Below is code to retrieve all documents in collection.
db.collection('movies', function(err, collectionref) {
// find all documents in a collection that have foo: "bar"
var cursor = collectionref.find({});
cursor.toArray(function(err, docs) {
// gets executed once all items are retrieved
res.render('movie', {'movies': docs});
});
});
I want the id of all documents in collection using node js.
You can iterate on cursor object to get _id like this:
var cursor = db.inventory.find( {} );
while (cursor.hasNext()) {
console.log(tojson(cursor.next())._id);
}
Fortunately, since it's just JavaScript, you're provided with normal collection iterators:
// find all documents that are "movies"
db.movies.find({})
.map(function(doc) {
// iterate and return only the _id field for each document
return doc._id;
});
The more formal MongoDB-ish name for this is cursor.map, which:
Applies function to each document visited by the cursor and collects the return values from successive application into an array.
The example in the docs in the link I provided is also pretty clear:
db.users.find().map( function(u) { return u.name; } );
This functionality mimics the native Array.prototype.map in many ways (I would suggest reading those docs as well if you are not familiar with that method).
