Currently, I am working on retrieving data from MongoDB and passing it to my Express server to eventually display it in my HTML using Angular. The retrieval process is successful when there is only one record in the database. However, if multiple records are created, an error appears in the console:
"can't send headers after they are sent"
This is how my "get" request looks like in Express:
router.get('/getdata', function(req, res, next){
var findDocuments = function(db, callback) {
var cursor = db.collection('userdata').find({});
cursor.each(function(err, doc) {
assert.equal(err, null);
if (doc != null) {
res.status(200).json(doc);
} else {
callback();
}
});
};
mongo.connect(url, function(err, db) {
assert.equal(null, err);
findDocuments(db, function() {
db.close();
});
});
console.log('Items have been returned');
});