Hi,

I am used to creating a $has_many -> $has_one relationship from a Page to a DataObject, however that's not what I want this time and I am having trouble getting the Parent ID to save into the Child table. Here is the parent object:

[pre]

class Service extends DataObject { 
	
	....
	
	static $has_one = array(
		"ServiceHolder" => "ServiceHolder"		
	);

	static $has_many = array(
		"SubServices" => "SubService"
   	);

	....

	function getCMSFields_forPopup() {

		$fields = new FieldSet();
		
		$fields->push(new TextField("ServiceName", "Name of Service"));
		$fields->push(new SimpleTinyMCEField("ServiceDescription", "Description"));

		return $fields;

	}
	
}

And here is my child object:

[pre]

class SubService extends DataObject { 
	
	....
	
	static $has_one = array(
		"Service" => "Service"		
	);

	....

	function getCMSFields_forPopup() {

		$fields = new FieldSet();
		
		$fields->push(new TextField("SubServiceName", "Name of Service"));
		$fields->push(new SimpleTinyMCEField("SubServiceDescription", "Description"));
		
		$services = DataObject::get("Service");
		$services_dropdown = new DropdownField("Service", "Parent Service", $services->toDropDownMap("ServiceID","ServiceName"));
		$fields->push($services_dropdown);

		return $fields;

	}
	
}

What I am trying to do here is to allow the user to choose which Service each SubService belongs to. When you create/edit a SubService, I want to be able to choose the Parent Service from a dropdown list. However the result of this code is such that I see a dropdown which contains only one Service -- the first one -- that which has an ID of 0.

Firstly, why will my dropdown not show all the Services? What am I doing wrong? How do I save the value of the selected Parent into the child object?

Thank you in advance,
Garrett

$services_dropdown = new DropdownField("Service", "Parent Service", $services->toDropDownMap("ServiceID","ServiceName"));

That 'Service' $name parameter has to be ServiceID

$services_dropdown = new DropdownField("ServiceID", "Parent Service", $services->map());