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296 lines
12 KiB
296 lines
12 KiB
<?php
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/* For licensing terms, see /license.txt */
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/**
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* CLASS MultipleAnswer
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*
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* This class allows to instantiate an object of type MULTIPLE_ANSWER
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* (MULTIPLE CHOICE, MULTIPLE ANSWER), extending the class question
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* @author Julio Montoya
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* @package chamilo.exercise
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**/
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/**
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* Code
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*/
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/**
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* Class
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* @package chamilo.exercise
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*/
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class MultipleAnswerTrueFalse extends Question {
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static $typePicture = 'mcmao.gif';
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static $explanationLangVar = 'MultipleAnswerTrueFalse';
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var $options;
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/**
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* Constructor
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*/
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function MultipleAnswerTrueFalse(){
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parent::question();
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$this->type = MULTIPLE_ANSWER_TRUE_FALSE;
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$this->isContent = $this-> getIsContent();
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$this->options = array(1=>get_lang('True'),2 =>get_lang('False'), 3 =>get_lang('DoubtScore'));
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}
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/**
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* function which redifines Question::createAnswersForm
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* @param the formvalidator instance
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* @param the answers number to display
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*/
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function createAnswersForm ($form) {
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$nb_answers = isset($_POST['nb_answers']) ? $_POST['nb_answers'] : 4; // The previous default value was 2. See task #1759.
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$nb_answers += (isset($_POST['lessAnswers']) ? -1 : (isset($_POST['moreAnswers']) ? 1 : 0));
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$course_id = api_get_course_int_id();
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$obj_ex = $_SESSION['objExercise'];
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$renderer = & $form->defaultRenderer();
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$defaults = array();
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$html = '<table class="data_table">
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<tr style="text-align: center;">
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<th>
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'.get_lang('Number').'
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</th>
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<th>
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'.get_lang('True').'
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</th>
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<th>
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'.get_lang('False').'
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</th>
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<th>
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'.get_lang('Answer').'
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</th>';
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// show column comment when feedback is enable
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if ($obj_ex->selectFeedbackType() != EXERCISE_FEEDBACK_TYPE_EXAM ) {
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$html .='<th>'.get_lang('Comment').'</th>';
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}
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$html .= '</tr>';
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$form -> addElement ('label', get_lang('Answers').'<br /> <img src="../img/fill_field.png">', $html);
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$correct = 0;
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$answer = null;
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if (!empty($this -> id)) {
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$answer = new Answer($this -> id);
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$answer->read();
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if (count($answer->nbrAnswers) > 0 && !$form->isSubmitted()) {
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$nb_answers = $answer->nbrAnswers;
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}
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}
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$form -> addElement('hidden', 'nb_answers');
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$boxes_names = array();
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if ($nb_answers < 1) {
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$nb_answers = 1;
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Display::display_normal_message(get_lang('YouHaveToCreateAtLeastOneAnswer'));
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}
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// Can be more options
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$option_data = Question::readQuestionOption($this->id, $course_id);
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for ($i = 1 ; $i <= $nb_answers ; ++$i) {
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$renderer->setElementTemplate('<td><!-- BEGIN error --><span class="form_error">{error}</span><!-- END error --><br/>{element}</td>', 'correct['.$i.']');
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$renderer->setElementTemplate('<td><!-- BEGIN error --><span class="form_error">{error}</span><!-- END error --><br/>{element}</td>', 'counter['.$i.']');
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$renderer->setElementTemplate('<td><!-- BEGIN error --><span class="form_error">{error}</span><!-- END error --><br/>{element}</td>', 'answer['.$i.']');
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$renderer->setElementTemplate('<td><!-- BEGIN error --><span class="form_error">{error}</span><!-- END error --><br/>{element}</td>', 'comment['.$i.']');
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$answer_number=$form->addElement('text', 'counter['.$i.']',null,'value="'.$i.'"');
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$answer_number->freeze();
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if (is_object($answer)) {
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$defaults['answer['.$i.']'] = $answer -> answer[$i];
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$defaults['comment['.$i.']'] = $answer -> comment[$i];
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//$defaults['weighting['.$i.']'] = float_format($answer -> weighting[$i], 1);
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$correct = $answer->correct[$i];
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$defaults['correct['.$i.']'] = $correct;
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$j = 1;
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if (!empty($option_data)) {
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foreach ($option_data as $id=>$data) {
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$form->addElement('radio', 'correct['.$i.']', null, null, $id);
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$j++;
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if ($j == 3) {
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break;
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}
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}
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}
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} else {
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$form->addElement('radio', 'correct['.$i.']', null, null, 1);
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$form->addElement('radio', 'correct['.$i.']', null, null, 2);
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$defaults['answer['.$i.']'] = '';
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$defaults['comment['.$i.']'] = '';
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$defaults['correct['.$i.']'] = '';
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}
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//$form->addElement('select', 'correct['.$i.']',null, $this->options, array('id'=>$i,'onchange'=>'multiple_answer_true_false_onchange(this)'));
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$boxes_names[] = 'correct['.$i.']';
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$form->addElement('html_editor', 'answer['.$i.']',null, 'style="vertical-align:middle"', array('ToolbarSet' => 'TestProposedAnswer', 'Width' => '100%', 'Height' => '100'));
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$form->addRule('answer['.$i.']', get_lang('ThisFieldIsRequired'), 'required');
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// show comment when feedback is enable
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if ($obj_ex->selectFeedbackType() != EXERCISE_FEEDBACK_TYPE_EXAM) {
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$form->addElement('html_editor', 'comment['.$i.']',null, 'style="vertical-align:middle"', array('ToolbarSet' => 'TestProposedAnswer', 'Width' => '100%', 'Height' => '100'));
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}
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$form->addElement ('html', '</tr>');
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}
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$form->addElement('html', '</table>');
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$form->addElement('html', '<br />');
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$form->addElement('html', '<table><tr><td></td><td>'.get_lang('Correct').'</td><td>'.get_lang('Wrong').'</td><td>'.get_lang('DoubtScore').'</td></tr>');
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$renderer->setElementTemplate('<tr><td><span class="form_required">*</span>'.get_lang('Score').' </td><td>{element} <br /><!-- BEGIN error --><span class="form_error">{error}</span><!-- END error --></td>', 'option[1]');
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$renderer->setElementTemplate('<td>{element} <br /><!-- BEGIN error --><span class="form_error">{error}</span><!-- END error --></td>', 'option[2]');
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$renderer->setElementTemplate('<td>{element} <br /><!-- BEGIN error --><span class="form_error">{error}</span><!-- END error --></td>', 'option[3]');
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// 3 scores
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$form->addElement('text', 'option[1]', get_lang('Correct'), array('class'=>'span1','value'=>'1'));
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$form->addElement('text', 'option[2]', get_lang('Wrong'), array('class'=>'span1','value'=>'-0.5'));
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$form->addElement('text', 'option[3]', get_lang('DoubtScore'),array('class'=>'span1','value'=>'0'));
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$form->addRule('option[1]', get_lang('ThisFieldIsRequired'), 'required');
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$form->addRule('option[2]', get_lang('ThisFieldIsRequired'), 'required');
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$form->addRule('option[3]', get_lang('ThisFieldIsRequired'), 'required');
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$form -> addElement ('html', '</tr><table>');
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$form -> addElement('hidden', 'options_count', 3);
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$form -> addElement ('html', '</table><br /><br />');
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//Extra values True, false, Dont known
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if (!empty($this->extra)) {
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$scores = explode(':',$this->extra);
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if (!empty($scores)) {
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for ($i = 1; $i <=3; $i++) {
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$defaults['option['.$i.']'] = $scores[$i-1];
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}
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}
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}
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//$form -> add_multiple_required_rule ($boxes_names , get_lang('ChooseAtLeastOneCheckbox') , 'multiple_required');
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$navigator_info = api_get_navigator();
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global $text, $class;
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if ($obj_ex->edit_exercise_in_lp == true) {
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//ie6 fix
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if ($navigator_info['name']=='Internet Explorer' && $navigator_info['version']=='6') {
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$form->addElement('submit', 'lessAnswers', get_lang('LessAnswer'),'class="btn minus"');
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$form->addElement('submit', 'moreAnswers', get_lang('PlusAnswer'),'class="btn plus"');
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$form->addElement('submit', 'submitQuestion',$text, 'class="'.$class.'"');
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} else {
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// setting the save button here and not in the question class.php
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$form->addElement('style_submit_button', 'lessAnswers', get_lang('LessAnswer'),'class="btn minus"');
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$form->addElement('style_submit_button', 'moreAnswers', get_lang('PlusAnswer'),'class="btn plus"');
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$form->addElement('style_submit_button', 'submitQuestion',$text, 'class="'.$class.'"');
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}
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}
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$renderer->setElementTemplate('{element} ','lessAnswers');
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$renderer->setElementTemplate('{element} ','submitQuestion');
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$renderer->setElementTemplate('{element} ','moreAnswers');
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$form -> addElement ('html', '</div></div>');
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$defaults['correct'] = $correct;
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if (!empty($this -> id)) {
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$form -> setDefaults($defaults);
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} else {
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//if ($this -> isContent == 1) {
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$form -> setDefaults($defaults);
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//}
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}
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$form->setConstants(array('nb_answers' => $nb_answers));
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}
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/**
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* abstract function which creates the form to create / edit the answers of the question
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* @param the formvalidator instance
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* @param the answers number to display
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*/
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function processAnswersCreation($form) {
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$questionWeighting = $nbrGoodAnswers = 0;
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$objAnswer = new Answer($this->id);
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$nb_answers = $form->getSubmitValue('nb_answers');
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$options_count = $form->getSubmitValue('options_count');
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$course_id = api_get_course_int_id();
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$correct = array();
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$options = Question::readQuestionOption($this->id, $course_id);
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if (!empty($options)) {
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foreach ($options as $option_data) {
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$id = $option_data['id'];
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unset($option_data['id']);
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Question::updateQuestionOption($id, $option_data, $course_id);
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}
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} else {
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for ($i=1 ; $i <= 3 ; $i++) {
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$last_id = Question::saveQuestionOption($this->id, $this->options[$i], $course_id, $i);
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$correct[$i] = $last_id;
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}
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}
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//Getting quiz_question_options (true, false, doubt) because it's possible that there are more options in the future
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$new_options = Question::readQuestionOption($this->id, $course_id);
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$sorted_by_position = array();
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foreach($new_options as $item) {
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$sorted_by_position[$item['position']] = $item;
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}
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//Saving quiz_question.extra values that has the correct scores of the true, false, doubt options registered in this format XX:YY:ZZZ where XX is a float score value
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$extra_values = array();
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for ($i=1 ; $i <= 3 ; $i++) {
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$score = trim($form -> getSubmitValue('option['.$i.']'));
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$extra_values[]= $score;
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}
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$this->setExtra(implode(':',$extra_values));
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for ($i=1 ; $i <= $nb_answers ; $i++) {
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$answer = trim($form -> getSubmitValue('answer['.$i.']'));
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$comment = trim($form -> getSubmitValue('comment['.$i.']'));
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$goodAnswer = trim($form -> getSubmitValue('correct['.$i.']'));
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if (empty($options)) {
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//If this is the first time that the question is created when change the default values from the form 1 and 2 by the correct "option id" registered
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$goodAnswer = $sorted_by_position[$goodAnswer]['id'];
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}
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$questionWeighting += $extra_values[0]; //By default 0 has the correct answers
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$objAnswer->createAnswer($answer, $goodAnswer, $comment,'',$i);
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}
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// saves the answers into the data base
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$objAnswer -> save();
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// sets the total weighting of the question
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$this -> updateWeighting($questionWeighting);
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$this -> save();
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}
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function return_header($feedback_type = null, $counter = null, $score = null) {
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$header = parent::return_header($feedback_type, $counter, $score);
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$header .= '<table class="'.$this->question_table_class .'">
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<tr>
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<th>'.get_lang("Choice").'</th>
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<th>'. get_lang("ExpectedChoice").'</th>
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<th>'. get_lang("Answer").'</th>';
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if ($feedback_type != EXERCISE_FEEDBACK_TYPE_EXAM) {
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$header .= '<th>'.get_lang("Comment").'</th>';
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} else {
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$header .= '<th> </th>';
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}
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$header .= '</tr>';
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return $header;
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}
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}
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