How to handle array of objects in node.js using express and mongodb -

i have 2 collection,

var sub= new schema({     content: string,     date: date });  var main= new schema({     subs: [sub] }); 

i creating , deleting way:

exports.create = function(req, res) {     new sub({         content: req.body.content     }).save(function(err, sub) {         main.update({_id: req.body.mid}, {$push: {subs: sub}}, {upsert: true}, function(err, mmain) {             res.redirect('/' + req.body.mid);         });     }); }; exports.destroy = function(req, res) {     sub.findone({_id: req.params.sid}, function(err, sub) {         main.update({_id: req.params.mid}, {$pull: {subs: sub}}, function(err, mmain) {             sub.remove(function(err, sub) {                 res.redirect('/' + req.params.mid);             });         });     }); }; 

so i'm first creating sub object, , use .update $push sub object main collection. however, when delete 1 sub object list, have delete original sub object. there way it? have change 1 sub object instead of having change both sub sits inside main object , original sub object.

well, found out how it. rather suited app use embedded sub have schema , collection deleted sub collection , edited main collection to:

var main= new schema({           subs: [                  content: string,                  date: date                 ]            });   exports.create = function(req, res) {     main.update({_id: req.body.mid}, {$push: {subs: {content: req.body.content}}}, {upsert: true},function(err, main) {         res.end();     }); };