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From Benoit Chesneau <>
Subject Re: Addition of modify-on-document-write hooks
Date Mon, 20 Sep 2010 05:28:41 GMT
On Mon, Sep 20, 2010 at 12:34 AM, Randall Leeds <> wrote:
> On Thu, Sep 9, 2010 at 12:19, James Jackson <> wrote:
>> Hi all,
>> Moving this from the users forum, as it appears what I'm after isn't currently available.
For the security model I with to implement in a production CouchDB cluster, I would like to
be able to force a field to be written to all docs based on the user context. The _update
functionality is not what I am after as it requires the user to actually call it when writing
a document (means security could be got-around by not calling this, and setting the required
field in the passed document to something arbitrary, which would then not get caught by a
validation function), and can't modify a document which is passed to it (as far as I can tell
it can only modify existing documents, or create new ones).
> Is the rewrite handler powerful enough to force normal PUT operations
> to go through an _update function? Would this break replication? Just
> a quick, off-the-cuff thought.
A _rewrite rule can have a `method` property. So you can redirect
differently based on the request method (GET, POST, PUT, ...). So yes,
it's eventually possible to mimic the CouchDB api behind a _rewrite/ .

- benoit

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