What is the requirement for MongoDB's first argument - does it have to be a string or

Seeking assistance with streaming all documents from a mongoDB collection to my website. Here's the code snippet in question:

mongoClient.connect('mongodb://localhost:27017/database', function(err, db) {
if (err) throw err

var cursor = db.collection("Users").find();

while(cursor.hasNext()){
    res.write(cursor.next())
}

res.end()

Encountering the error "first argument must be a string or buffer". How can I properly convert the data retrieved into a string for parsing?

Answer №1

Here is a sample code snippet to connect to MongoDB and retrieve data from the Users collection through an HTTP response:

mongoClient.connect('mongodb://localhost:27017/database', function(err, db) 
{
  if (err) throw err
  console.log("Successfully connected to the server");
  db.collection("Users").find({}).toArray(function(err, dbres) {
    console.log("Selected records: ", dbres);
    db.close();
    resp.writeHead(200, { "Content-Type": "application/json"});
    resp.write(JSON.stringify(dbres));
    resp.end();
  });
}

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