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Subject: Re: View to find someone in a list in a document
From: Jan Lehnardt <jan@apache.org>
In-Reply-To: <9BE6119F-6D55-4293-B209-9D23F7A33484@googlemail.com>
Date: Wed, 2 Sep 2009 21:54:56 +0200
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 <9BE6119F-6D55-4293-B209-9D23F7A33484@googlemail.com>
To: user@couchdb.apache.org

Style police!

On 2 Sep 2009, at 19:00, Simon Metson wrote:

> Hi,
> 	Do you mean you want to emit each user as a key? Something like:
>
> function(doc) { for (v in doc.users) { emit(doc.users[v], doc); }

is better written as

function(doc) { for (var v in doc.users) { emit(doc.users[v], doc); }

if you leave out the `var` you create a global variable (as opposed to  
a local variable in JS and that can have funky effects.

better yet:

function(doc) { if(doc.users) { for (var v in doc.users) { emit 
(doc.users[v], doc); }}

protects you against errors for documents that doesn't have a `users`  
property.

otherwise, excellent advice! :)

Cheers
Jan
--


>
> as a map would do that.
> Cheers
> Simon
>
> On 2 Sep 2009, at 17:25, Jehan Bihin wrote:
>
>> Hi all,
>>
>> (sorry for my english)
>> I have a document having a list of persons :
>>
>> ...
>> "users":{"membre-joouul_hotmail.com":["createur"],"membre- 
>> killan_daaboo.net
>> ":["moderateur"]}
>> ...
>>
>> Each persons have some roles.
>> My key is the membre like 'membre-joouul_hotmail.com'
>> And i want to list all document having my key present in the users  
>> list.
>>
>> Is it possible and correct to have it ?
>> Can you guide me ? After reading here and the site I found nothing  
>> talking
>> on that.
>>
>> Thanks in advance,
>>
>> Jehan
>