/**
* Loads the model specified by $id and prepares some data structures.
*
* @param \netis\crud\db\ActiveRecord|IStateful $model
*
* @return array contains values, in order: $stateChange(array), $sourceState(mixed)
*/
public function getTransition($model)
{
$stateAttribute = $model->stateAttributeName;
$stateChanges = $model->getTransitionsGroupedBySource();
$sourceState = $model->{$stateAttribute};
if (!isset($stateChanges[$sourceState])) {
$stateChange = ['state' => null, 'targets' => []];
} else {
$stateChange = $stateChanges[$sourceState];
if (isset($stateChange['targets'][$this->targetState])) {
$stateChange['state'] = $stateChange['targets'][$this->targetState];
}
}
return [$stateChange, $sourceState];
}
