Got a question here that's stumped me.

My LocationDataExtension adds a some fields, namely address, longitude and latitude.

It applies to a number of DataObjects, however the additional CMS Fields don't show if I'm not using the inherited CMS Fields, via parent::getCMSFields.

Since a number of the objects it applies to are quite gigantic, I've used $fields = new FieldList(new TabSet('Root')); to simplify the form building (meaning I don't have to remove all the fields manually), but it seems fields added by DataExtensions won't be included this way.

My Questions:

Is there a way to get all fields that should be added to a DataObject via extensions and add them separately - avoiding the use of parent::getCMSFields()?

Is there perhaps a way to turn form scaffolding off on a per instance basis - allowing me to use parent::getCMSFields which would return no scaffolded fields? Or a way to remove the default scaffolded fields?

Thanks,
Sam

The answer to this (thanks to kinglozzer on the IRC) is:

$fields = new FieldList(new TabSet('Root'));

//add your fields as normal, for example
$fields->addFieldsToTab('Root.Main', array(
	new TextField('Title'),
	$exterior_image = new UploadField('ExteriorImage', 'Exterior image')
));
$exterior_image ->setFolderName('external_images');


//magic bit

$this->extend('updateCMSFields', $fields);
return $fields;

So, this allows you to not use the inherited/scaffolded fields provided by parent::getCMSFields(), but also include fields added by any applicable DataExtensions.

Super!