) {
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$url = api_get_self().'?type=1';
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} else {
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$url = api_get_self();
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}
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?>
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<form method="get" action="<?php echo $url; ?>" style="display:inline;">
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<?php
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if (isset($type)) {
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echo '<input type="hidden" name="type" value="1">';
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}
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?>
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<input type="hidden" name="fromExercise" value="<?php echo $fromExercise; ?>">
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<?php echo get_lang('Filter'); ?> :
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<select name="exerciseId">
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<option value="0">-- <?php echo get_lang('AllExercises'); ?> --</option>
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<option value="-1" <?php if($exerciseId == -1) echo 'selected="selected"'; ?>>-- <?php echo get_lang('OrphanQuestions'); ?> --</option>
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<?php
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$sql="SELECT id,title FROM $TBL_EXERCICES WHERE id<>'".Database::escape_string($fromExercise)."' AND active<>'-1' ORDER BY id";
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$result=api_sql_query($sql,__FILE__,__LINE__);
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// shows a list-box allowing to filter questions
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while($row=Database::fetch_array($result)) {
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?>
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<option value="<?php echo $row['id']; ?>" <?php if($exerciseId == $row['id']) echo 'selected="selected"'; ?>><?php echo $row['title']; ?></option>
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<?php
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}
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?>
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</select>
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<?php
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echo get_lang('Difficulty');
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echo ' : <select name="exerciseLevel">';
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//echo '<option value="-1">-- '.get_lang('AllExercises').' --</option>';
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//level difficulty only from 1 to 5
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if (!isset($exerciseLevel)) $exerciseLevel = -1;
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for ($level = -1; $level <=5; $level++) {
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$selected ='';
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if ($level!=0) {
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if ($exerciseLevel == $level)
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$selected = ' selected="selected" ';
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if ($level==-1) {
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echo '<option value="'.$level.'" '.$selected.'>-- '.get_lang('AllExercises').' --</option>';
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} else {
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echo '<option value="'.$level.'" '.$selected.'>'.$level.'</option>';
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}
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}
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}
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echo '</select> ';
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?>
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<button class="save" type="submit" name="name" value="<?php echo get_lang('Ok') ?>"><?php echo get_lang('Ok') ?></button>
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</form>
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</div>
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<table class="data_table">
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<?php
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$from=$page*$limitQuestPage;
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// if we have selected an exercise in the list-box 'Filter'
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if ($exerciseId > 0) {
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//$sql="SELECT id,question,type FROM $TBL_EXERCICE_QUESTION,$TBL_QUESTIONS WHERE question_id=id AND exercice_id='".Database::escape_string($exerciseId)."' ORDER BY question_order LIMIT $from, ".($limitQuestPage + 1);
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$where = '';
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if (isset($type) && $type==1) {
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$where = ' type = 1 AND ';
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}
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if (isset($exerciseLevel) && $exerciseLevel != -1) {
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$where .= ' level='.$exerciseLevel.' AND ';
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}
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$sql="SELECT id,question,type,level
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FROM $TBL_EXERCICE_QUESTION,$TBL_QUESTIONS
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WHERE $where question_id=id AND exercice_id='".Database::escape_string($exerciseId)."'
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ORDER BY question_order";
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} elseif($exerciseId == -1) {
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// if we have selected the option 'Orphan questions' in the list-box 'Filter'
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// 1. Old logic: When a test is deleted, the correspondent records in 'quiz' and 'quiz_rel_question' tables are deleted.
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//$sql='SELECT id, question, type, exercice_id FROM '.$TBL_QUESTIONS.' as questions LEFT JOIN '.$TBL_EXERCICE_QUESTION.' as quizz_questions ON questions.id=quizz_questions.question_id WHERE exercice_id IS NULL LIMIT $from, '.($limitQuestPage + 1);
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// 2. New logic: When a test is deleted, the field 'active' takes value -1 (it is in the correspondent record in 'quiz' table).
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//$sql='SELECT questions.id, questions.question, questions.type, quizz_questions.exercice_id FROM '.$TBL_QUESTIONS.
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// ' as questions LEFT JOIN '.$TBL_EXERCICE_QUESTION.' as quizz_questions ON questions.id=quizz_questions.question_id LEFT JOIN '.$TBL_EXERCICES.
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// ' as exercices ON exercice_id=exercices.id WHERE exercices.active = -1 LIMIT $from, '.($limitQuestPage + 1);
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// 3. This is more safe to changes, it is a mix between old and new logic.
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/*$sql='SELECT questions.id, questions.question, questions.type, quizz_questions.exercice_id FROM '.$TBL_QUESTIONS.
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' as questions LEFT JOIN '.$TBL_EXERCICE_QUESTION.' as quizz_questions ON questions.id=quizz_questions.question_id LEFT JOIN '.$TBL_EXERCICES.
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' as exercices ON exercice_id=exercices.id WHERE quizz_questions.exercice_id IS NULL OR exercices.active = -1 LIMIT '.$from.', '.($limitQuestPage + 1);
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*/
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/* 4. Query changed because of the Level feature implemented
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$sql='SELECT id, question, type, exercice_id,level FROM '.$TBL_QUESTIONS.' as questions LEFT JOIN '.$TBL_EXERCICE_QUESTION.' as quizz_questions
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ON questions.id=quizz_questions.question_id AND exercice_id IS NULL '.
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(!is_null($exerciseLevel) && $exerciseLevel >= 0 ? 'WHERE level=\''.$exerciseLevel.'\' ' : '');
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*/
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// 5. this is the combination of the 3 and 4 query because of the level feature implementation
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// we filter the type of question, because in the DirectFeedback we can only add questions with type=1 = UNIQUE_ANSWER
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$type_where= '';
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if (isset($type) && $type==1) {
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$type_where = ' AND questions.type = 1 ';
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}
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$level_where = '';
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if (isset($exerciseLevel) && $exerciseLevel!= -1 ) {
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$level_where = ' level='.$exerciseLevel.' AND ';
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}
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$sql='SELECT questions.id, questions.question, questions.type, quizz_questions.exercice_id , level
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FROM '.$TBL_QUESTIONS.' as questions LEFT JOIN '.$TBL_EXERCICE_QUESTION.' as quizz_questions
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ON questions.id=quizz_questions.question_id LEFT JOIN '.$TBL_EXERCICES.' as exercices
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ON exercice_id=exercices.id
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WHERE '.$level_where.' (quizz_questions.exercice_id IS NULL OR exercices.active = -1 ) '.$type_where.'
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LIMIT '.$from.', '.($limitQuestPage + 1);
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} else {
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// if we have not selected any option in the list-box 'Filter'
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//$sql="SELECT id,question,type FROM $TBL_QUESTIONS LIMIT $from, ".($limitQuestPage + 1);
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$where = '';
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if (isset($type)&& $type==1){
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$where = ' WHERE type = 1 ';
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}
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if (isset($exerciseLevel) && $exerciseLevel != -1) {
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if (strlen($where)>0)
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$where .= ' AND level='.$exerciseLevel.' ';
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else
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$where = ' WHERE level='.$exerciseLevel.' ';
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}
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$sql="SELECT id,question,type,level FROM $TBL_QUESTIONS $where ";
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// forces the value to 0
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//echo $sql;
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$exerciseId=0;
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}
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$result=api_sql_query($sql,__FILE__,__LINE__);
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$nbrQuestions=Database::num_rows($result);
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echo '<tr>',
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'<td colspan="',($fromExercise?3:3),'">',
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'<table border="0" cellpadding="0" cellspacing="0" width="100%">',
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'<tr>',
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'<td>';
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echo '</td>',
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'<td align="right">';
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if(!empty($page)) {
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echo '<a href="',api_get_self(),'?',api_get_cidreq(),'&exerciseId=',$exerciseId,'&fromExercise=',$fromExercise,'&page=',($page-1),'"><< ',get_lang('PreviousPage'),'</a> |';
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} elseif($nbrQuestions > $limitQuestPage) {
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echo '<< ',get_lang('PreviousPage'),' |';
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}
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if($nbrQuestions > $limitQuestPage) {
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echo '<a href="',api_get_self(),'?',api_get_cidreq(),'&exerciseId=',$exerciseId,'&fromExercise=',$fromExercise,'&page=',($page+1),'">',get_lang('NextPage'),' >></a>';
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} elseif($page) {
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echo ' ',get_lang('NextPage'),' >>';
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}
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echo '</td>
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</tr>
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</table>
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</td>
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</tr>
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<tr bgcolor="#e6e6e6">';
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if(!empty($fromExercise)) {
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echo '<th>',get_lang('Question'),'</th>',
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'<th>',get_lang('Level'),'</th>',
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'<th>',get_lang('Reuse'),'</th>';
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} else {
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echo '<td width="60%" align="center">',get_lang('Question'),'</td>',
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'<td width="20%" align="center">',get_lang('Modify'),'</td>',
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'<td width="20%" align="center">',get_lang('Delete'),'</td>';
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}
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echo '</tr>';
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$i=1;
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echo '<pre>';
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echo '</pre>';
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while ($row = Database::fetch_array($result)) {
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// if we come from the exercise administration to get a question,
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// don't show the questions already used by that exercise
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/*if (!$fromExercise) {echo '1'; }
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if (!isset($objExercise)){echo '2';}
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if (!($objExercise instanceOf Exercise)){echo '3';}
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if (!$objExercise->isInList($row['id'])) {echo '4';}
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*/
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// original recipe -
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//if (!$fromExercise || !isset($objExercise) || !($objExercise instanceOf Exercise) || (!$objExercise->isInList($row['id'])))
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if (!$fromExercise || !isset($objExercise) || !($objExercise instanceOf Exercise) || (is_array($objExercise->questionList)) ) {
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echo '<tr ',($i%2==0?'class="row_odd"':'class="row_even"'),'>';
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echo ' <td><a href="admin.php?',api_get_cidreq(),'&editQuestion=',$row['id'],'&fromExercise=',$fromExercise,'">',$row['question'],'</a></td>';
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echo ' <td align="center" >';
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if (empty($fromExercise)) {
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echo '<a href="admin.php?'.api_get_cidreq().'&editQuestion=',$row['id'],'"><img src="../img/edit.gif" border="0" alt="',get_lang('Modify'),'"></a>',
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'</td>',
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'<td align="center">',
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'<a href="',api_get_self(),'?',api_get_cidreq(),'&exerciseId=',$exerciseId,'&delete=',$row['id'],'" onclick="javascript:if(!confirm(\'',addslashes(api_htmlentities(get_lang('ConfirmYourChoice'),ENT_QUOTES,$charset)),'\')) return false;"><img src="../img/delete.gif" border="0" alt="',get_lang('Delete'),'"></a>';
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//'<a href="',api_get_self(),'?',api_get_cidreq(),'&exerciseId=',$exerciseId,'&delete=',$row['id'],'" onclick="javascript:if(!confirm(\'',addslashes(api_htmlentities(get_lang('ConfirmYourChoice'),ENT_QUOTES,$charset)),'\')) return false;"><img src="../img/delete.gif" border="0" alt="',get_lang('Delete'),'"></a>';
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} else {
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//echo $row['level'],'</td>',
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// '<td><a href="',api_get_self(),'?',api_get_cidreq(),'&recup=',$row['id'],'&fromExercise=',$fromExercise,'"><img src="../img/view_more_stats.gif" border="0" alt="',get_lang('Reuse'),'"></a>';
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echo $row['level'],'</td>',
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'<td align="center" ><a href="',api_get_self(),'?',api_get_cidreq(),'&recup=',$row['id'],'&fromExercise=',$fromExercise,'">' .
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'<img src="../img/view_more_stats.gif" border="0" alt="',get_lang('Reuse'),'"></a>';
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}
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echo '</td>';
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echo '</tr>';
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// skips the last question, that is only used to know if we have or not to create a link "Next page"
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if($i == $limitQuestPage) {
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break;
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}
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$i++;
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}
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}
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if (!$nbrQuestions) {
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echo '<tr>',
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'<td colspan="',($fromExercise?3:3),'">',get_lang('NoQuestion'),'</td>',
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'</tr>';
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}
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echo '</table>';
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Display::display_footer();
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} else {
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// if not admin of course
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api_not_allowed(true);
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}
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?>
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