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https://issues.apache.org/jira/browse/COUCHDB-2570?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14940435#comment-14940435
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Sean Lang commented on COUCHDB-2570:
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If the browser is sending `Accept:*/*`, then you can return
`application/json`... the browser is saying that it supports any content type.
And sending JSON as text/plain is harmful because the browser will display it
as text, rather than doing what it is supposed to (in this case: saving the
file as a download, or in my case: displaying it as formatted JSON).
CouchDB doesn't get to decide how the browser should be handling JSON responses
- the browser (and therefore the user) decides that. If the browser turns it
into a file download, then that's probably because minified JSON is useless to
read in a browser (if you don't have something like JSONView installed) and it
should be opened in an external program.
And `test/plain` isn't even the representation you're returning. If you
actually wanted to return text/plain, you should convert the response into
something like YAML or at least pretty-printed JSON... Not that this would be a
good solution, but at least then you could sorta consider it text/plain, unlike
the blob of JSON I get right now, which is nigh unreadable for humans.
> Using JSONView and similar plugins that teaches browsers to send Accept
> header with application/json MIME type is optional feature that is not
> available for all users.
First, the browser shouldn't need to send `application/json` - it already sent
`*/*`, which means `application/json` is accepted. Second, displaying JSON in
the browser _is_ an optional feature. I do think that browsers should support
displaying JSON and other content types in meaningful ways (which is why I use
things like JSONView), but it's certainly not a requirement.
> All Docs reports wrong content-type
> -----------------------------------
>
> Key: COUCHDB-2570
> URL: https://issues.apache.org/jira/browse/COUCHDB-2570
> Project: CouchDB
> Issue Type: Bug
> Security Level: public(Regular issues)
> Reporter: Dominic Barnes
>
> On {{1.6.1}}, the {{/:db/_all_docs}} endpoint only reports {{Content-Type:
> text/plain}} rather than {{application/json}}.
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