CODEWITHSUNDEEP
node.jsmongodb
blackmamba
blackmamba

Reputation: 1982

Given a set of ids, remove all documents with those ids

I need to remove a set of ids using an object which contains those ids. Right now I am iteratively removing ti. Is it possible to remove them at once?

My code (iteratively): 

remove_data(doc[0]._id,function(result){
    for(entry in result) {
        db.mydata.remove({"_id":result[entry]}, function(err,doc) {
            if(err) throw err;            
        });
    }
});

Also I need to pass a callback after this is done.

Upvotes: 0

Views: 56

Answers (1)

freakish
freakish

Reputation: 56467

First combine IDs into a list:

var ids = [];
for (var k in result) {
    if (result.hasOwnProperty(k)) {
        ids.push(result[k]);
    }
};

and then

db.mydata.remove({"_id": {"$in": ids}}, function(err) {
    // ...
});

Side note: if you are dealing with multiple asynchronous tasks and you have to call a callback after all of them finish then you should use some kind of asynchronous control flow library. Caolan's async.js is a good choice:

https://github.com/caolan/async

Upvotes: 3

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