Cannot define class based rule

[mattupstate]

I see in the code that the behavior when the subject is a class instance the condition always returns True. I want a specific type of user to be able to CREATE instances of a resource/model but others to not be able to. For example:

they.can(
    READ, Model,
    lambda r: is_member(r) or is_staff(r))

they.can(
    EDIT, Model,
    lambda r: is_member(r) or is_staff(r))

they.can(
    (CREATE, DELETE), Model,
    lambda r: is_staff(r))

I only want "staff" to be able to CREATE and DELETE instances of the Model. However, there does not seem to be a way to do this. The last rule's condition function is never called. What am I not understanding?

[alexcc4]

Meet it, too.
It seems that this repo is not maintained by anyone. No any update.

[cadiven]

I think so.

Found another repo: https://github.com/cocoakekeyu/cancan