convert array of objects to mongoose query? - mongodb

Question

I have an array of mongoose queries like so
var q = [{"_id":'5324b341a3a9d30000ee310c'},{$addToSet:{"Campaigns":'532365acfc07f60000200ae9'}}]
and I would like to apply them to a mongoose method like so
var q = [{"_id":'5324b341a3a9d30000ee310c'},{$addToSet:{"Campaigns":'532365acfc07f60000200ae9'}}]
Account.update.apply(this, q);
How can I do this ? How can I convert an array of mongoose query objects to mongoose parameters?
I tried the following but it doesnt work.
var q = [{
"_id": '5324b341a3a9d30000ee310c'
}, {
$addToSet: {
"Campaigns": '532365acfc07f60000200ae9'
}
}]
Account.update(q).exec(function (e, r) {
console.log(r)
console.log('ERROR')
console.log(e)
console.log('ERROR')
cb(e, r);
});

Answer 1

All you need to do is pass in the correct object context via apply to the update method:
Account.update.apply(Account, q)
.exec(function(e, r) {
// your code here ...
});
The this needs to be the Model instance, not the global scope context (or whatever else this may have been at the time it was called).

Answer 2

Basically seems to be just the way the prototype of the function seems to be passed in. So if you want to build your arguments dynamically then you need to do something like this:
var q = [
{ "_id": account._id },
{ "$addToSet": { "Campaigns": campaign._id } },
];
Account.update( q[0], q[1], (q[2]) ? q[2] : {}, function(err, num) {
Essentially then you are always passing in the query, update and options documents as arguments. This uses the ternary condition to put an empty {} document in as the options parameter, where it does not exist in your dynamic entry.