global_multiple_answer.class.php 11 KB

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  1. <?php
  2. /* For licensing terms, see /license.txt */
  3. class GlobalMultipleAnswer extends Question {
  4. static $typePicture = 'mcmagl.gif';
  5. static $explanationLangVar = 'GlobalMultipleAnswer';
  6. /* Constructor */
  7. function GlobalMultipleAnswer() {
  8. parent::question();
  9. $this->type = GLOBAL_MULTIPLE_ANSWER;
  10. $this->isContent = $this->getIsContent();
  11. }
  12. /**
  13. * function which redifines Question::createAnswersForm
  14. * @param the formvalidator instance
  15. * @param the answers number to display
  16. */
  17. function createAnswersForm($form) {
  18. $nb_answers = isset($_POST['nb_answers']) ? $_POST['nb_answers'] : 4;
  19. $nb_answers += (isset($_POST['lessAnswers']) ? -1 : (isset($_POST['moreAnswers']) ? 1 : 0));
  20. $obj_ex = $_SESSION['objExercise'];
  21. /* Mise en variable de Affichage "Reponses" et son icone, "N�", "Vrai", "Reponse" */
  22. $html = '<table class="data_table">
  23. <tr>
  24. <th width="10px">
  25. ' . get_lang('Number') . '
  26. </th>
  27. <th width="10px">
  28. ' . get_lang('True') . '
  29. </th>
  30. <th width="50%">
  31. ' . get_lang('Answer') . '
  32. </th>';
  33. // Espace entre l'entete et les r�ponses
  34. if ($obj_ex->selectFeedbackType() != EXERCISE_FEEDBACK_TYPE_EXAM) {
  35. $html .='<th>' . get_lang('Comment') . '</th>';
  36. }
  37. $html .='</tr>';
  38. $form->addElement('label', get_lang('Answers') . '<br /> <img src="../img/fill_field.png">', $html);
  39. /* Initialiation variable */
  40. $defaults = array();
  41. $correct = 0;
  42. /* Mise en variable du nombre de reponse */
  43. if (!empty($this->id)) {
  44. $answer = new Answer($this->id);
  45. $answer->read();
  46. if (count($answer->nbrAnswers) > 0 && !$form->isSubmitted()) {
  47. $nb_answers = $answer->nbrAnswers;
  48. }
  49. }
  50. #le nombre de r�ponses est bien enregistr� sous la forme int(nb)
  51. /* Ajout mise en forme nb reponse */
  52. $form->addElement('hidden', 'nb_answers');
  53. $boxes_names = array();
  54. /* V�rification : Cr�action d'au moins une r�ponse */
  55. if ($nb_answers < 1) {
  56. $nb_answers = 1;
  57. Display::display_normal_message(get_lang('YouHaveToCreateAtLeastOneAnswer'));
  58. }
  59. //D�but affichage score global dans la modification d'une question
  60. $scoreA = "0"; //par reponse
  61. $scoreG = "0"; //Global
  62. /* boucle pour sauvegarder les donn�es dans le tableau defaults */
  63. for ($i = 1; $i <= $nb_answers; ++$i) {
  64. /* si la reponse est de type objet */
  65. if (is_object($answer)) {
  66. $defaults['answer[' . $i . ']'] = $answer->answer[$i];
  67. $defaults['comment[' . $i . ']'] = $answer->comment[$i];
  68. $defaults['correct[' . $i . ']'] = $answer->correct[$i];
  69. //------------- D�but
  70. $scoreA = $answer->weighting[$i];
  71. }
  72. if ($scoreA > 0) {
  73. $scoreG = $scoreG + $scoreA;
  74. }
  75. //------------- Fin
  76. //------------- Debut si un des scores par reponse est egal � 0 : la coche vaut 1 (coch�)
  77. if ($scoreA == 0)
  78. $defaults['pts'] = 1;
  79. else
  80. $defaults['pts'] = 0;
  81. $renderer = & $form->defaultRenderer();
  82. $renderer->setElementTemplate('<td><!-- BEGIN error --><span class="form_error">{error}</span><!-- END error --><br/>{element}</td>', 'correct['.$i.']');
  83. $renderer->setElementTemplate('<td><!-- BEGIN error --><span class="form_error">{error}</span><!-- END error --><br/>{element}</td>', 'counter['.$i.']');
  84. $renderer->setElementTemplate('<td><!-- BEGIN error --><span class="form_error">{error}</span><!-- END error --><br/>{element}</td>', 'answer['.$i.']');
  85. $renderer->setElementTemplate('<td><!-- BEGIN error --><span class="form_error">{error}</span><!-- END error --><br/>{element}</td>', 'comment['.$i.']');
  86. //$renderer->setElementTemplate('<td><!-- BEGIN error --><span class="form_error">{error}</span><!-- END error --><br/>{element}</td>', 'weighting['.$i.']');
  87. $answer_number = $form->addElement('text', 'counter[' . $i . ']', null, 'value="' . $i . '"');
  88. $answer_number->freeze();
  89. $form->addElement('checkbox', 'correct[' . $i . ']', null, null, 'class="checkbox"');
  90. $boxes_names[] = 'correct[' . $i . ']';
  91. $form->addElement('html_editor', 'answer[' . $i . ']', null, 'style="vertical-align:middle"', array('ToolbarSet' => 'TestProposedAnswer', 'Width' => '100%', 'Height' => '100'));
  92. $form->addRule('answer[' . $i . ']', get_lang('ThisFieldIsRequired'), 'required');
  93. // show comment when feedback is enable
  94. if ($obj_ex->selectFeedbackType() != EXERCISE_FEEDBACK_TYPE_EXAM) {
  95. $form->addElement('html_editor', 'comment[' . $i . ']', null, 'style="vertical-align:middle"', array('ToolbarSet' => 'TestProposedAnswer', 'Width' => '100%', 'Height' => '100'));
  96. }
  97. $form->addElement('html', '</tr>');
  98. }
  99. //--------- Mise en variable du score global lors d'une modification de la question/r�ponse
  100. $defaults['weighting[1]'] = (round($scoreG));
  101. $form->addElement('html', '</div></div></table>');
  102. //$form -> addElement ('html', '<br />');
  103. $form->add_multiple_required_rule($boxes_names, get_lang('ChooseAtLeastOneCheckbox'), 'multiple_required');
  104. //only 1 answer the all deal ...
  105. $form->addElement('text', 'weighting[1]', get_lang('Score'));
  106. global $pts;
  107. //--------- Creation coche pour ne pas prendre en compte les n�gatifs
  108. $form->addElement('checkbox', 'pts', '', get_lang('NoNegativeScore'));
  109. $form->addElement('html', '<br />');
  110. // Affiche un message si le score n'est pas renseign�
  111. $form->addRule('weighting[1]', get_lang('ThisFieldIsRequired'), 'required');
  112. $navigator_info = api_get_navigator();
  113. global $text, $class;
  114. //ie6 fix
  115. if ($obj_ex->edit_exercise_in_lp == true) {
  116. if ($navigator_info['name'] == 'Internet Explorer' && $navigator_info['version'] == '6') {
  117. $form->addElement('submit', 'lessAnswers', get_lang('LessAnswer'), 'class="minus"');
  118. $form->addElement('submit', 'moreAnswers', get_lang('PlusAnswer'), 'class="plus"');
  119. $form->addElement('submit', 'submitQuestion', $text, 'class="' . $class . '"');
  120. } else {
  121. $form->addElement('style_submit_button', 'lessAnswers', get_lang('LessAnswer'), 'class="minus"');
  122. $form->addElement('style_submit_button', 'moreAnswers', get_lang('PlusAnswer'), 'class="plus"');
  123. $form->addElement('style_submit_button', 'submitQuestion', $text, 'class="' . $class . '"');
  124. // setting the save button here and not in the question class.php
  125. }
  126. }
  127. $renderer->setElementTemplate('{element}&nbsp;', 'lessAnswers');
  128. $renderer->setElementTemplate('{element}&nbsp;', 'submitQuestion');
  129. $renderer->setElementTemplate('{element}', 'moreAnswers');
  130. $form->addElement('html', '</div></div>');
  131. $defaults['correct'] = $correct;
  132. if (!empty($this->id)) {
  133. $form->setDefaults($defaults);
  134. } else {
  135. if ($this->isContent == 1) {
  136. $form->setDefaults($defaults);
  137. }
  138. }
  139. $form->setConstants(array('nb_answers' => $nb_answers));
  140. }
  141. /**
  142. * abstract function which creates the form to create / edit the answers of the question
  143. * @param the formvalidator instance
  144. * @param the answers number to display
  145. */
  146. function processAnswersCreation($form) {
  147. $questionWeighting = $nbrGoodAnswers = 0;
  148. $objAnswer = new Answer($this->id);
  149. $nb_answers = $form->getSubmitValue('nb_answers');
  150. // Score total
  151. $answer_score = trim($form->getSubmitValue('weighting[1]'));
  152. // Reponses correctes
  153. $nbr_corrects = 0;
  154. for ($i = 1; $i <= $nb_answers; $i++) {
  155. $goodAnswer = trim($form->getSubmitValue('correct[' . $i . ']'));
  156. if ($goodAnswer) {
  157. $nbr_corrects++;
  158. }
  159. }
  160. // Set question weighting (score total)
  161. $questionWeighting = $answer_score;
  162. // Set score per answer
  163. $nbr_corrects = $nbr_corrects == 0 ? 1 : $nbr_corrects;
  164. $answer_score = $nbr_corrects == 0 ? 0 : $answer_score;
  165. $answer_score = ($answer_score / $nbr_corrects);
  166. //$answer_score �quivaut � la valeur d'une bonne r�ponse
  167. // cr�ation variable pour r�cuperer la valeur de la coche pour la prise en compte des n�gatifs
  168. $test = "";
  169. $test = $form->getSubmitValue('pts');
  170. for ($i = 1; $i <= $nb_answers; $i++) {
  171. $answer = trim($form->getSubmitValue('answer[' . $i . ']'));
  172. $comment = trim($form->getSubmitValue('comment[' . $i . ']'));
  173. $goodAnswer = trim($form->getSubmitValue('correct[' . $i . ']'));
  174. if ($goodAnswer) {
  175. $weighting = abs($answer_score);
  176. } else {
  177. if ($test == 1) {
  178. $weighting = 0;
  179. }else
  180. $weighting = -abs($answer_score);
  181. }
  182. $objAnswer->createAnswer($answer, $goodAnswer, $comment, $weighting, $i);
  183. }
  184. // saves the answers into the data base
  185. $objAnswer->save();
  186. // sets the total weighting of the question --> sert � donner le score total pendant l'examen
  187. $this->updateWeighting($questionWeighting);
  188. $this->save();
  189. }
  190. function return_header($feedback_type = null, $counter = null, $score = null, $show_media = false) {
  191. $header = parent::return_header($feedback_type, $counter, $score, $show_media);
  192. $header .= '<table class="'.$this->question_table_class .'">
  193. <tr>
  194. <th>' . get_lang("Choice") . '</th>
  195. <th>' . get_lang("ExpectedChoice") . '</th>
  196. <th>' . get_lang("Answer") . '</th>';
  197. if ($feedback_type != EXERCISE_FEEDBACK_TYPE_EXAM) {
  198. $header .= '<th>' . get_lang("Comment") . '</th>';
  199. } else {
  200. $header .= '<th>&nbsp;</th>';
  201. }
  202. $header .= '</tr>';
  203. return $header;
  204. }
  205. }