mongodb - How to create Meteor collection in different database? -

i able create new meteor collection using test = new meteor.collection("testcollection")

but creates testcollection inside admin database of mongo installation.

say have 2 separate databases inside mongo testing , admin. how create above collection in testing db inside mongo installation?

moreover can specify somewhere, want cap/uncap particular collection in order define size of collection.

if want use testing database, can overwrite mongo_url environment variable before calling app, example (use correct url database):

$ export mongo_url=mongodb://localhost:27017/testing $ meteor 

if want use different databases within app, should use the new _driver parameter. use same mongo url default database, replacing database name!

  // replace explicit demonstration. static string advised   var mongo_url = process.env.mongo_url.replace("/admin","/testing");   var testing = new mongointernals.remotecollectiondriver(mongo_url);   test = new mongo.collection("testcollection", { _driver: testing }); 

as capped collections, answered in this meteor issue , fixed this commit:

col1 = new meteor.collection("mycollection"); coll._createcappedcollection(numbytes, maxdocuments); 

to knowledge, cannot uncap capped collection.

note these methods work, have dissociate collection creations between server , client, since clients cannot access server's databases. in client, create collections usual, same name server version:

if (meteor.isserver) {   var testing = new mongointernals.remotecollectiondriver("<mongo url testing>");   test = new mongo.collection("testcollection", { _driver: testing });   test._createcappedcollection(2000000, 500); // capped 2,000,000 bytes, 500 documents } else {   test = new meteor.collection("testcollection"); }