Change currency according to customer group

Question

My base currency is USD. I want to change according to customer-group i.e. If customer group "Retailer" the currency =EUR.

So far I managed to get customer's group code:

$groupId = Mage::getSingleton('customer/session')->getCustomerGroupId();
$customer = Mage::getModel('customer/group')->load($groupId)->getCustomerGroupCode();

if($customer == 'Retailer') { /* Change currency to EUR */ }

Any help would be appreciated!

Answer 1

You can use an observer and set currency is below way. You just have to set your customer group ID here: if ($groupId == 1)

app/code/local/My/Module/etc/config.xml

<?xml version="1.0" encoding="UTF-8"?>
<config>
    <modules>
        <My_Module>
            <version>0.0.1</version>
        </My_Module>
    </modules>
    <global>
        <models>
            <my_module>
                <class>My_Module_Model</class>
            </my_module>
        </models>
    </global>
    <frontend>
        <events>
            <controller_action_predispatch>
                <observers>
                    <change_currency>
                        <class>my_module/observer</class>
                        <method>changeCurrency</method>
                    </change_currency>
                </observers>
            </controller_action_predispatch>
        </events>
    </frontend>
</config>

app/code/local/My/Module/Model/Observer.php

<?php
class My_Module_Model_Observer extends Mage_Core_Model_Observer
{
    public function changeCurrency(Varien_Event_Observer $observer)
    {
        $groupId = Mage::getSingleton('customer/session')->getCustomerGroupId();
        if ($groupId == 1) {
            Mage::app()->getStore()->setCurrentCurrencyCode('EUR');
        } else {
            Mage::app()->getStore()->setCurrentCurrencyCode('USD');
        }
    }
}