chamilo-lms2/main/exercise/global_multiple_answer.class.php

<?php
/* For licensing terms, see /license.txt */

use ChamiloSession as Session;

/**
 * Class GlobalMultipleAnswer
 */
class GlobalMultipleAnswer extends Question
{
    public static $typePicture = 'mcmagl.png';
    public static $explanationLangVar = 'GlobalMultipleAnswer';

    /**
     * Constructor
     */
    public function __construct()
    {
        parent::__construct();
        $this->type = GLOBAL_MULTIPLE_ANSWER;
        $this->isContent = $this->getIsContent();
    }

    /**
     * function which redefines Question::createAnswersForm
     * @param FormValidator $form
     */
    public function createAnswersForm($form)
    {
        $nb_answers = isset($_POST['nb_answers']) ? $_POST['nb_answers'] : 4;
        $nb_answers += (isset($_POST['lessAnswers']) ? -1 : (isset($_POST['moreAnswers']) ? 1 : 0));

        $obj_ex = Session::read('objExercise');

        /* Mise en variable de Affichage "Reponses" et son icone, "N�", "Vrai", "Reponse" */
        $html = '<table class="data_table">
                <tr>
                    <th width="10px">
                        ' . get_lang('Number') . '
                    </th>
                    <th width="10px">
                        ' . get_lang('True') . '
                    </th>
                    <th width="50%">
                        ' . get_lang('Answer') . '
                    </th>';

        $html .='<th>' . get_lang('Comment') . '</th>';
        $html .='</tr>';
        $form->addElement('label', get_lang('Answers') . '<br /> '.Display::returnIconPath('fill_field.png'), $html);
        $defaults = array();
        $correct = 0;
        $answer = false;
        if (!empty($this->id)) {
            $answer = new Answer($this->id);
            $answer->read();
            if (count($answer->nbrAnswers) > 0 && !$form->isSubmitted()) {
                $nb_answers = $answer->nbrAnswers;
            }
        }

        #le nombre de r�ponses est bien enregistr� sous la forme int(nb)

        /* Ajout mise en forme nb reponse */
        $form->addElement('hidden', 'nb_answers');
        $boxes_names = array();

        /* V�rification : Cr�action d'au moins une r�ponse */
        if ($nb_answers < 1) {
            $nb_answers = 1;
            Display::display_normal_message(get_lang('YouHaveToCreateAtLeastOneAnswer'));
        }

        //D�but affichage score global dans la modification d'une question
        $scoreA = "0"; //par reponse
        $scoreG = "0"; //Global

        /* boucle pour sauvegarder les donn�es dans le tableau defaults */
        for ($i = 1; $i <= $nb_answers; ++$i) {
            /* si la reponse est de type objet */
            if (is_object($answer)) {
                $defaults['answer[' . $i . ']'] = $answer->answer[$i];
                $defaults['comment[' . $i . ']'] = $answer->comment[$i];
                $defaults['correct[' . $i . ']'] = $answer->correct[$i];

                // start
                $scoreA = $answer->weighting[$i];
            }
            if ($scoreA > 0) {
                $scoreG = $scoreG + $scoreA;
            }
            //------------- Fin
            //------------- Debut si un des scores par reponse est egal � 0 : la coche vaut 1 (coch�)
            if ($scoreA == 0) {
                $defaults['pts'] = 1;
            }

            $renderer = & $form->defaultRenderer();

            $renderer->setElementTemplate('<td><!-- BEGIN error --><span class="form_error">{error}</span><!-- END error --><br/>{element}</td>', 'correct['.$i.']');
            $renderer->setElementTemplate('<td><!-- BEGIN error --><span class="form_error">{error}</span><!-- END error --><br/>{element}</td>', 'counter['.$i.']');
            $renderer->setElementTemplate('<td><!-- BEGIN error --><span class="form_error">{error}</span><!-- END error --><br/>{element}</td>', 'answer['.$i.']');
            $renderer->setElementTemplate('<td><!-- BEGIN error --><span class="form_error">{error}</span><!-- END error --><br/>{element}</td>', 'comment['.$i.']');
            //$renderer->setElementTemplate('<td><!-- BEGIN error --><span class="form_error">{error}</span><!-- END error --><br/>{element}</td>', 'weighting['.$i.']');

            $answer_number = $form->addElement('text', 'counter[' . $i . ']', null, 'value="' . $i . '"');
            $answer_number->freeze();

            $form->addElement('checkbox', 'correct[' . $i . ']', null, null, 'class="checkbox"');
            $boxes_names[] = 'correct[' . $i . ']';

            $form->addHtmlEditor('answer[' . $i . ']', null, null, array('ToolbarSet' => 'TestProposedAnswer', 'Width' => '100%', 'Height' => '100'));
            $form->addRule('answer[' . $i . ']', get_lang('ThisFieldIsRequired'), 'required');

            $form->addHtmlEditor('comment[' . $i . ']', null, null, array('ToolbarSet' => 'TestProposedAnswer', 'Width' => '100%', 'Height' => '100'));

            $form->addElement('html', '</tr>');
        }
        //--------- Mise en variable du score global lors d'une modification de la question/r�ponse
        $defaults['weighting[1]'] = (round($scoreG));

        $form->addElement('html', '</div></div></table>');

        //$form -> addElement ('html', '<br />');
        $form->add_multiple_required_rule($boxes_names, get_lang('ChooseAtLeastOneCheckbox'), 'multiple_required');

        //only 1 answer the all deal ...
        $form->addElement('text', 'weighting[1]', get_lang('Score'));

        //--------- Creation coche pour ne pas prendre en compte les n�gatifs
        $form->addElement('checkbox', 'pts', '', get_lang('NoNegativeScore'));
        $form->addElement('html', '<br />');

        // Affiche un message si le score n'est pas renseign�
        $form->addRule('weighting[1]', get_lang('ThisFieldIsRequired'), 'required');

        global $text, $class;

        if ($obj_ex->edit_exercise_in_lp == true) {
            $form->addButtonDelete(get_lang('LessAnswer'), 'lessAnswers');
            $form->addButtonCreate(get_lang('PlusAnswer'), 'moreAnswers');
            $form->addButtonSave($text, 'submitQuestion');
            // setting the save button here and not in the question class.php
        }

        $renderer->setElementTemplate('{element}&nbsp;', 'lessAnswers');
        $renderer->setElementTemplate('{element}&nbsp;', 'submitQuestion');
        $renderer->setElementTemplate('{element}', 'moreAnswers');

        $form->addElement('html', '</div></div>');

        $defaults['correct'] = $correct;

        if (!empty($this->id)) {
            $form->setDefaults($defaults);
        } else {
            if ($this->isContent == 1) {
                $form->setDefaults($defaults);
            }
        }
        $form->setConstants(array('nb_answers' => $nb_answers));
    }

    /**
     * abstract function which creates the form to create / edit the answers of the question
     * @param FormValidator $form
     */
    function processAnswersCreation($form)
    {
        $questionWeighting = $nbrGoodAnswers = 0;
        $objAnswer = new Answer($this->id);
        $nb_answers = $form->getSubmitValue('nb_answers');

        // Score total
        $answer_score = trim($form->getSubmitValue('weighting[1]'));

        // Reponses correctes
        $nbr_corrects = 0;
        for ($i = 1; $i <= $nb_answers; $i++) {
            $goodAnswer = trim($form->getSubmitValue('correct[' . $i . ']'));
            if ($goodAnswer) {
                $nbr_corrects++;
            }
        }
        // Set question weighting (score total)
        $questionWeighting = $answer_score;

        // Set score per answer
        $nbr_corrects = $nbr_corrects == 0 ? 1 : $nbr_corrects;
        $answer_score = $nbr_corrects == 0 ? 0 : $answer_score;

        $answer_score = ($answer_score / $nbr_corrects);

        //$answer_score �quivaut � la valeur d'une bonne r�ponse
        // cr�ation variable pour r�cuperer la valeur de la coche pour la prise en compte des n�gatifs
        $test = $form->getSubmitValue('pts');

        for ($i = 1; $i <= $nb_answers; $i++) {
            $answer = trim($form->getSubmitValue('answer[' . $i . ']'));
            $comment = trim($form->getSubmitValue('comment[' . $i . ']'));
            $goodAnswer = trim($form->getSubmitValue('correct[' . $i . ']'));

            if ($goodAnswer) {
                $weighting = abs($answer_score);
            } else {
                if ($test == 1) {
                    $weighting = 0;
                } else {
                    $weighting = -abs($answer_score);
                }
            }

            $objAnswer->createAnswer($answer, $goodAnswer, $comment, $weighting, $i);
        }
        // saves the answers into the data base
        $objAnswer->save();

        // sets the total weighting of the question --> sert � donner le score total pendant l'examen
        $this->updateWeighting($questionWeighting);
        $this->save();
    }

    public function return_header(
        $feedback_type = null,
        $counter = null,
        $score = null
    ) {
        $header = parent::return_header($feedback_type, $counter, $score);
        $header .= '<table class="'.$this->question_table_class .'">
        <tr>
            <th>' . get_lang("Choice") . '</th>
            <th>' . get_lang("ExpectedChoice") . '</th>
            <th>' . get_lang("Answer") . '</th>';
        $header .= '<th>' . get_lang("Comment") . '</th>';
        $header .= '</tr>';

        return $header;
    }
}