find results of attributes in mongodb are always undefined - node.js

Question

I really really need help in this. I am using node.js with mongodb and mongoose. So far I've managed to create a schema and save those into my database.
var Bericht = new Schema({
name : String
, mail : String
, betreff : String
, inhalt : String
, datum : Date
});
var Bericht = mongoose.model('Bericht', Bericht);
I habe a html formular where I can transmit with misc. fields data, by querystring I converting those into readable strings
var bericht_data = {
name: tempo.Name
, mail: tempo.Mail
, betreff: tempo.Betreff
, inhalt: tempo.Inhalt
};
var testoro = new Bericht(bericht_data);
testoro.save(function (err) {
if (!err) console.log('Success!');
});
so tempo.Name for example is a string and it also successful in saving it.
So far I can save all data from this formular into my mongodb.
Now the very problem: I want the data back as string to handle for dynamic html.
To get the info into my console, I use
Bericht.find(
{},
{ '_id': 0},
function(err, docs) {
if (!err){
console.log(docs);
// process.exit();
}
else { throw err;}
}
);
The console gives me all data which was ever saved in my schema Bericht excluding the long _id stuff. Sample output:
[ { name: 'Hans', mail: 'hans#wurst.de', betreff: 'I lost my wurst', inhalt: 'look at me, I am amazing' } ]
That's just one, normally there would be a huge amount of data.
The idea is right now to extract only the name into a string like "Hans". I want to get this name into a var, but hell it seems impossible!
I've tried
Bericht.find(
{},
{ '_id': 0},
function(err, docs) {
if (!err){
console.log(docs.name);
// process.exit();
}
else { throw err;}
}
);
But the I get only "undefined" delivered. I appreciate your help!

Answer 1

Take a look at Mongoose QueryStreams. I haven't used it myself, but I've modified their example code to fit your Model, to give you an idea of how it might work in practice:
var stream = Bericht.find().stream()
, names = []
, i;
function closeHandler() {
console.log(JSON.stringify(names));
};
stream.on('data', function (doc) {
if (doc.name) {
names.push(doc.name);
}
})
stream.on('error', function (err) {
// handle err
})
stream.on('close', closeHandler)

Answer 2

Mongoose find return an array of documents so you should try the following:
Bericht.find(
{},
{ '_id': 0},
function(err, docs) {
if (!err){
for(var i=0; i<docs.length; i++)
{
console.log(docs[i].name);
}
// process.exit();
}
else { throw err;}
}
);