[Phpwebsite-developers] Revert code

[Matthew M. <ma...@tu...>]

Hello all,

Long time no write. I have a question that Steven and I have been
discussing which could use some feedback.

There is a class in 0.9.4 called Backup. It facilitates restoring an
item of content to a previous version. The question we have is - what
then?

A quick overview. When you call Backup::save(), a backup of your data is
placed in a (almost) duplicate table. The backup system limits the
backups to 5 right now - 4 previous edits plus the current copy.
Remember, the last letter on the list is the current version.

In each scenario, we have 5 copies, A B C D and E, with 'E' being the
current version. We want to replace the current version (E) with a
previous version (C).

Scenario 1
C is made the current version (becoming 'F'). D and E are removed since
they are after the reversion. The new list is: A B F

Scenario 2
C is made the current version (becoming 'F'). The previous version (E)
is added to the reversion list. Our new list is: A B D E F


Scenario 1 is more like how your standard 'undo' command works. However,
we are worried that people will expect the last version to be saved even
if we are going to an older version.

Comments welcome.
Thanks,
Matt

-- 
Matthew McNaney
Internet Systems Architect
Electronic Student Services
Appalachian State University
Phone: 828-262-6493
http://phpwebsite.appstate.edu
http://ess.appstate.edu