Mailing-List: contact couchdb-user-help@incubator.apache.org; run by ezmlm
Precedence: bulk
Reply-To: couchdb-user@incubator.apache.org
Received-SPF: pass (athena.apache.org: domain of peter.eddy@gmail.com
 designates 209.85.132.243 as permitted sender)
DomainKey-Signature: a=rsa-sha1; c=nofws;
        d=gmail.com; s=gamma;
        h=message-id:date:from:to:subject:in-reply-to:mime-version
         :content-type:content-transfer-encoding:content-disposition
         :references;
        b=lsFWgYAgQdaNVTpMIRLopsNkrYISmpmkSvLgGoYZa25r01/1Wx7+GlHznIvl3LxhIW
         YKu2aM1MG8ZSpiuDrOowufRcdZOx1YwEN00yLdyBE3m6ojxvTK8JRvML+7ehUoYQR3i0
         FqYi+ctdQCp824BLqco6p50gqwLydqz+b9muo=
Message-ID: <5aea26870807170847k270b2438n411eea3eb371f6ef@mail.gmail.com>
Date: Thu, 17 Jul 2008 11:47:48 -0400
From: "Peter Eddy" <peter.eddy@gmail.com>
To: couchdb-user@incubator.apache.org
Subject: Re: more newbie questions - how to use more than one key in views
In-Reply-To: <71DAC66D-E24B-4C83-9668-DDBDA3F7C456@gmail.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: 7bit
Content-Disposition: inline
References: <71DAC66D-E24B-4C83-9668-DDBDA3F7C456@gmail.com>

I've done this using an array in emit(), like so:

emit( [doc.title_slug,doc.language,doc.user_id], doc );

- Peter

On 7/17/08, Sho Fukamachi <sho.fukamachi@gmail.com> wrote:
> Hi all,
>
> another n00b view question from an SQL refugee.
>
> I can't figure out how to use views to search for documents by more
> than one criterion. For example, I have a node-type content DB with
> various properties - user_id, title_slug, and language.
>
> What I can't figure out is how to select by more than one of them at a
> time dynamically, rather than having hard-coded views.
>
> For example, what I'm doing right now is something like this:
>
> "map" => "function(doc) { if (doc.type == 'content_node' &&
> doc.langauge == 'en_AU') emit(doc.title_slug, doc); }"
>
> Problem is I need an additional filter in there and I'm not sure how
> to get it in - and it's far from ideal to hardcode the language. Can I
> have more than one key in the emit function? Any examples of this kind
> of thing anywhere?
>
> I mean, what I really want to do is
>
> "function(doc) { if (doc.type == 'content_node' )
> emit((doc.title_slug, doc.language, doc.user_id), doc); }"
>
> but somehow I don't think it works like that.
>
> Any hints? Examples of similar solutions? Or, just as welcome,
> suggestions that I am coming at this from a totally wrong direction
> and advice on what I should really be doing?
>
> thank you,
>
> Sho