On Jul 25, 2010, at 12:50 PM, Mikeal Rogers wrote:
> Why not just doc.tags.forEach(function(t) {emit(t,1)})
>
> Then do a POST query to the view with {"keys":["holiday", "camping"],
> "include_docs":true}
>
That'll give OR but not AND. He'd then have to do the intersection on the
client. I do think this is still a pretty pragmatic solution as long as there
aren't too many docs tagged "camping" and not "holiday"
> Wrote this code on my iPhone so I hope it's correct. :)
>
> On Sunday, July 25, 2010, J Chris Anderson <[email protected]> wrote:
>>
>> On Jul 25, 2010, at 10:18 AM, Joe Bloggs wrote:
>>
>>> I have been impressed with couchdb so far but I have now hit the first
>>> problem
>>> that I cannot see how to resolve easily.
>>>
>>> I have a few test documents with a photo attached to each. I want to tag
>>> these
>>> photos so I have a field called tags. This tag field may contain 1 or many
>>> tags.
>>>
>>> For example:-
>>>
>>> [ "holiday","camping"]
>>> or
>>> ["holiday","skiing"]
>>>
>>> I can easily create a view that allows me to search the tags with
>>> ?key="holiday"
>>> however I cannot work out how to select photos which contains both tag1 and
>>> tag2.
>>
>> the simplest way to do this is with 2 view queries, and compute the
>> intersection.
>>
>> the other option is to emit the tags list in all possible permutations (you
>> can cut them down a bit if you only emit them sorted by alpha order). this
>> will make a much larger index, especially if docs tend to have more than 3
>> or so tags.
>>
>>>
>>> Any guidance would be appreciated.
>>>
>>> Regards
>>>
>>> Robin
>>>
>>>
>>
>>
