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Dependant dropdown menu's (Forms)


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borriej

Community Member, 267 Posts

28 December 2011 at 4:09am

Edited: 28/12/2011 8:37am

Hello

How do you make a dependant dropdown menu on a Form?

i have a bookingsform:
- first dropdown menu returns a DataObject. Titles of pages can be selected.
- Now a secondary dropdown menu must be filled with possible dates/prices, which are stored in the DataObject 'DatesPrices'

How do i do this?

my first dropdown is generated by:


class Tour_Controller extends Page_Controller {

	public function getMyTours(){
		$today = date('Y-m-d');
		if($Pages = DataObject::get("Tour", "EndDate >= '$today'","StartDate", "", "" )){
			return $Pages->map('Title', 'Title', 'Please Select');
		}else{
			return array('No Tours found');
		}
	}


class Tour_Controller extends Page_Controller {

	function BookingsForm() {
		$fields = new FieldSet(
			   
			new DropdownField(
				'TourProgram',
				'Select a trip',
				 $this->getMyTours()
			),	

Dates and prices are stored in:


class DatesPrice extends DataObject {
	public static $db = array(
		'Periode' => 'Text',
		'Price' => 'Int',
		'Comment' => 'Text',
		'SingleSupplement' => 'Int',
		'Description' => 'HTMLText',
	);
	public static $has_one = array (
		'Tour' => 'Tour'
	);
	public function getCMSFields_forPopup() {
		$fields = new FieldSet();
		$fields->push(new TextField('Periode'));
		$fields->push(new TextField('Price'));
		$fields->push(new TextField('Comment'));
		$fields->push(new TextField('SingleSupplement'));
		$fields->push(new SimpleTinyMCEField('Description'));
		
		return $fields;
	}
}

i need the second form to check which value is selected on the first dropdown.. and then use that as some kind of filter on dataobject DatesPrices, but how?