Currency Convertor

Question

How Convert USD to INR ( base currency) in magento?. I tried to below code , but not working.

$amt=1000;
Mage::helper('directory')->currencyConvert($amt, 'USD', 'INR'); 

But its work on Mage::helper('directory')->currencyConvert($amt, 'INR', 'USD');

Answer 1

You cannot convert one price currency price to base currency.

because magento did not calculate base currency rate from other current rate.

Magento define a price in BASE currency which will convert using rate for other currency

Magento is calculate other price from base Currency

Please got see Mage_Directory_Model_Currency class on function

 public function convert($price, $toCurrency=null)
    {
        if (is_null($toCurrency)) {
            return $price;
        }
        elseif ($rate = $this->getRate($toCurrency)) {
            return $price*$rate;
        }

        throw new Exception(Mage::helper('directory')->__('Undefined rate from "%s-%s".', $this->getCode(), $toCurrency->getCode()));
    }

Here show that you can not get base currency from other currency

That means that you code format is

Mage::helper('directory')->currencyConvert($amt, 'baseCurrecy', 'your currency');

revise it not possible using this function

Mage::helper('directory')->currencyConvert($amt, 'your currency', 'baseCurrecy');

Answer 2

It is not possible to convert a price from current currency to base currency using Mage::helper('directory')->currencyConvert($amt, 'USD', 'INR') method because Magento doesn't find the row with "currentCurrency"=>"baseCurrency" relation in the directory_currency_rate table.

To solve this issue you can simply do a division of the price by "baseCurrency"=>"currentCurrency" rate.

How could you get "baseCurrency"=>"currentCurrency" rate and solve your issue? In this way:

// the price
$amt=1000;
// Base Currency ('INR')
$baseCurrencyCode = Mage::app()->getStore()->getBaseCurrencyCode();
// Current Currency ('USD')
$currentCurrencyCode = Mage::app()->getStore()->getCurrentCurrencyCode();

// Allowed currencies
$allowedCurrencies = Mage::getModel('directory/currency')->getConfigAllowCurrencies();
$rates = Mage::getModel('directory/currency')->getCurrencyRates($baseCurrencyCode, array_values($allowedCurrencies));
// the price converted
$amt= $amt/$rates[$currentCurrencyCode];