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From "Paul Joseph Davis (JIRA)" <j...@apache.org>
Subject [jira] Updated: (COUCHDB-441) Finally implement pre-write-doc-edit handlers.
Date Sun, 02 Aug 2009 07:08:14 GMT

     [ https://issues.apache.org/jira/browse/COUCHDB-441?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Paul Joseph Davis updated COUCHDB-441:
--------------------------------------

    Attachment: COUCHDB-441.patch

Yep. This is a patch for _update handlers.


To use them, create a _design doc that looks like this:

{
  "_id": "_design/foo",
  "updates": {
    "mult": "function(oldDoc, newDoc, req, userCtx) {oldDoc.value = oldDoc.value * 2;}"
  }
}

And then PUT a document to this URL:

http://127.0.0.1:5984/db_name/_design/foo/_update/mult/${DOCID}

or POST a document to

http://127.0.0.1:5984/db_name/_design/foo/_update/mult

You can also pull the code from:

git://github.com/davisp/couchdb.git

If you're of the git persuasion.

Also, I realized while implementing this that it more or less enables an often sought after
ability with a small caveat. +1 beer to the person that spots that. +6 beers to the person
that sees the caveat.

Yay updates!


> Finally implement pre-write-doc-edit handlers.
> ----------------------------------------------
>
>                 Key: COUCHDB-441
>                 URL: https://issues.apache.org/jira/browse/COUCHDB-441
>             Project: CouchDB
>          Issue Type: Improvement
>          Components: HTTP Interface
>    Affects Versions: 0.10
>            Reporter: Curt Arnold
>             Fix For: 0.10
>
>         Attachments: COUCHDB-441.patch
>
>
> It would be useful for auditing to have the identity of the user who inserted a new revision
and the timestamp of the operation to be inserted in the document in the same way that the
new revision number is.
> Doing this at the application level is not adequate since it would be readily spoofable
and would bypass the authentication handler.
> There is a comment in couch_db:update_docs about generating new revision ids, but I couldn't
quite comprehend what specific code was responsible for inserting the id into the document.

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