How to set a variable to a query? mongodb

Question

How do I set a variable to a query? I am trying to use functions and callbacks in node.js to work through async, but I am not sure how to get a query to equal to a variable. What I am trying to do in this code is take a friend collection that belongs to a user and return the friends result(which I don't think I am doing correctly in the query insertAll) and then find the user's info for each of the query. And then return the results as a render. I am not sure how to call render either with this...

Here is my code:

exports.contactList = function(req, res) {

    var insertFriend = function(data, callback) {
        var friend = User.findById({_id: user.friendStatus.fuId}, function() {
            callback(null, data);
        }, friend);
    };;

    var insertAll = function(coll, callback) {
        var queue = coll.slice(0),
        friendX;

        (function iterate(){
            if(queue.length === 0) {
                callback();
                return;
            }
            friendX = queue.splice(0,1)[0];
            insertFriend(friendX, function(err, friendX) {
                if(err) {throw err;}
                console.log(friendX + ' inserted');
                process.nextTick(iterate);

            });
        })();
    };



    insertAll([Friend.findOne({userId: req.signedCookies.userid})], function(){

    });

};

ssafejava · Accepted Answer · 2013-08-12 06:11:07Z

2

A Query object is returned if you do not pass a callback.

From http://mongoosejs.com/docs/queries.html:

When a callback function:

is passed, the operation will be executed immediately with the results passed to the callback.

is not passed, an instance of Query is returned, which provides a special QueryBuilder interface for you.

answered Aug 12, 2013 at 6:11

ssafejava

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