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From Mark Hahn <>
Subject Re: change notifications question
Date Thu, 07 Apr 2011 18:19:48 GMT
You are not even guaranteed the old version will be there.  You need
to build history into your app.

On Thu, Apr 7, 2011 at 10:43 AM, Thomas Vander Stichele
<> wrote:
> Hi everyone,
> I am adding change notification support to paisley (twisted library for
> couchdb) and am writing a simple client that sends GUI notifications for
> changed documents.
> While doing so, I was wondering if anyone ever considered having change
> notifications not only notify the new rev id, but also the old one ?
> In my use case, after receiving a notification of a change, I now have
> to request the new version, then request what I think is the previous
> version (which I will have to do by asking for a list of revision id's -
> since I don't know the previous revision) and then figuring out what was
> the last one that wasn't mentioned in the change notification.
> These are three separate requests to be able to figure out changes in a
> way to present them to the user (for example - was the task
> added/completed/deleted ?)
> Any thoughts?
> Thomas

Mark Hahn
Website Manager

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