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DataObjectManager Module
SilverStripe Forums » DataObjectManager Module » $has_one / $has_many DataObject to DataObject
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$has_one / $has_many DataObject to DataObject
11 April 2012 at 1:26am
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;
}
}
[/pre]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;
}
}
[/pre]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 -
Re: $has_one / $has_many DataObject to DataObject
11 April 2012 at 7:03pm
$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());
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