public function __construct($submiturl, $question, $category, $contexts, $formeditable = true)
{
$this->regenerate = true;
$this->question = $question;
$this->qtypeobj = question_bank::get_qtype($this->question->qtype);
// Get the dataset definitions for this question.
// Coming here everytime even when using a NoSubmitButton.
// This will only set the values to the actual question database content
// which is not what we want, so this should be removed from here.
// Get priority to paramdatasets.
$this->reload = optional_param('reload', false, PARAM_BOOL);
if (!$this->reload) {
// Use database data as this is first pass
// Question->id == 0 so no stored datasets.
if (!empty($question->id)) {
$this->datasetdefs = $this->qtypeobj->get_dataset_definitions($question->id, array());
if (!empty($this->datasetdefs)) {
foreach ($this->datasetdefs as $defid => $datasetdef) {
// First get the items in case their number does not correspond to itemcount.
if (isset($datasetdef->id)) {
$this->datasetdefs[$defid]->items = $this->qtypeobj->get_database_dataset_items($datasetdef->id);
if ($this->datasetdefs[$defid]->items != '') {
$datasetdef->itemcount = count($this->datasetdefs[$defid]->items);
} else {
$datasetdef->itemcount = 0;
}
}
// Get maxnumber.
if ($this->maxnumber == -1 || $datasetdef->itemcount < $this->maxnumber) {
$this->maxnumber = $datasetdef->itemcount;
}
}
}
$i = 0;
foreach ($this->question->options->answers as $answer) {
$this->answer[$i] = $answer;
$i++;
}
$this->nonemptyanswer = $this->answer;
}
$datasettoremove = false;
$newdatasetvalues = false;
$newdataset = false;
} else {
// Handle reload to get values from the form-elements
// answers, datasetdefs and data_items. In any case the validation
// step will warn the user of any error in settings the values.
// Verification for the specific dataset values as the other parameters
// units, feeedback etc are handled elsewhere.
// Handle request buttons :
// 'analyzequestion' (Identify the wild cards {x..} present in answers).
// 'addbutton' (create new set of datatitems).
// 'updatedatasets' is handled automatically on each reload.
// The analyzequestion is done every time on reload
// to detect any new wild cards so that the current display reflects
// the mandatory (i.e. in answers) datasets.
// To implement : don't do any changes if the question is used in a quiz.
// If new datadef, new properties should erase items.
// most of the data.
$datasettoremove = false;
$newdatasetvalues = false;
$newdataset = false;
$dummyform = new stdClass();
$mandatorydatasets = array();
// Should not test on adding a new answer.
// Should test if there are already olddatasets or if the 'analyzequestion'.
// submit button has been clicked.
if (optional_param_array('datasetdef', false, PARAM_BOOL) || optional_param('analyzequestion', false, PARAM_BOOL)) {
if ($dummyform->answer = optional_param_array('answer', '', PARAM_NOTAGS)) {
// There is always at least one answer...
$fraction = optional_param_array('fraction', '', PARAM_FLOAT);
$tolerance = optional_param_array('tolerance', '', PARAM_FLOAT);
$tolerancetype = optional_param_array('tolerancetype', '', PARAM_FLOAT);
$correctanswerlength = optional_param_array('correctanswerlength', '', PARAM_INT);
$correctanswerformat = optional_param_array('correctanswerformat', '', PARAM_INT);
foreach ($dummyform->answer as $key => $answer) {
if (trim($answer) != '') {
// Just look for non-empty.
$this->answer[$key] = new stdClass();
$this->answer[$key]->answer = $answer;
$this->answer[$key]->fraction = $fraction[$key];
$this->answer[$key]->tolerance = $tolerance[$key];
$this->answer[$key]->tolerancetype = $tolerancetype[$key];
$this->answer[$key]->correctanswerlength = $correctanswerlength[$key];
$this->answer[$key]->correctanswerformat = $correctanswerformat[$key];
$this->nonemptyanswer[] = $this->answer[$key];
$mandatorydatasets += $this->qtypeobj->find_dataset_names($answer);
}
}
}
$this->datasetdefs = array();
// Rebuild datasetdefs from old values.
if ($olddef = optional_param_array('datasetdef', '', PARAM_RAW)) {
$calcmin = optional_param_array('calcmin', '', PARAM_FLOAT);
$calclength = optional_param_array('calclength', '', PARAM_INT);
$calcmax = optional_param_array('calcmax', '', PARAM_FLOAT);
$oldoptions = optional_param_array('defoptions', '', PARAM_RAW);
$newdatasetvalues = false;
$sizeofolddef = count($olddef);
for ($key = 1; $key <= $sizeofolddef; $key++) {
$def = $olddef[$key];
$this->datasetdefs[$def] = new stdClass();
$this->datasetdefs[$def]->type = 1;
$this->datasetdefs[$def]->category = 0;
$this->datasetdefs[$def]->options = $oldoptions[$key];
$this->datasetdefs[$def]->calcmin = $calcmin[$key];
$this->datasetdefs[$def]->calcmax = $calcmax[$key];
$this->datasetdefs[$def]->calclength = $calclength[$key];
// Then compare with new values.
if (preg_match('~^(uniform|loguniform):([^:]*):([^:]*):([0-9]*)$~', $this->datasetdefs[$def]->options, $regs)) {
if ($this->datasetdefs[$def]->calcmin != $regs[2] || $this->datasetdefs[$def]->calcmax != $regs[3] || $this->datasetdefs[$def]->calclength != $regs[4]) {
$newdatasetvalues = true;
}
}
$this->datasetdefs[$def]->options = "uniform:" . $this->datasetdefs[$def]->calcmin . ":" . $this->datasetdefs[$def]->calcmax . ":" . $this->datasetdefs[$def]->calclength;
}
}
// Detect new datasets.
$newdataset = false;
foreach ($mandatorydatasets as $datasetname) {
if (!isset($this->datasetdefs["1-0-{$datasetname}"])) {
$key = "1-0-{$datasetname}";
$this->datasetdefs[$key] = new stdClass();
$this->datasetdefs[$key]->type = 1;
$this->datasetdefs[$key]->category = 0;
$this->datasetdefs[$key]->name = $datasetname;
$this->datasetdefs[$key]->options = "uniform:1.0:10.0:1";
$newdataset = true;
} else {
$this->datasetdefs["1-0-{$datasetname}"]->name = $datasetname;
}
}
// Remove obsolete datasets.
$datasettoremove = false;
foreach ($this->datasetdefs as $defkey => $datasetdef) {
if (!isset($datasetdef->name)) {
$datasettoremove = true;
unset($this->datasetdefs[$defkey]);
}
}
}
}
// Handle reload.
// Create items if $newdataset and noofitems > 0 and !$newdatasetvalues.
// Eliminate any items if $newdatasetvalues.
// Eliminate any items if $datasettoremove, $newdataset, $newdatasetvalues.
if ($datasettoremove || $newdataset || $newdatasetvalues) {
foreach ($this->datasetdefs as $defkey => $datasetdef) {
$datasetdef->itemcount = 0;
unset($datasetdef->items);
}
}
$maxnumber = -1;
if (optional_param('addbutton', false, PARAM_BOOL)) {
$maxnumber = optional_param('selectadd', '', PARAM_INT);
// FIXME: sloppy coding.
foreach ($this->datasetdefs as $defid => $datasetdef) {
$datasetdef->itemcount = $maxnumber;
unset($datasetdef->items);
for ($numberadded = 1; $numberadded <= $maxnumber; $numberadded++) {
$datasetitem = new stdClass();
$datasetitem->itemnumber = $numberadded;
$datasetitem->id = 0;
$datasetitem->value = $this->qtypeobj->generate_dataset_item($datasetdef->options);
$this->datasetdefs[$defid]->items[$numberadded] = $datasetitem;
}
}
$this->maxnumber = $maxnumber;
} else {
// Handle reload dataset items.
if (optional_param_array('definition', '', PARAM_NOTAGS) && !($datasettoremove || $newdataset || $newdatasetvalues)) {
$i = 1;
$fromformdefinition = optional_param_array('definition', '', PARAM_NOTAGS);
$fromformnumber = optional_param_array('number', '', PARAM_RAW);
// This parameter will be validated in the form.
$fromformitemid = optional_param_array('itemid', '', PARAM_INT);
ksort($fromformdefinition);
foreach ($fromformdefinition as $key => $defid) {
$addeditem = new stdClass();
$addeditem->id = $fromformitemid[$i];
$addeditem->value = $fromformnumber[$i];
$addeditem->itemnumber = ceil($i / count($this->datasetdefs));
$this->datasetdefs[$defid]->items[$addeditem->itemnumber] = $addeditem;
$this->datasetdefs[$defid]->itemcount = $i;
$i++;
}
}
if (isset($addeditem->itemnumber) && $this->maxnumber < $addeditem->itemnumber) {
$this->maxnumber = $addeditem->itemnumber;
if (!empty($this->datasetdefs)) {
foreach ($this->datasetdefs as $datasetdef) {
$datasetdef->itemcount = $this->maxnumber;
}
}
}
}
parent::__construct($submiturl, $question, $category, $contexts, $formeditable);
}
function question_edit_calculatedsimple_form(&$submiturl, &$question, &$category, &$contexts, $formeditable = true)
{
global $QTYPES, $SESSION, $CFG, $DB;
$this->regenerate = true;
$this->question = $question;
$this->qtypeobj =& $QTYPES[$this->question->qtype];
//get the dataset definitions for this question
//coming here everytime even when using a NoSubmitButton
//so this will only set the values to the actual question database content which is not what we want
//so this should be removed from here
// get priority to paramdatasets
if ("1" == optional_param('reload', '', PARAM_INT)) {
$this->reload = true;
} else {
$this->reload = false;
}
if (!$this->reload) {
// use database data as this is first pass
// question->id == 0 so no stored datasets
// else get datasets
if (!empty($question->id)) {
if (empty($question->options)) {
$this->get_question_options($question);
}
$this->datasetdefs = $this->qtypeobj->get_dataset_definitions($question->id, array());
if (!empty($this->datasetdefs)) {
foreach ($this->datasetdefs as $defid => $datasetdef) {
// first get the items in case their number does not correspond to itemcount
if (isset($datasetdef->id)) {
$this->datasetdefs[$defid]->items = $this->qtypeobj->get_database_dataset_items($datasetdef->id);
if ($this->datasetdefs[$defid]->items != '') {
$datasetdef->itemcount = count($this->datasetdefs[$defid]->items);
} else {
$datasetdef->itemcount = 0;
}
}
// Get maxnumber
if ($this->maxnumber == -1 || $datasetdef->itemcount < $this->maxnumber) {
$this->maxnumber = $datasetdef->itemcount;
}
}
}
$i = 0;
foreach ($this->question->options->answers as $answer) {
$this->answer[$i] = $answer;
$i++;
}
$this->nonemptyanswer = $this->answer;
}
$datasettoremove = false;
$newdatasetvalues = false;
$newdataset = false;
} else {
// handle reload to get values from the form-elements
// answers, datasetdefs and data_items
// verify for the specific dataset values as the other parameters
// unints, feeedback etc are handled elsewhere
// handle request buttons :
// 'analyzequestion' (Identify the wild cards {x..} present in answers)
// 'addbutton' (create new set of datatitems)
// 'updatedatasets' is handled automatically on each reload
// The analyzequestion is done every time on reload
// to detect any new wild cards so that the current display reflects
// the mandatory (i.e. in answers) datasets
// to implement : don't do any changes if the question is used in a quiz.
// If new datadef, new properties should erase items.
$dummyform = new stdClass();
$mandatorydatasets = array();
if ($dummyform->answer = optional_param('answer')) {
// there is always at least one answer...
$fraction = optional_param('fraction');
$feedback = optional_param('feedback');
$tolerance = optional_param('tolerance');
$tolerancetype = optional_param('tolerancetype');
$correctanswerlength = optional_param('correctanswerlength');
$correctanswerformat = optional_param('correctanswerformat');
foreach ($dummyform->answer as $key => $answer) {
if (trim($answer) != '') {
// just look for non-empty
$this->answer[$key] = new stdClass();
$this->answer[$key]->answer = $answer;
$this->answer[$key]->fraction = $fraction[$key];
$this->answer[$key]->feedback = $feedback[$key];
$this->answer[$key]->tolerance = $tolerance[$key];
$this->answer[$key]->tolerancetype = $tolerancetype[$key];
$this->answer[$key]->correctanswerlength = $correctanswerlength[$key];
$this->answer[$key]->correctanswerformat = $correctanswerformat[$key];
$this->nonemptyanswer[] = $this->answer[$key];
$mandatorydatasets += $this->qtypeobj->find_dataset_names($answer);
}
}
}
$this->datasetdefs = array();
// rebuild datasetdefs from old values
$olddef = optional_param('datasetdef');
$oldoptions = optional_param('defoptions');
$calcmin = optional_param('calcmin');
$calclength = optional_param('calclength');
$calcmax = optional_param('calcmax');
$newdatasetvalues = false;
for ($key = 1; $key <= sizeof($olddef); $key++) {
$def = $olddef[$key];
$this->datasetdefs[$def] = new stdClass();
$this->datasetdefs[$def]->type = 1;
$this->datasetdefs[$def]->category = 0;
// $this->datasets[$key]->name = $datasetname;
$this->datasetdefs[$def]->options = $oldoptions[$key];
$this->datasetdefs[$def]->calcmin = $calcmin[$key];
$this->datasetdefs[$def]->calcmax = $calcmax[$key];
$this->datasetdefs[$def]->calclength = $calclength[$key];
//then compare with new values
if (preg_match('~^(uniform|loguniform):([^:]*):([^:]*):([0-9]*)$~', $this->datasetdefs[$def]->options, $regs)) {
if ($this->datasetdefs[$def]->calcmin != $regs[2] || $this->datasetdefs[$def]->calcmax != $regs[3] || $this->datasetdefs[$def]->calclength != $regs[4]) {
$newdatasetvalues = true;
}
}
$this->datasetdefs[$def]->options = "uniform:" . $this->datasetdefs[$def]->calcmin . ":" . $this->datasetdefs[$def]->calcmax . ":" . $this->datasetdefs[$def]->calclength;
}
// detect new datasets
$newdataset = false;
foreach ($mandatorydatasets as $datasetname) {
if (!isset($this->datasetdefs["1-0-{$datasetname}"])) {
$key = "1-0-{$datasetname}";
$this->datasetdefs[$key] = new stdClass();
//"1-0-$datasetname";
$this->datasetdefs[$key]->type = 1;
$this->datasetdefs[$key]->category = 0;
$this->datasetdefs[$key]->name = $datasetname;
$this->datasetdefs[$key]->options = "uniform:1.0:10.0:1";
$newdataset = true;
} else {
$this->datasetdefs["1-0-{$datasetname}"]->name = $datasetname;
}
}
// remove obsolete datasets
$datasettoremove = false;
foreach ($this->datasetdefs as $defkey => $datasetdef) {
if (!isset($datasetdef->name)) {
$datasettoremove = true;
unset($this->datasetdefs[$defkey]);
}
}
}
// handle reload
// create items if $newdataset and noofitems > 0 and !$newdatasetvalues
// eliminate any items if $newdatasetvalues
// eliminate any items if $datasettoremove, $newdataset, $newdatasetvalues
if ($datasettoremove || $newdataset || $newdatasetvalues) {
foreach ($this->datasetdefs as $defkey => $datasetdef) {
$datasetdef->itemcount = 0;
unset($datasetdef->items);
}
}
$maxnumber = -1;
if ("" != optional_param('addbutton')) {
$maxnumber = optional_param('selectadd');
foreach ($this->datasetdefs as $defid => $datasetdef) {
$datasetdef->itemcount = $maxnumber;
unset($datasetdef->items);
for ($numberadded = 1; $numberadded <= $maxnumber; $numberadded++) {
$datasetitem = new stdClass();
$datasetitem->itemnumber = $numberadded;
$datasetitem->id = 0;
$datasetitem->value = $this->qtypeobj->generate_dataset_item($datasetdef->options);
$this->datasetdefs[$defid]->items[$numberadded] = $datasetitem;
}
//for number added
}
// datasetsdefs end
$this->maxnumber = $maxnumber;
} else {
// Handle reload dataset items
if ("" != optional_param('definition') && !($datasettoremove || $newdataset || $newdatasetvalues)) {
$i = 1;
$fromformdefinition = optional_param('definition');
$fromformnumber = optional_param('number');
$fromformitemid = optional_param('itemid');
ksort($fromformdefinition);
foreach ($fromformdefinition as $key => $defid) {
$addeditem = new stdClass();
$addeditem->id = $fromformitemid[$i];
$addeditem->value = $fromformnumber[$i];
$addeditem->itemnumber = ceil($i / count($this->datasetdefs));
$this->datasetdefs[$defid]->items[$addeditem->itemnumber] = $addeditem;
$this->datasetdefs[$defid]->itemcount = $i;
$i++;
}
}
if (isset($addeditem->itemnumber) && $this->maxnumber < $addeditem->itemnumber) {
$this->maxnumber = $addeditem->itemnumber;
if (!empty($this->datasetdefs)) {
foreach ($this->datasetdefs as $datasetdef) {
$datasetdef->itemcount = $this->maxnumber;
}
}
}
}
parent::question_edit_form($submiturl, $question, $category, $contexts, $formeditable);
}
