What I want to do:

Hide a page in a form view if its not the users own record, or the user is not in a given group.

What I've tried:

Using attrs to set the page invisble.

The Problem:

uid is not available in attrs.(?)

Question:

Can I use the eval expression to evaluate True or False for the invisible attribute directly, instead of using attrs?

What other suggestions?

Using groups would work to hide the page for groups, but this way, I can't make the page visible for the owner of the record. (?)

Thanks.