protected function getRate($from, $to)
{
$this->currencyDao->setEntity(new \ArrayObject());
$currencyList = $this->currencyDao->getList();
$supportedFrom = false;
$supportedTo = false;
$toValue = 1;
$fromValue = 1;
if (is_int($from) && is_int($to)) {
$field = 'id';
} else {
if (is_string($from) && is_string($to)) {
$field = 'code';
} else {
throw new \Exception('Invalid argument passed to getRate()');
}
}
foreach ($currencyList as $currency) {
if (is_int($from) && is_int($to)) {
$likeFromTo = (int) $currency[$field];
} else {
$likeFromTo = $currency[$field];
}
if ($likeFromTo === $from) {
$supportedFrom = true;
$fromValue = $currency['value'];
}
if ($likeFromTo === $to) {
$supportedTo = true;
$toValue = $currency['value'];
}
if ($supportedFrom && $supportedTo) {
break;
}
}
if (!$supportedFrom) {
throw new \Exception('Unable to exchange from $from');
}
if (!$supportedTo) {
throw new \Exception('Unable to exchange to $to');
}
return $toValue / $fromValue;
}
public function __invoke()
{
$currencyDao = new Currency($this->serviceLocator, 'ArrayObject');
$currecnyList = $currencyDao->getCurrencyListForSite();
return $currecnyList;
}