questions); // only do something if this question exists if (!isset($questions[$id])) { return false; } $question = $questions[$id]; unset($questions[$id]); // If we deleted the question at the top and it was followed by // a page break then delete page break as well if ($id == 0 and $questions[1] == 0) { unset($questions[1]); } $modform->questions = implode(",", $questions); // Avoid duplicate page breaks $modform->questions = str_replace(',0,0', ',0', $modform->questions); // save new questionlist in database if (!set_field('quiz', 'questions', $modform->questions, 'id', $modform->instance)) { error('Could not save question list'); } delete_records('quiz_question_instances', 'quiz', $modform->instance, 'question', $question); return true; } /** * Add a question to a quiz * * Adds a question to a quiz by updating $modform as well as the * quiz and quiz_question_instances tables. It also adds a page break * if required. * @return boolean false if the question was already in the quiz * @param int $id The id of the question to be added * @param object $modform The extended quiz object as used by edit.php * This is updated by this function */ function quiz_add_quiz_question($id, &$modform) { $questions = explode(",", $modform->questions); if (in_array($id, $questions)) { return false; } // remove ending page break if it is not needed if ($breaks = array_keys($questions, 0)) { // determine location of the last two page breaks $end = end($breaks); $last = prev($breaks); $last = $last ? $last : -1; if (!$modform->questionsperpage or (($end - $last -1) < $modform->questionsperpage)) { array_pop($questions); } } // add question $questions[] = $id; // add ending page break $questions[] = 0; // Save new questionslist in database $modform->questions = implode(",", $questions); if (!set_field('quiz', 'questions', $modform->questions, 'id', $modform->id)) { error('Could not save question list'); } // update question grades $questionrecord = get_record("question", "id", $id); $modform->grades[$id] = $questionrecord->defaultgrade; quiz_update_question_instance($modform->grades[$id], $id, $modform->instance); return true; } /** * Save changes to question instance * * Saves changes to the question grades in the quiz_question_instances table. * It does not update 'sumgrades' in the quiz table. * @return boolean Indicates success or failure. * @param integer grade The maximal grade for the question * @param integer $questionid The id of the question * @param integer $quizid The id of the quiz to update / add the instances for. */ function quiz_update_question_instance($grade, $questionid, $quizid) { if ($instance = get_record("quiz_question_instances", "quiz", $quizid, 'question', $questionid)) { $instance->grade = $grade; return update_record('quiz_question_instances', $instance); } else { unset($instance); $instance->quiz = $quizid; $instance->question = $questionid; $instance->grade = $grade; return insert_record("quiz_question_instances", $instance); } } /** * Prints a list of quiz questions in a small layout form with knobs * * @return int sum of maximum grades * @param object $quiz This is not the standard quiz object used elsewhere but * it contains the quiz layout in $quiz->questions and the grades in * $quiz->grades * @param boolean $allowdelete Indicates whether the delete icons should be displayed * @param boolean $showbreaks Indicates whether the page breaks should be displayed * @param boolean $showbreaks Indicates whether the reorder tool should be displayed */ function quiz_print_question_list($quiz, $allowdelete=true, $showbreaks=true, $reordertool=false) { global $USER, $CFG, $QTYPES; $strorder = get_string("order"); $strquestionname = get_string("questionname", "quiz"); $strgrade = get_string("grade"); $strremove = get_string('remove', 'quiz'); $stredit = get_string("edit"); $straction = get_string("action"); $strmoveup = get_string("moveup"); $strmovedown = get_string("movedown"); $strsavegrades = get_string("savegrades", "quiz"); $strtype = get_string("type", "quiz"); $strpreview = get_string("preview", "quiz"); if (!$quiz->questions) { echo "

"; print_string("noquestions", "quiz"); echo "

"; return 0; } if (!$questions = get_records_sql("SELECT q.*,c.course FROM {$CFG->prefix}question q, {$CFG->prefix}question_categories c WHERE q.id in ($quiz->questions) AND q.category = c.id")) { echo "

"; print_string("noquestions", "quiz"); echo "

"; return 0; } $count = 0; $qno = 1; $sumgrade = 0; $order = explode(",", $quiz->questions); $lastindex = count($order)-1; // If the list does not end with a pagebreak then add it on. if ($order[$lastindex] != 0) { $order[] = 0; $lastindex++; } echo "
"; echo "sesskey\" />"; print_simple_box_start('center', '100%', '#ffffff', 0); echo "\n"; echo "\n"; foreach ($order as $i => $qnum) { if ($qnum and empty($questions[$qnum])) { continue; } // If the questiontype is missing change the question type if ($qnum and !array_key_exists($questions[$qnum]->qtype, $QTYPES)) { $questions[$qnum]->qtype = 'missingtype'; } // Show the re-ordering field if the tool is turned on. // But don't show it in front of pagebreaks if they are hidden. if ($reordertool) { if ($qnum or $showbreaks) { echo ''; } else { echo ''; } } else { echo ''; } if ($qnum == 0) { // This is a page break if ($showbreaks) { echo ''; echo ''; echo ''; } $count++; continue; } $question = $questions[$qnum]; $canedit = has_capability('moodle/question:manage', get_context_instance(CONTEXT_COURSE, $question->course)); echo ""; echo ""; if (!$quiz->shufflequestions) { // Print and increment question number echo ''; $qno += $question->length; } else { echo ''; } echo ""; echo ""; echo '"; $count++; $sumgrade += $quiz->grades[$qnum]; } echo "\n"; echo "
$strorder#$strquestionname$strtype$strgrade$straction
 '; echo ''; echo ''; echo '
Page break
'; if ($count > 1) { echo "id&sesskey=$USER->sesskey\">pixpath/t/up.gif\" border=\"0\" alt=\"$strmoveup\" />"; } echo ' '; if ($count < $lastindex) { echo "id&sesskey=$USER->sesskey\">pixpath/t/down.gif\" border=\"0\" alt=\"$strmovedown\" />"; echo "id&sesskey=$USER->sesskey\"> pixpath/t/delete.gif\" border=\"0\" alt=\"$strremove\" />"; } echo '
 
"; if ($count != 0) { echo "id&sesskey=$USER->sesskey\">pixpath/t/up.gif\" border=\"0\" alt=\"$strmoveup\" />"; } echo ""; if ($count < $lastindex-1) { echo "id&sesskey=$USER->sesskey\">pixpath/t/down.gif\" border=\"0\" alt=\"$strmovedown\" />"; } echo "'.($question->length ? $qno : ' ').' $question->name"; print_question_icon($question, $canedit); echo "'; if ($question->qtype == 'description') { echo " \n"; } else { echo ''; } echo ''; $context = $quiz->id ? '&contextquiz='.$quiz->id : ''; $quiz_id = $quiz->id ? '&quizid=' . $quiz->id : ''; if ($question->qtype != 'random') { echo " pixpath/t/preview.gif\" border=\"0\" alt=\"$strpreview\" />"; } if ($canedit) { echo "wwwroot/question/question.php?id=$qnum$context\"> pixpath/t/edit.gif\" border=\"0\" alt=\"$stredit\" />"; } if ($allowdelete) { echo "id&sesskey=$USER->sesskey\"> pixpath/t/removeright.gif\" border=\"0\" alt=\"$strremove\" />"; } echo "
\n"; print_string('total'); echo ": \n"; echo "$sumgrade"; echo " \n
\n"; print_string('maximumgrade'); echo ": \n"; echo ''; echo ''; helpbutton("maxgrade", get_string("maximumgrade"), "quiz"); echo "
\n"; echo '
'; echo '
'; echo ''; // ugly hack to prevent modform session "mistakes" print_simple_box_end(); echo "
\n"; /// Form to choose to show pagebreaks and to repaginate quiz echo '
'; echo ''; echo ''; echo ''; print_string('showbreaks', 'quiz'); if ($showbreaks) { $perpage= array(); for ($i=0; $i<=50; ++$i) { $perpage[$i] = $i; } $perpage[0] = get_string('allinone', 'quiz'); echo '
  '; print_string('repaginate', 'quiz', choose_from_menu($perpage, 'questionsperpage', $quiz->questionsperpage, '', '', '', true)); } echo '
'; echo ''; print_string('reordertool', 'quiz'); helpbutton('reorderingtool', get_string('reorderingtool', 'quiz'), 'quiz'); echo '
'; echo '
'; return $sumgrade; } ?>