CouchDB- basic grouping question
- by dnolen
I have a user document which has a group field. This field is an array of group ids. I would like to write a view that returns (groupid as key) - (array of user docs as val). This mapping operation seems like a good beginning.
function(doc)
{
var type = doc.type;
var groups = doc.groups;
if(type == "user" && groups.length > 0)
{
for(var i = 0; i < groups.length; i++)
{
emit(groups[i], doc);
}
}
}
But there's obviously something very wrong with my attempt at a reduce:
function(key, values, rereduce)
{
var set = [];
var seen = [];
for(var i = 0; i < values.length; i++)
{
var _id = values[i]._id;
if(seen.indexOf(_id) == -1)
{
seen.push(_id);
set.push(values[i]);
}
}
return set;
}
I'm running CouchDB 0.10dev. Any help appreciated.
