Re: playing with tags

[Jan Lehnardt]

Hi,

See http://wiki.apache.org/couchdb/HTTP_view_API

and "POST" under "Query Options".

You can POST a JSON structure with all your keys to
a view and get all matching rows.

Cheers
Jan
--

On 12 Feb 2009, at 11:42, Nicolas Clairon wrote:

Hi there !

I'm playing with tags these time and a question comes to me.
For exemple, I have a bunch of blog articles:

article1 = {
 ...snip...,
 tags : ["couchdb", "python", "best practices"],
}

article2 = {
   ...snip...,
   tags : ["python", "best practices"],
}

article3 = {
   ...snip...,
   tags : ["couchdb", "best practices"],
}

and a view wich emit tags:

function(doc){
   if (doc.type=="article"){
       for (var i in doc.tags){
           emit( doc.tags[i], doc )
       }
   }
}

We can get all articles wich are tagged with "couchdb" easily:

http://localhost:5984/blog/_view/article/by_tag?key="couchdb";

but now, I want all articles wich are tagged with "couchdb" *and* "python" (I want the article1). Is there a method to do it directly with CouchDB views ?

Something like that :

http://localhost:5984/blog/_view/article/by_tag?key_in=["couchdb";, "python"]

For the moment, I have to do it by program,  firing 2 views and merge
the results...

We can also think something like this:

http://localhost:5984/blog/_view/article/by_tag? onekey_in=["couchdb", "python"]

wich will get all articles which are tagged with "couchdb" *or* "python"...

Does it already exists in CouchDB ?