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From: Guby <guby.mail@gmail.com>
To: couchdb-user@incubator.apache.org
In-Reply-To: <D3B13D76-CC11-4F41-9E50-5876098B7C86@prima.de>
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Subject: Re: Loading another object to return in a view!
Date: Fri, 11 Apr 2008 20:46:33 -0300
References: <6004BDC3-1BE5-4395-96D0-3596A105E292@gmail.com>
 <D3B13D76-CC11-4F41-9E50-5876098B7C86@prima.de>

Maybe I wasn't clear.
It is nothing ajax like.
What I am trying to accomplish is that when document X is indexed by  
the view server, it maps parts of document Y in addition to itself.
I have seen the CouchDB class being used in the test suite in the  
couchDB interface, so I thought that was something that also would be  
available in the views?! But it is not? Is there no way for a view,  
indexing the document X, to access the database and get some info?

Best regards
S


On Apr 11, 2008, at 8:11 PM, Jan Lehnardt wrote:

> Views do not run in the context of a browser. So you don't have any  
> AJAX features there. The map function gets executed in a very  
> isolated environment.
>
> You could hook up a different language interpreter for your views  
> that let's you access external resources, but you'd be pretty much  
> on your own support-wise.
>
> Cheers
> Jan
> --
>
>
> On 12 Apr 2008, at 00:26, Guby <guby.mail@gmail.com> wrote:
>
>> Dear CouchDB developers and users.
>> I have another view related question.
>>
>> What I am trying to do is this:
>> Every document of type X has stored a reference to document Y.  
>> Based on certain parameters in X i decide whether or not to load  
>> and return document Y from the DB.
>>
>> The view code I am trying to use looks something like this:
>>
>> function(doc){
>>   if (doc.class == "OfTypeX" && doc.an_attribute == true){
>>       var db = new CouchDB("mydb");
>>       var doc2 = db.open(doc.id_of_object_Y);
>>       map([doc.another_attribute, doc.id_of_Y], doc2);
>>   }
>> }
>>
>> Whenever I include the line "var db = new CouchDB('mydb');" in my  
>> view everything stops... It works perfectly in the Javascript Shell  
>> though!
>> Any ideas?
>> Aren't you allowed to access the DB directly from a view?
>> Is there a way to access other documents than the one being passed  
>> in to the view, from a view?
>> I realize though that these kinds of views might lead to stale data  
>> as the view index doesn't get updated if the document Y gets  
>> updated, but that is all right in my case.
>>
>> Best regards
>> Sebastian
>>