/**
* Called by $this->load() to populate data into $this->persistent->rec_data
*
* Subclasses may override this method to tune load() behavior, e.g.
* to load data lazily by field name passed in $field_or_db_row.
* Subclasses overriding this should also call parent::doLoad() since the base class
* uses it to load data from $this->m model.
*
* @param array $field_or_db_row see $this->load()
* @throws waException
*/
protected function doLoad($field_or_db_row = null)
{
// load from array?
if (is_array($field_or_db_row)) {
$fields = $this->m->getMetadata();
$nulls = array_fill_keys(array_keys($fields), null);
$this->persistent->setAll(array_intersect_key($field_or_db_row, $fields) + $nulls);
return;
}
// requested field already loaded?
if ($field_or_db_row) {
// check if can be loaded from $this->m model
if (!array_key_exists($field_or_db_row, $this->m->getMetadata())) {
return;
}
} else {
$loaded = true;
foreach ($this->m->getMetadata() as $f => $v) {
if (!$this->persistent->keyExists($f)) {
$loaded = false;
break;
}
}
if ($loaded) {
return;
}
}
// load from model
$row = $this->m->getById($this->id);
if (!$row) {
throw new waException('No record found in ' . $this->m->getTableName() . ' for id=' . $this->id, 404);
}
$this->persistent->setAll($row);
}
