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https://issues.apache.org/jira/browse/COUCHDB-1268?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13099713#comment-13099713
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Randall Leeds commented on COUCHDB-1268:
----------------------------------------

Patch is finished and as a side affect I think I'm enabling new_edits=false and 
batch=true for things like COPY and POST. Speak up if you have a reason for 
that not to be the case, but what I've done cleans up couch_httpd_db.erl quite 
a bit. Just need to separate the patches into a couple logical chunks and write 
a test.

> "?rev=" URL query parameter
> ---------------------------
>
>                 Key: COUCHDB-1268
>                 URL: https://issues.apache.org/jira/browse/COUCHDB-1268
>             Project: CouchDB
>          Issue Type: Improvement
>          Components: Database Core
>    Affects Versions: 1.2
>         Environment: linux
>            Reporter: gert cuykens
>            Assignee: Randall Leeds
>            Priority: Trivial
>              Labels: api-change
>   Original Estimate: 24h
>  Remaining Estimate: 24h
>
> When PUTting a document you have to specify the current revision as a _rev 
> key in the JSON; whereas many related requests (like DELETE, COPY and PUT of 
> an attachment) specify the revision in a "?rev=" URL query parameter instead. 
> The first example, will result into a document conflict because rev is not 
> specified in the JSON and the rev from the url gets ignored. All other 
> examples work. I strongly believe JSON bodies like this should never contain 
> _id and _rev and will improve in much better client code.
> curl -X PUT http://localhost:5984/_users/user%3Agert?rev=5xxx -H
> 'Content-Type: application/json' -d{
>  "_id"          : "user:gert",
>  "type"         : "user",
>  "name"         : "gert",
>  "roles"        : [],
>  "password_sha" : "",
>  "salt"         : ""
> }'
> curl -X PUT http://localhost:5984/_users/user%3Agert -H 'Content-Type:
> application/json' -d{
>  "_id"          : "user:gert",
>  "_rev":"5xxx",
>  "type"         : "user",
>  "name"         : "gert",
>  "roles"        : [],
>  "password_sha" : "",
>  "salt"         : ""
> }'
> curl -X PUT http://localhost:5984/_users/user%3Agert/picture?rev=5xxx
> -H 'Content-Type: image/png' -d @picture.png

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