Can't query mongoDB with mongoose in node.js

Question

Suppose I have a collection in my mongoDB: db.co and only have one document:

{ \"_id\" : ObjectId(\"50d083e32cdcf7ce065b616c\"), 
  \"age\" : 22         


        

Answer 1

.find() works asynchronous, meaning that its callback runs when your function already has.

see variable scope in asynchronous function

//try passing a callback function to your search function, like:
function findSomeoneInCo (name, callback) {

  //happens now - here you could still return something

  Co.find({"name": name}, function (err, doc) {

   //happens later - too late to return stuff, function has ran already

    if (err) {
        callback(err);
        return;
    }
    callback(doc);
  })
}


//call your function passing a callback function
findSomeoneInCo("lee", function(doc){
  console.log('do something with your results: ' + doc);
});