TYPO3.Flow

In some projects you might want to allow objects with an unknown amount of sub objects like a catalog with products with images, tierprices and colorconfigurations. Imagine a products form with x rows and a <Add row> button at the bottom that dynamically creates new empty rows with an increased index so you can add as many products as you want. In my case it's even quite a lot more complex.

So... something like this is needed

(I)
$this->arguments['newCatalog']->getPropertyMappingConfiguration()->allowCreationForSubProperty('products.[n]');
$this->arguments['newCatalog']->getPropertyMappingConfiguration()->allowCreationForSubProperty('products.[n].tierprices');
$this->arguments['newCatalog']->getPropertyMappingConfiguration()->allowCreationForSubProperty('products.[n].tierprices.[n]');
$this->arguments['newCatalog']->getPropertyMappingConfiguration()->allowCreationForSubProperty('products.[n].tierprices.[n].price');


instead of

(II)
for($i = 0 ; $i < $very_big_number ; $i++){
for($j = 0 ; $j < $very_big_number ; $j++){
$this->arguments['newCatalog']->getPropertyMappingConfiguration()->allowCreationForSubProperty("products.$i");
$this->arguments['newCatalog']->getPropertyMappingConfiguration()->allowCreationForSubProperty("products.$i.tierprices");
$this->arguments['newCatalog']->getPropertyMappingConfiguration()->allowCreationForSubProperty("products.$i.tierprices.$j");
$this->arguments['newCatalog']->getPropertyMappingConfiguration()->allowCreationForSubProperty("products.$i.tierprices.$j.price");
}
}


and also this should be possible

(III)
$this->arguments['newCatalog']->getPropertyMappingConfiguration()->getConfigurationFor('products')->allowProperties('[n]');
$this->arguments['newCatalog']->getPropertyMappingConfiguration()->getConfigurationFor('products')->getConfigurationFor('[n]')->allowProperties('tierprices');
$this->arguments['newCatalog']->getPropertyMappingConfiguration()->getConfigurationFor('products')->getConfigurationFor('[n]')->getConfigurationFor('tierprices')->allowProperties('[n]');
$this->arguments['newCatalog']->getPropertyMappingConfiguration()->getConfigurationFor('products')->getConfigurationFor('[n]')->getConfigurationFor('tierprices')->getConfigurationFor('[n]')->allowProperties('price');


of course it would be handy to have the allowProperties auto-created by a special renderTrustedPropertiesField() method.
I could imagine a view helper like this

(IV)
<f:trustedUnknownAmount preRenderAmount="3" iterator="n">
<f:trustedUnknownAmount preRenderAmount="2" iterator="m">
<f:form.textfield property="products.{n}.tierprices.{m}.name" />
</f:trustedUnknownAmount>
</f:trustedUnknownAmount>


or at least have a alternative short syntax for (III)