Express.js collection.find（）返回对象

Question

I am wanted to display every documents stored in my mongodb. I tried following code which simply get collection.find() and display through res.send()

router.get('/index', function(req,res){
var db = req.db
var collection = db.get('usercollection')

var display = util.inspect(collection.find()));
res.send(display);
});

I expected it to display the actual document stored in mongodb. But instead, it displayed this object format:

{cold:{manager:{driver:[Object], helper:[Object], collection:[Object].....

Is there any other steps needed to display raw mongodb document?

Answer 1

If the library you are using is the official 10gen library , then you can't simply output collection.find() without unwinding it. The easiest way to do that for smaller datasets is

collection.find().toArray(function(err, results) {
  if (err) {
      // do something error-y
  } else {
      res.send( results );
  }
});

If you post more of your code, and tag your question with the libraries you are using, you'll be able to get more targeted help. If the library you are using returns a promise , this is probably how you'd unwind it:

collection.find().then(function(results){
    res.send(results);
}).catch(function(err){
    console.error(err);
});