/**
* @desc Deletes question from the question_webwork table
* @param integer $questionid The question being deleted
* @return boolean to indicate success of failure.
*/
function delete_question($questionid)
{
try {
$wwquestion = WebworkQuestionFactory::LoadByParent($questionid);
$wwquestion->remove();
} catch (Exception $e) {
print_error('error_question_id_no_child', 'qtype_webwork');
}
return true;
}
/**
* @desc Validates that the question is without PG errors as mandated by codecheck level.
* @param $data array The form data that needs to be validated.
* @return array An array of errors indexed by field.
*/
function validation($data)
{
//init
$errors = array();
//build dataobject
$dataobject = new stdClass();
$dataobject->code = $data['code'];
$dataobject->codecheck = $data['codecheck'];
//attempt to find an ID (if updating)
if (isset($this->question->webwork)) {
$dataobject->id = $this->question->webwork->getId();
}
//try and build the question object
try {
if (isset($this->_form->_submitValues['makecopy'])) {
$wwquestion = WebworkQuestionFactory::CreateFormCopy($dataobject);
} else {
if (isset($dataobject->id)) {
$wwquestion = WebworkQuestionFactory::CreateFormUpdate($dataobject);
} else {
$wwquestion = WebworkQuestionFactory::CreateFormNew($dataobject);
}
}
WebworkQuestionFactory::Store($data['storekey'], $wwquestion);
} catch (Exception $e) {
$errors['code'] = $e->getMessage();
}
return $errors;
}
public static function CreateFromForm($formdata)
{
WebworkQuestionFactory::ParseFormData($formdata);
$output = WebworkQuestionFactory::CodeCheck($formdata->code);
$formdata->grading = $output->grading;
$wwquestion = new WebworkQuestion($formdata, $output->derivation);
return $wwquestion;
}
/**
* @desc Takes the data in the questions array and creates derivations for it. Returns the questions that passed codecheck
* @param array $data The questions to be added.
* @return array The questions that passed the codecheck.
*/
function readquestions($data)
{
global $COURSE;
$courseid = $COURSE->id;
echo "<h2>Import Stage</h2>";
flush();
$correctdata = array();
$errors = array();
$currentcategoryid = null;
//this is where we load question requests
$start = time();
$count = 1;
$total = count($this->questions);
echo "<h3>Generation</h3>";
echo "We have {$total} questions and categories to generate!<br>";
flush();
for ($i = 0; $i < count($this->questions); $i++) {
$question = $this->questions[$i];
if (isset($question->qtype) && $question->qtype == 'webwork') {
echo "Question #{$count} ({$question->name}) ... ";
flush();
$qstart = time();
try {
$wwquestion = WebworkQuestionFactory::Import($question->code);
if (isset($currentcategoryid)) {
$previousid = get_field('question', 'id', 'category', $currentcategoryid, 'name', $question->name);
if ($previousid) {
$previouscode = get_field('question_webwork', 'code', 'question', $previousid);
if ($previouscode == $question->code) {
echo "Detected Duplicate<br>";
throw new Exception('Ignoring: Question already exists.');
} else {
set_field('question', 'name', $question->name . '_old', 'id', $previousid);
}
}
}
$qend = time();
$qdiff = $qend - $qstart;
echo "Generated ~({$qdiff} secs)<br>";
$question->webwork = $wwquestion;
$question->questiontext = addslashes(base64_decode($wwquestion->render(0, array(), 0)));
$question->questiontextformat = 1;
unset($question->code);
unset($question->codecheck);
unset($question->seed);
array_push($correctdata, $question);
} catch (Exception $e) {
$errors[$question->name] = $e->getMessage();
}
$count++;
} elseif (isset($question->qtype) && $question->qtype == 'category') {
//category addition
echo "<h3>Category Added {$question->name}</h3>";
flush();
//var_dump($question);
$question->category = $question->name;
$catarray = explode('/', $question->name);
$parentid = null;
foreach ($catarray as $catname) {
if (!isset($parentid)) {
$parentid = get_field('question_categories', 'id', 'name', $catname, 'course', $courseid);
} else {
$parentid = get_field('question_categories', 'id', 'name', $catname, 'course', $courseid, 'parent', $parentid);
}
}
$currentcategoryid = $parentid;
array_push($correctdata, $question);
} else {
echo "Unused File<br>";
flush();
}
}
$end = time();
$diff = $end - $start;
echo "<br><b>Finished Generation, total time ~({$diff} secs)</b><br><br>";
flush();
if (count($errors) > 0) {
echo "<h3>Errors</h3>";
echo "<br>Found " . count($errors) . " Question(s) with Errors:<br>";
foreach ($errors as $name => $error) {
echo "Name: " . $name . "<br>";
echo "Error:" . $error . "<br><br>";
}
}
echo "<h2>Import Stage</h2>";
echo "<h3>Questions and Categories</h3>";
echo "Importing " . count($correctdata) . " Questions and Categories<br>";
flush();
return $correctdata;
}
