Region Shipping Modifier

RegionShippingModifier.php

<?php

class RegionShippingModifier extends OrderModifier{
	
	//TODO: allow defining regions / prices with databobjects in SiteConfig
	
	static $db = array(
		'Region' => 'Varchar'
	);
	
	static $regionarray = null; // array of region - price
	
	static function set_region_prices(array $prices){
		self::$regionarray = $prices;				
	}
	
	static function get_region_prices(){
		return self::$regionarray;
	}
	
	
	static function getRegionList () {
		$options = array();
		foreach(self::get_region_prices() as $region => $price){
			$options[$region] = $region.": $".number_format($price, 2, '.', '');
		}
		return $options;
	}

	
	function TableTitle() {
		$region = ($this->getreg()) ? " - ".$this->getreg() : "";
		return 'Delivery'.$region;
	}
	
	protected function getreg(){
		$region = $this->Region;
		if(!$region && $mem = Member::currentUser()){
			$region = $mem->Region;
		}
		return $region;
	} 
		
	function LiveAmount(){
		$region = $this->getreg();
		
		if(self::$regionarray && count(self::$regionarray) > 0){
			if(isset(self::$regionarray[$region])){
				return self::$regionarray[$region];
			}
		}
		if(isset(self::$regionarray['default'])){
			return self::$regionarray['default'];
		}
		return 0;
	}	
	
	function ShowInTable() {
		return $this->Amount();
	}
	
	static function show_form() {
		return true;
	}
	
	static function get_form($controller) {
		
		$fields = new FieldSet();
		$regionList = self::getRegionList();
		$fields->push($regionField = new DropdownField('Region','Delivery Region',$regionList));
		$validator = null;

		$actions = new FieldSet(
			new FormAction('processRegionShippingOrderModifier', 'Update shipping region')
		);

		return new RegionShippingModifier_Form($controller, 'RegionShippingModifierForm', $fields, $actions, $validator);
	}

	function setRegion($region){
		$this->setField('Region', $region);
		$this->Amount = $this->LiveAmount();
		$this->write();
	}
	
}


class RegionShippingModifier_Form extends OrderModifierForm {

	function processRegionShippingOrderModifier($data, $form) {

		$order = ShoppingCart::current_order();
		$modifiers = $order->Modifiers();
		foreach($modifiers as $modifier) {
			
			if ($modifier instanceof RegionShippingModifier) {
				$modifier->Region = $data['Region'];
			}
		}
		return $this->redirect("success","Region changed successfully");
	}
	
}

?>