Overriding a salesforce related list "Add" button

Questions
1

I’m trying to override the salesforce MultiAdd action for OrderItems. When I’m viewing an Order, this is the “Add Products” button on the OrderItems related list view.

So, I create my skuid page, which needs the Id of the Order as a url parameter. I have to know what the Order is to add OrderItems.

I create a Visualforce page like so:

<apex:page standardController="OrderItem"
  extensions="skuid.Redirects"
  action="{!redirect}&amp;page=AddInvoiceServices">
</apex:page>

The standardController for the vf page has to be OrderItem if this is going to be an override for an action on an OrderItems related list.

But I need to pass an Order id, not an OrderItem id… so I get this…

Id value 8012A000000ml7y is not valid for the OrderItem standard controller
Anyone have a good way around this?
2

I’m pretty sure that no matter how I have the skuid model’s set up, salesforce is going to pass the Order id with that override? But a vf page with a standardController for the OrderItem object can’t take an Order id. How can I actually do the override, then?

3

BUMP!

Surely someone has figured this out? Am I crazy?