Translating customer prefixes in Magento - magento

Question

I'm trying to translate the prefix like 'mr.' and 'mrs.' those are set in: System >> Configuration >> Customer Configuration >> Prefix Dropdown Options
I need it in English, Dutch and German. Each language is a separate storeview.
I've added the translation to multiple .csv files like the themes translate.csv and the Mage_Core.csv
The default <?php echo $this->__($prefix) ?> works on the frontend like the checkout. But in the backend and emails it isn't translated.
Any way to translate those?

Answer 1

I found two ways to fix this.
remove the build in prefix and add a new one with custom prefixes.
overrule the Mage_Customer_Helper_Data class and it's getNamePrefixOptions method.
I used Nr2
NR 1: is more work, you will need to update tempaltes. But it is easier to manage for a customer if needs to ad a new translation.
NR2: You can add more prefix values in the config. Then in the class make a switch which to use in which store/language. Adding a new language will probably need to add more code the the class.
What I used to overrule the getNamePrefixOptions
public function getNamePrefixOptions($store = null)
{
$pre_val = $this->_prepareNamePrefixSuffixOptions(
Mage::helper('customer/address')->getConfig('prefix_options', $store)
);
// Show all prefixes in the admin
if (Mage::app()->getStore()->isAdmin()) {
return $pre_val;
}
// Transform array keys to integers
$pre_val = array_values( $pre_val );
$lang_code = Mage::app()->getLocale()->getDefaultLocale();
$new_prefixes_values = array();
// Add language codes here, and add their prefix key's, count starts at 0
switch ( $lang_code ) {
case "nl_NL":
// Set key the same as the value, that's how Magetnto gives it at first
$new_prefixes_values = array( $pre_val[0] => $pre_val[0], $pre_val[1] => $pre_val[1]);
break;
case "de_DE":
$new_prefixes_values = array( $pre_val[2] => $pre_val[2], $pre_val[3] => $pre_val[3]);
break;
default: // other languages
$new_prefixes_values = array( $pre_val[0] => $pre_val[0], $pre_val[1] => $pre_val[1]);
break;
}
return $new_prefixes_values;
}
What I filled in the Prefix Dropdown Options setting: Dhr.;Mevr.;Herr;Frau
It is a bit hard coded but works and allows you to change the values