ajshort/silverstripe-gridfieldextensions — pull request #40 by brokemeisteratwork (2013-12-05 11:06:33+00:00)
Title: GridFieldAddNewMultiClass: Make relation property available in CreationForm

Hi,

Normally the relation of the DataObject is stored after the DataObject is written the first time.

With this patch the default value of your relation is populated to the create form, before it's created.
=> $this->YourHasManyRelation() works in getCMSFields()

Cheers,

Malte