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Date: Sun, 14 Nov 2010 22:33:53 -0500
Message-ID: <AANLkTin_Dc0pr5jPxrpeFfXkLT+87cmy+=+8WRffTMjy@mail.gmail.com>
Subject: Re: Best way to store permalinks?
From: couchdb user <couchdbuser@gmail.com>
To: user@couchdb.apache.org
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Hi Nolan,

I haven used the rewrite option in couchdb yet but you may want to
check the couchdb log to see if the rewrite is working as you expect
it. Sorry I cannot be more helpful.

Regards,


On Wed, Nov 10, 2010 at 11:32 PM, Nolan Darilek <nolan@thewordnerd.info> wr=
ote:
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>
> Hey folks. I've asked this in a couple different IRC channels and on
> the couchapp list, but never received an answer. So I'm assuming that
> this list has a broader subscriber base, and that perhaps someone here
> can help.
>
> I'm trying to migrate my blog into a couchdb, and trying to serve it
> up via a couch app. I'm doing it from scratch both as a learning
> experience, and because there are some aspects of Sofa that I don't like.
>
> One such is its permalinks. My existing blog has a fairly generic
> permalink structure (I.e.):
>
> /yyyy
> /yyyy/mm
> /yyyy/mm/dd
> /yyyy/mm/dd/article-title/
> /about
> /contact
> ...
>
> I've migrated all of my posts into the database, and I have the
> date-based permalinks working nicely via a byDate view. I'm failing on
> page/article permalinks, though. Here's the map view I'm using:
>
> function(doc) {
> =A0// !code lib/util.js
> =A0emit(permalink(doc), doc)
> }
>
> And the permalink() functions. I'm new to JS, so pardon any newbie-isms:
>
> function normalizeString(str) {
> =A0return str.toLowerCase().replace(" ", "-").replace(/![a-z0-9]/, "")
> }
>
> function pad(n) { return (n < 10) ? "0"+n: n.toString() }
>
> function permalink(doc) {
> =A0if(doc.permalink)
> =A0 =A0return "/"+doc.permalink
> =A0else if(doc.type && doc.type =3D=3D "post") {
> =A0 =A0var createdAt =3D new Date(doc.createdAt)
> =A0 =A0var title =3D normalizeString(doc.title)
> =A0 =A0var month =3D pad(createdAt.getMonth()+1)
> =A0 =A0var day =3D pad(createdAt.getDate())
> =A0 =A0return "/"+createdAt.getFullYear()+"/"+month+"/"+day+"/"+title+"/"
> =A0} else {
> =A0 =A0return "/"+doc._id
> =A0}
> }
>
> If I hit the view directly, I get back a list of permalinks:
>
> {"total_rows":14,"offset":0,"rows":[
> {"id":"13e93fae-1dee-4805-8de0-66d8dc2f7c3f","key":"/2009/07/02/announcin=
g-utterance/","value":{"_id":"13e93fae-1dee-4805-8de0-66d8dc2f7c3f","_rev":=
"14-bd7c1b4494b1190a05bb09c9fc1e8c2a","body":"No,
> this isn't the major post I
> ...
>
> And if I hit the view with a permalink key, I get back the specific
> document:
>
> I also have a list function that renders articles to pages. I can hit
> this list function with a permalink as the key and it works.
>
> I can't for the life of me get a rewrite rule to work with this,
> though. The closest I've come is:
>
> =A0{
> =A0 =A0"from": "/:year/:month/:day/:title",
> =A0 =A0"to" : "_list/page/permalink",
> =A0 =A0"query": {
> =A0 =A0 =A0"key": "\":year/:month/:day/:title\""
> =A0 =A0}
> =A0},
>
> curl
> localhost:5984/blog/_design/blog/_rewrite/2009/07/02/announcing-utterance=
/
> (with and without final /)
>
> And when I say that's the best, I mean that it returns HTML. I just
> get a page with my header and footer, but nothing for the page content
> (I.e. a blank spot where the article should be.) At least it doesn't
> tell me my JSON is invalid. I've also tried including or excluding /
> on the ends of the key. I don't even know if the rewrite rules include
> those in the beginning and end, but either I didn't do something
> correctly or something is horribly broken, because no permutation of /
> seemed to make a difference.
>
> I've been working at this for over a week. Can anyone point me in the
> right direction? I've read the wiki, but there's a bit of a last mile
> issue in so much of the docs, as they'll mention that something sends
> "req" as a parameter, only you have to visit another non-linked-to
> page to find out what form that takes. The rewrite docs include lots
> of a=3Db,c=3Dd types of examples, but practical ones would be more helpfu=
l
> to me. I'm wondering, for instance, if I can just use "*" instead? Not
> all of my articles will be posts, and I'd like to link to
> explicitly-set permalinks if possible. Or do I need to store
> permalinks as an array of path components?
>
> If there's anything else I can provide then let me know.
>
> Thanks.
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