Setting advanced item level permissions...

Question

I would like to know if this is somehow possible: Let's say I have a list with a content type that contains a user field in the format of DOMAIN\USER. I want to setup a new permission level that assigns custom priviledges to all items in this list based on this field if the current user logged in == user field in the item. Is this possible? I want to get away from setting item level permissions for each item if I have hundreds of them - also something wierd keeps happening and I keep losing these item level permissions that I assigned to a single user. Also, each item in the list represents a person and the content type is a "person".

Answer 1

If your really eager to do this I think you can by making a custom membership provider with some configuration.

pseudo-code...

if(ThingImTryingToAccess == ListImSecuring)

{

    // SPQuery as admin and give the yay/nay based on some field value.
}

else

{

    // Use OOTB SharePoint security methods
}

This is ambitious. Good Luck

Answer 2

Allow me to refine my answer because I actually tried it today. You want a Custom RoleProvider instead of a custom MembershipProvider. Oops. The real problem I think you will have is that you will still need Item level permissions; you would just set your custom role to have the item level permission instead of a sharepoint user or group. So the benefit is questionable.