session variables

[Guest]

My application allows each user to checkout one item at a time. This is enforced via session.item_ID, which can hold only one item at a time. Is there a way a session can access item_ID of all other concurrent sessions? Then I could make sure that a user doesn’t checkout an item that a different user has already checked out.

Thank you.

[Grizzly9279 · Accepted solution]

This is not possible (by design), for security reasons.

Alternatively, you could keep a record of which item_id's are currently "checked out" in the application scope. The application scope is shared amongst all users on the server. Any time a user checks out an item and adds it to their session, you could keep a record of that in the application scope. ( I would probably store a STRUCT that has item_ids as keys) Once the user releases the item (or perhaps after a timeout period), you could remove that item from the application scope.

If you're in a clustered CF environment, you'll probably need to use a database table instead, but at a high level...using the very same approach.

[Guest]

Thanks Grizzly. The design for security makes sense. I will implement item checkout in database as you suggested. And I thought I had discovered an easier way 🙂