get_string("multichoice", "quiz"),
TRUEFALSE => get_string("truefalse", "quiz"),
SHORTANSWER => get_string("shortanswer", "quiz"),
NUMERICAL => get_string("numerical", "quiz"),
CALCULATED => get_string("calculated", "quiz"),
MATCH => get_string("match", "quiz"),
DESCRIPTION => get_string("description", "quiz"),
RANDOMSAMATCH => get_string("randomsamatch", "quiz"),
MULTIANSWER => get_string("multianswer", "quiz"),
ESSAY => get_string("essay", "quiz")
);
// add remote question types
if ($rqp_types = get_records('quiz_rqp_types')) {
foreach($rqp_types as $type) {
$QUIZ_QUESTION_TYPE[100+$type->id] = $type->name;
}
}
/**
* Delete a question from a quiz
*
* Deletes a question or a pagebreak from a quiz by updating $modform
* as well as the quiz, quiz_question_instances, quiz_attemtps, quiz_states
* and quiz_newest_states tables.
* @return boolean false if the question was not in the quiz
* @param int $id The id of the question to be deleted
* @param object $modform The extended quiz object as used by edit.php
* This is updated by this function
*/
function quiz_delete_quiz_question($id, &$modform) {
$questions = explode(",", $modform->questions);
// only do something if this question exists
if (!isset($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]);
}
// if what we deleted was not a page break but a question then also
// delete associated grades, instances, attempts, states
if ($question != 0) {
unset($modform->grades[$question]);
// Delete all states associated with all attempts for this question in the quiz.
if ($attempts = get_records('quiz_attempts', 'quiz', $modform->instance)) {
foreach ($attempts as $attempt) {
delete_records('quiz_states', 'question', $question, 'attempt', $attempt->uniqueid);
delete_records('quiz_newest_states', 'questionid', $question, 'attemptid', $attempt->uniqueid);
}
}
// Delete all instances of the question in the quiz (there
// should only be one)
delete_records('quiz_question_instances', 'quiz',
$modform->instance, 'question', $question);
}
$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');
}
}
/**
* 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("quiz_questions", "id", $id);
if (!empty($questionrecord->defaultgrade)) {
$modform->grades[$id] = $questionrecord->defaultgrade;
} else if ($questionrecord->qtype == DESCRIPTION){
$modform->grades[$id] = 0;
} else {
$modform->grades[$id] = 1;
}
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 $showbreaks Indicates whether the page breaks should be displayed
*/
function quiz_print_question_list($quiz, $allowdelete=true, $showbreaks=true) {
global $USER, $CFG, $QUIZ_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}quiz_questions q,
{$CFG->prefix}quiz_categories c
WHERE q.id in ($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 "\n";
/// Form to choose to show pagebreaks and to repaginate quiz
echo '';
return $sumgrade;
}
function quiz_print_category_form($course, $current, $recurse=1, $showhidden=false) {
/// Prints a form to choose categories
/// Make sure the default category exists for this course
if (!$categories = get_records("quiz_categories", "course", $course->id, "id ASC")) {
if (!$category = quiz_get_default_category($course->id)) {
notify("Error creating a default category!");
}
}
/// Get all the existing categories now
if (!$categories = get_records_select("quiz_categories", "course = '{$course->id}' OR publish = '1'", "parent, sortorder, name ASC")) {
notify("Could not find any question categories!");
return false; // Something is really wrong
}
$categories = add_indented_names($categories);
foreach ($categories as $key => $category) {
if ($catcourse = get_record("course", "id", $category->course)) {
if ($category->publish && $category->course != $course->id) {
$category->indentedname .= " ($catcourse->shortname)";
}
$catmenu[$category->id] = $category->indentedname;
}
}
$strcategory = get_string("category", "quiz");
$strshow = get_string("show", "quiz");
$streditcats = get_string("editcategories", "quiz");
echo "| ";
echo "$strcategory: ";
echo " | ";
popup_form ("edit.php?cat=", $catmenu, "catmenu", $current, "", "", "", false, "self");
echo " | ";
echo "";
echo ' |
';
echo '';
}
/**
* Prints the table of questions in a category with interactions
*
* @param object $course The course object
* @param int $categoryid The id of the question category to be displayed
* @param int $quizid The quiz id if we are in the context of a particular quiz, 0 otherwise
* @param int $recurse This is 1 if subcategories should be included, 0 otherwise
* @param int $page The number of the page to be displayed
* @param int $perpage Number of questions to show per page
* @param boolean $showhidden True if also hidden questions should be displayed
*/
function quiz_print_cat_question_list($course, $categoryid, $quizid,
$recurse=1, $page, $perpage, $showhidden=false, $sortorder='qtype, name ASC') {
global $QUIZ_QUESTION_TYPE, $USER;
$strcategory = get_string("category", "quiz");
$strquestion = get_string("question", "quiz");
$straddquestions = get_string("addquestions", "quiz");
$strimportquestions = get_string("importquestions", "quiz");
$strexportquestions = get_string("exportquestions", "quiz");
$strnoquestions = get_string("noquestions", "quiz");
$strselect = get_string("select", "quiz");
$strselectall = get_string("selectall", "quiz");
$strselectnone = get_string("selectnone", "quiz");
$strcreatenewquestion = get_string("createnewquestion", "quiz");
$strquestionname = get_string("questionname", "quiz");
$strdelete = get_string("delete");
$stredit = get_string("edit");
$straction = get_string("action");
$strrestore = get_string('restore');
$straddtoquiz = get_string("addtoquiz", "quiz");
$strtype = get_string("type", "quiz");
$strcreatemultiple = get_string("createmultiple", "quiz");
$strpreview = get_string("preview","quiz");
$strsortalpha = get_string("sortalpha", "quiz");
$strsortage = get_string("sortage", "quiz");
$strsortsubmit = get_string("sortsubmit", "quiz");
if (!$categoryid) {
echo "";
print_string("selectcategoryabove", "quiz");
echo "
";
if ($quizid) {
echo "";
print_string("addingquestions", "quiz");
echo "
";
}
return;
}
if (!$category = get_record("quiz_categories", "id", "$categoryid")) {
notify("Category not found!");
return;
}
echo "";
echo format_text($category->info, FORMAT_MOODLE);
echo '';
// check if editing of this category is allowed
if (isteacheredit($category->course)) {
echo "| $strcreatenewquestion: | ";
echo '';
popup_form ("question.php?category=$category->id&qtype=", $QUIZ_QUESTION_TYPE, "addquestion",
"", "choose", "", "", false, "self");
echo ' | ';
helpbutton("questiontypes", $strcreatenewquestion, "quiz");
echo ' |
';
}
else {
echo '| ';
print_string("publishedit","quiz");
echo ' |
';
}
echo '| ';
if (isteacheredit($category->course)) {
echo ''.$strimportquestions.'';
helpbutton("import", $strimportquestions, "quiz");
echo ' | ';
}
echo "id}&courseid={$course->id}\">$strexportquestions";
helpbutton("export", $strexportquestions, "quiz");
echo ' |
';
echo '
';
echo '';
$categorylist = ($recurse) ? quiz_categorylist($category->id) : $category->id;
// hide-feature
$showhidden = $showhidden ? '' : " AND hidden = '0'";
if (!$totalnumber = count_records_select('quiz_questions', "category IN ($categorylist) AND parent = '0' $showhidden")) {
echo "";
print_string("noquestions", "quiz");
echo "
";
return;
}
if (!$questions = get_records_select('quiz_questions', "category IN ($categorylist) AND parent = '0' $showhidden", $sortorder, '*', $page*$perpage, $perpage)) {
// There are no questions on the requested page.
$page = 0;
if (!$questions = get_records_select('quiz_questions', "category IN ($categorylist) AND parent = '0' $showhidden", $sortorder, '*', 0, $perpage)) {
// There are no questions at all
echo "";
print_string("noquestions", "quiz");
echo "
";
return;
}
}
print_paging_bar($totalnumber, $page, $perpage,
"edit.php?perpage=$perpage&");
$canedit = isteacheredit($category->course);
echo '\n";
}
?>