public function create_post_rules($product, $fee_income_acc, $saving_control_acc, $cash_account)
{
//create posting rule for deposit transaction
$posting = new Savingposting();
$posting->transaction = 'deposit';
$posting->debit_account = $cash_account;
$posting->credit_account = $saving_control_acc;
$posting->savingproduct()->associate($product);
$posting->save();
//create posting rule for withdrawal transaction
$posting = new Savingposting();
$posting->transaction = 'withdrawal';
$posting->debit_account = $saving_control_acc;
$posting->credit_account = $cash_account;
$posting->savingproduct()->associate($product);
$posting->save();
//create posting rule for charge transaction
$posting = new Savingposting();
$posting->transaction = 'charge';
$posting->debit_account = $cash_account;
$posting->credit_account = $fee_income_acc;
$posting->savingproduct()->associate($product);
$posting->save();
}
