Nodejs not sending response to Angular? - angularjs

Question

I have a doozy that I can't figure out whats going on.
In Mongo, I do a document.find(), which returns an array of object/s - All good.
I'm then trying to send on two objects back to the Angular Controller, the document object/s and the length of the array of objects.
Code:
function loadConnections(req, res) {
getConnections(req.user)
.then(function(results){
console.log('here');
console.log(results);
console.log(results.length);
var returnObject = {}
returnObject.count = results.length;
//returnObject.results = results[0]; // PROBLEM LINE
res.status(200).send(returnObject);
});
}
Problem I'm facing. In this scenario, it returns an array with 1 object. The array looks like:
[{id: XXX, test: YYY, test1: ZZZ}]
These have been what I've tried and tested:
returnObject.results = results[0].id; // works
returnObject.results = results[0].test; // works
returnObject.results = results[0].test1; //works
returnObject.results = results[0]; // doesn't work
returnObject.results = results; //doesn't work
But if I try to pass the entire object or the entire array, it hits an issue and doesn't send the response to the controller.
Any thoughts?

Answer 1

If you are using express, try to do a
res.send(200, returnObject);
or
res.json(200, returnObject);
that should do the trick!

Answer 2

Personally I would just calculate the length of the array after it arrives in my Angular client, rather than on the server. However, you should be able to accomplish what you're trying to do by doing this:
var returnObject = {
'count': results.length,
'results': results
};
res.json(returnObject);
Here's the doc: http://expressjs.com/en/api.html#res.json
Also just for general troubleshooting, the first thing you want to do is figure out where the inconsistency is starting. Does the data look right on the server before you send the response? Does the data look right on the client when your API handler receives the response? (I'm assuming $resource, or maybe you're using $http). So add a line like this just before you send the response from the server, and then add a similar line just after you receive the response in the client:
console.log(JSON.stringify(returnObject, null, 2));

Answer 3

Turns out it was my lodash library. I was using _.pluck and somewhere along the way, it's stopped working. Had to update it to _.map.