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<?PHP // $Id: question.php,v 1.44 2004/08/22 19:21:02 gustav_delius Exp $
/// For creating and editing quiz questions.
require_once("../../config.php");
require_once("lib.php");
require_once("../../files/mimetypes.php");
optional_variable($id); // question id
optional_variable($qtype);
optional_variable($category);
if ($id) {
if (! $question = get_record("quiz_questions", "id", $id)) {
error("This question doesn't exist");
}
if (!empty($category)) {
$question->category = $category;
}
if (! $category = get_record("quiz_categories", "id", $question->category)) {
error("This question doesn't belong to a valid category!");
}
if (! $course = get_record("course", "id", $category->course)) {
error("This question category doesn't belong to a valid course!");
}
$qtype = $question->qtype;
} else if ($category) {
if (! $category = get_record("quiz_categories", "id", $category)) {
error("This wasn't a valid category!");
}
if (! $course = get_record("course", "id", $category->course)) {
error("This category doesn't belong to a valid course!");
}
$question->category = $category->id;
$question->qtype = $qtype;
} else {
error("Must specify question id or category");
}
if (empty($qtype)) {
error("No question type was specified!");
} else if (!isset($QUIZ_QTYPES[$qtype])) {
error("Could not find question type: '$qtype'");
}
require_login($course->id);
if (!isteacheredit($course->id)) {
error("You can't modify these questions!");
}
$strquizzes = get_string('modulenameplural', 'quiz');
$streditingquiz = get_string(isset($SESSION->modform->instance) ? "editingquiz" : "editquestions", "quiz");
$streditingquestion = get_string("editingquestion", "quiz");
print_header_simple("$streditingquestion", "$streditingquestion",
"<a href=\"$CFG->wwwroot/mod/quiz/index.php?id=$course->id\">$strquizzes</a>".
" -> <a href=\"edit.php\">$streditingquiz</a> -> $streditingquestion");
if (isset($delete)) {
if (isset($confirm)) {
if ($confirm == md5($delete)) {
if (!delete_records("quiz_questions", "id", $question->id)) {
error("An error occurred trying to delete question (id $question->id)");
}
redirect("edit.php");
} else {
error("Confirmation string was incorrect");
}
} else {
// determine if the question is being used in any quiz
if ($category->publish) {
$quizzes = get_records("quiz");
} else {
$quizzes = get_records("quiz", "course", $course->id);
}
$beingused = array();
if ($quizzes) {
foreach ($quizzes as $quiz) {
$qqq = explode(",", $quiz->questions);
foreach ($qqq as $key => $value) {
if ($value == $delete) {
$beingused[] = $quiz->name;
}
}
}
}
if ($beingused) {
$beingused = implode(", ", $beingused);
$beingused = get_string("questioninuse", "quiz", "<I>$question->name</I>")."<P>".$beingused;
notice($beingused, "edit.php");
} else { // the question is not used in any of the existing quizzes
// we also have to check if the question is being used in the quiz
// which is currently being set up
if (isset($SESSION->modform)) {
if ($qus = explode(",", $SESSION->modform->questions)) {
foreach ($qus as $key => $qu) {
if ($qu == $delete) {
unset($qus[$key]);
unset($SESSION->modform->grades[$qu]);
}
}
}
$SESSION->modform->questions = implode(",", $qus);
}
notice_yesno(get_string("deletequestioncheck", "quiz", $question->name),
"question.php?id=$question->id&delete=$delete&confirm=".md5($delete), "edit.php");
}
print_footer($course);
exit;
}
}
if ($form = data_submitted()) {
$question = $QUIZ_QTYPES[$qtype]->save_question($question, $form, $course);
}
$grades = array(1,0.9,0.8,0.75,0.70,0.66666,0.60,0.50,0.40,0.33333,0.30,0.25,0.20,0.16666,0.10,0.05,0);
foreach ($grades as $grade) {
$percentage = 100 * $grade;
$neggrade = -$grade;
$gradeoptions["$grade"] = "$percentage %";
$gradeoptionsfull["$grade"] = "$percentage %";
$gradeoptionsfull["$neggrade"] = -$percentage." %";
}
$gradeoptionsfull["0"] = $gradeoptions["0"] = get_string("none");
arsort($gradeoptions, SORT_NUMERIC);
arsort($gradeoptionsfull, SORT_NUMERIC);
if (!$categories = quiz_get_category_menu($course->id, true)) {
error("No categories!");
}
make_upload_directory("$course->id"); // Just in case
$coursefiles = get_directory_list("$CFG->dataroot/$course->id", $CFG->moddata);
foreach ($coursefiles as $filename) {
if (mimeinfo("icon", $filename) == "image.gif") {
$images["$filename"] = $filename;
}
}
// Print the question editing form
if (empty($question->id)) {
$question->id = "";
}
if (empty($question->name)) {
$question->name = "";
}
if (empty($question->questiontext)) {
$question->questiontext = "";
}
if (empty($question->image)) {
$question->image = "";
}
// Set up some Richtext editing if necessary
if ($usehtmleditor = can_use_richtext_editor()) {
$defaultformat = FORMAT_HTML;
} else {
$defaultformat = FORMAT_MOODLE;
}
require('questiontypes/'.$QUIZ_QTYPES[$qtype]->name().'/editquestion.php');
if ($usehtmleditor) {
use_html_editor('questiontext');
}
print_footer($course);
?>
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