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https://issues.apache.org/jira/browse/COUCHDB-1268?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13095328#comment-13095328
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Jan Lehnardt commented on COUCHDB-1268:
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I agree that ?rev should be honoured, but I disagree that _id and _rev should
not be part of the document itself. Other than theoretical purity I haven't
seen any strong arguments against this and I've only seen good things coming
out of it and I conclude that it is a very nice practical compromise. But we've
had that discussion numerous times.
> "?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
> 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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