Okay, I know its in preview, so I'm totally getting ahead of myself.
On my embedded canvas app when I envoke the function ModelDrivenFormIntegration.OpenQuickCreateForm(entityName) the quick create form for that entitiy appears. Awesome, and happy days. Except I'd really like to create a task regarding the case my canvas app is running in context of or create a contact belonging to the account my canvas app is running in context of
So in addition to passing the entityName I'd like to pass the field to populate, the value and I suppose the type of record that the value is for the polymorphic lookups. On the quick create form the coresponding field would then kindly be pre-populated for the user. In other words: no thinking required.