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							340 lines
						
					
					
						
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							340 lines
						
					
					
						
							12 KiB
						
					
					
				<?php
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/* For licensing terms, see /license.txt */
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/**
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 * Class MultipleAnswerTrueFalse
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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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 *
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 * @package chamilo.exercise
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 */
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class MultipleAnswerTrueFalse extends Question
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{
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    static $typePicture = 'mcmao.png';
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    static $explanationLangVar = 'MultipleAnswerTrueFalse';
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    public $options;
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    /**
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     * Constructor
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     */
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    public function __construct()
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    {
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        parent::__construct();
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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 => 'True', 2 => 'False', 3 => 'DoubtScore');
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    }
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    /**
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     * function which redefines Question::createAnswersForm
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     * @param FormValidator $form
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     */
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    public function createAnswersForm($form)
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    {
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        $nb_answers = isset($_POST['nb_answers']) ? $_POST['nb_answers'] : 4;
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        // 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="table table-striped table-hover">';
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        $html .= '<thead>';
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        $html .= '<tr>';
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        $html .= '<th>' . get_lang('Number') . '</th>';
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        $html .= '<th>' . get_lang('True') . '</th>';
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        $html .= '<th>' . get_lang('False') . '</th>';
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        $html .= '<th>' . get_lang('Answer') . '</th>';
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        // show column comment when feedback is enable
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        if ($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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        $html .= '</thead>';
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        $html .= '<tbody>';
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        $form->addHeader(get_lang('Answers'));
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        $form->addHtml($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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        $optionData = Question::readQuestionOption($this->id, $course_id);
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        for ($i = 1; $i <= $nb_answers; ++$i) {
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            $form->addHtml('<tr>');
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            $renderer->setElementTemplate(
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                '<td><!-- BEGIN error --><span class="form_error">{error}</span><!-- END error --><br/>{element}</td>',
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                'correct[' . $i . ']'
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            );
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            $renderer->setElementTemplate(
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                '<td><!-- BEGIN error --><span class="form_error">{error}</span><!-- END error --><br/>{element}</td>',
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                'counter[' . $i . ']'
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            );
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            $renderer->setElementTemplate(
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                '<td><!-- BEGIN error --><span class="form_error">{error}</span><!-- END error --><br/>{element}</td>',
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                'answer[' . $i . ']'
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            );
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            $renderer->setElementTemplate(
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                '<td><!-- BEGIN error --><span class="form_error">{error}</span><!-- END error --><br/>{element}</td>',
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                'comment[' . $i . ']'
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            );
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            $answer_number = $form->addElement(
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                'text',
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                'counter['.$i.']',
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                null,
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                'value="'.$i.'"'
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            );
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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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                $correct = $answer->correct[$i];
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                $defaults['correct[' . $i . ']'] = $correct;
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                $j = 1;
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                if (!empty($optionData)) {
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                    foreach ($optionData 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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            $boxes_names[] = 'correct[' . $i . ']';
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            $form->addHtmlEditor(
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                "answer[$i]",
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                get_lang('ThisFieldIsRequired'),
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                true,
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                true,
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                ['ToolbarSet' => 'TestProposedAnswer', 'Width' => '100%', 'Height' => '100']
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            );
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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(
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                    'html_editor',
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                    'comment[' . $i . ']',
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                    null,
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                    array(),
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                    array(
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                        'ToolbarSet' => 'TestProposedAnswer',
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                        'Width' => '100%',
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                        'Height' => '100',
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                    )
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                );
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            }
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            $form->addHtml('</tr>');
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        }
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        $form->addHtml('</tbody></table>');
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        $correctInputTemplate = '<div class="form-group">';
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        $correctInputTemplate .= '<label class="col-sm-2 control-label">';
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        $correctInputTemplate .= '<span class="form_required">*</span>' . get_lang('Score');
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        $correctInputTemplate .= '</label>';
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        $correctInputTemplate .= '<div class="col-sm-8">';
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        $correctInputTemplate .= '<table>';
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        $correctInputTemplate .= '<tr>';
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        $correctInputTemplate .= '<td>';
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        $correctInputTemplate .= get_lang('Correct') . '{element}';
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        $correctInputTemplate .= '<!-- BEGIN error --><span class="form_error">{error}</span><!-- END error -->';
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        $correctInputTemplate .= '</td>';
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        $wrongInputTemplate = '<td>';
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        $wrongInputTemplate .= get_lang('Wrong') . '{element}';
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        $wrongInputTemplate .= '<!-- BEGIN error --><span class="form_error">{error}</span><!-- END error -->';
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        $wrongInputTemplate .= '</td>';
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        $doubtScoreInputTemplate = '<td>' . get_lang('DoubtScore') . '<br>{element}';
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        $doubtScoreInputTemplate .= '<!-- BEGIN error --><span class="form_error">{error}</span><!-- END error -->';
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        $doubtScoreInputTemplate .= '</td>';
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        $doubtScoreInputTemplate .= '</tr>';
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        $doubtScoreInputTemplate .= '</table>';
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        $doubtScoreInputTemplate .= '</div>';
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        $doubtScoreInputTemplate .= '</div>';
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        $renderer->setElementTemplate($correctInputTemplate, 'option[1]');
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        $renderer->setElementTemplate($wrongInputTemplate, 'option[2]');
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        $renderer->setElementTemplate($doubtScoreInputTemplate, '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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        $form->addElement('hidden', 'options_count', 3);
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        // Extra values True, false,  Dont known
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        if (!empty($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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        global $text;
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        if ($obj_ex->edit_exercise_in_lp == true) {
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            // setting the save button here and not in the question class.php
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            $buttonGroup[] = $form->addButtonDelete(get_lang('LessAnswer'), 'lessAnswers', true);
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            $buttonGroup[] = $form->addButtonCreate(get_lang('PlusAnswer'), 'moreAnswers', true);
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            $buttonGroup[] = $form->addButtonSave($text, 'submitQuestion', true);
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            $form->addGroup($buttonGroup);
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        }
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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 FormValidator $form
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	 */
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    public function processAnswersCreation($form)
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    {
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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 $optionData) {
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                $id = $optionData['id'];
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                unset($optionData['id']);
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                Question::updateQuestionOption($id, $optionData, $course_id);
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            }
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        } else {
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            for ($i=1 ; $i <= 3 ; $i++) {
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                $last_id = Question::saveQuestionOption(
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                    $this->id,
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                    $this->options[$i],
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                    $course_id,
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                    $i
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                );
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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
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        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
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        the true, false, doubt options registered in this format
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        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
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                // 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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    /**
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     * @param int $feedback_type
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     * @param int $counter
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     * @param float $score
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     * @return null|string
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     */
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    function return_header($feedback_type = null, $counter = null, $score = null)
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    {
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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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