[TYPO3-commerce] Templated forms for checkout

[robelix]

At the moment checkout-forms (addresses and payment) are just "sticked
together" - each single input is built from template, but not the whole
form. For example it's not possible to have zip and city inputs in one Line.


So I'm thinking about:

extending the getInputForm() function in pi3 to check for a formTemplate
(file and subpart-marker) property in $config - if it's set build the
form with template, if not do the same thing as now.



For Payment-Objects the same Form-Builder is used, the config is
provided by the object:

$paymentConfig['sourceFields.'] =
$paymentObj->getAdditonalFieldsConfig($this);


By Asking the PaymentObj for a template - like:


if (method_exists($paymentObj, 'getFormTemplate'))	{
	$paymentConfig['formTemplate.'] = $paymentObj->getFormTemplate($this);
}


So it should be possible to add this feature to payment objects, too -
while keeping compatibility to existing ones.



Any Comments, Other/Better/completely diffrent ideas?