silverstripe-framework/forms/CountryDropdownField.php

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<?php
/**
* A simple extension to dropdown field, pre-configured to list countries.
* It will default to the country of the current visiotr.
* @package forms
* @subpackage fields-relational
*/
class CountryDropdownField extends DropdownField {
protected $defaultToVisitorCountry = true;
function __construct($name, $title, $source = null, $value = "", $form=null, $emptyString="--select--") {
if(!is_array($source)) {
$source = Geoip::getCountryDropDown();
}
parent::__construct($name, $title, $source, $value, $form, $emptyString);
}
function defaultToVisitorCountry($val) {
$this->defaultToVisitorCountry = $val;
}
function Field() {
if($this->defaultToVisitorCountry && !$this->value || !isset($this->source[$this->value])) $this->value = Geoip::visitor_country();
return parent::Field();
}
}
?>