cakephp_error_msg.php

<?php

public function saveSomethig($data){
  $datasource = $this->getDataSource();
  $datasource->begin();
  if(!$this-Model1->save($data)){
    $datasource->rollback()
    return false;
  }
  if(!$this-Model2->save($data)){
    datasource->rollback();
    return false;
  }
  
  $datasource->commit();
  return true;
}