/**
*
* @param mixed $row
* @param mixed $col
* @return type
*/
public function key($row, $col)
{
$row_id = is_object($row) ? $row->id : $row;
$col_id = is_object($col) ? $col->id : $col;
$multiple = $this->multiple;
return qtype_matrix_grading::cell_name($row_id, $col_id, $multiple);
}
function set_data($question)
{
$is_new = empty($question->id) || empty($question->options->rows);
if (!$is_new) {
$options = $question->options;
$question->multiple = $options->multiple ? '1' : '0';
$question->grademethod = $options->grademethod;
$question->rowshort = array();
$question->rowlong = array();
$question->rowfeedback = array();
$question->rowid = array();
foreach ($options->rows as $row) {
$question->rowshort[] = $row->shorttext;
$question->rowlong[] = $row->description;
$question->rowfeedback[] = $row->feedback;
$question->rowid[] = $row->id;
}
$question->colshort = array();
$question->collong = array();
$question->colid = array();
foreach ($options->cols as $col) {
$question->colshort[] = $col->shorttext;
$question->collong[] = $col->description;
$question->colid[] = $col->id;
}
//$question->matrix = array();
$row_index = 0;
foreach ($options->rows as $row) {
$col_index = 0;
foreach ($options->cols as $col) {
$cell_name = qtype_matrix_grading::cell_name($row_index, $col_index, $options->multiple);
$weight = $options->weights[$row->id][$col->id];
if ($options->multiple) {
$value = $weight > 0 ? 'on' : '';
$question->{$cell_name} = $value;
} else {
if ($weight > 0) {
$question->{$cell_name} = $col_index;
break;
}
}
$col_index++;
}
$row_index++;
}
}
/* set data should be called on new questions to set up course id, etc
* after setting up values for question
*/
parent::set_data($question);
}
/**
* Saves question-type specific options.
* This is called by {@link save_question()} to save the question-type specific data.
*
* @param object $question This holds the information from the editing form, it is not a standard question object.
* @return object $result->error or $result->noticeyesno or $result->notice
*/
function save_question_options($question)
{
global $DB;
//parent::save_question_options($question);
$question_id = isset($question->id) ? $question->id : false;
if (empty($question->makecopy)) {
$this->delete_question_options($question_id);
}
$transaction = $DB->start_delegated_transaction();
$matrix = (object) array('questionid' => $question->id, 'multiple' => $question->multiple, 'grademethod' => $question->grademethod, 'renderer' => 'matrix');
$matrix_id = $DB->insert_record('question_matrix', $matrix);
// rows
$rowids = array();
//mapping for indexes to db ids.
foreach ($question->rowshort as $i => $short) {
if (empty($short)) {
break;
}
$row = (object) array('matrixid' => $matrix_id, 'shorttext' => $question->rowshort[$i], 'description' => $question->rowlong[$i], 'feedback' => $question->rowfeedback[$i]);
$newid = $DB->insert_record('question_matrix_rows', $row);
$rowids[] = $newid;
}
// cols
$colids = array();
foreach ($question->colshort as $i => $short) {
if (empty($short)) {
break;
}
$col = (object) array('matrixid' => $matrix_id, 'shorttext' => $question->colshort[$i], 'description' => $question->collong[$i]);
$newid = $DB->insert_record('question_matrix_cols', $col);
$colids[] = $newid;
}
//wheights
if ($question->multiple) {
foreach ($rowids as $row_index => $row_id) {
foreach ($colids as $col_index => $col_id) {
$key = qtype_matrix_grading::cell_name($row_index, $col_index, $question->multiple);
$value = isset($question->{$key}) ? $question->{$key} : 0;
if (!is_numeric($value)) {
$value = empty($value) ? 0 : 1;
}
$weight = (object) array('rowid' => $row_id, 'colid' => $col_id, 'weight' => $value);
$DB->insert_record('question_matrix_weights', $weight);
}
}
} else {
foreach ($rowids as $row_index => $row_id) {
$key = qtype_matrix_grading::cell_name($row_index, 0, $question->multiple);
$col_index = $question->{$key};
$col_id = $colids[$col_index];
$value = 1;
$weight = (object) array('rowid' => $row_id, 'colid' => $col_id, 'weight' => $value);
$DB->insert_record('question_matrix_weights', $weight);
}
}
$transaction->allow_commit();
}
