Brtdku

What is wrong with this result? my res.send(dbResult) is not giving me any data. It is empty.

/* GET users listing. */

router.get('/', function(req, res, next) {



  async function getData(){

    try{

     var dbResult = await mongodb.findData("contacts","iyaiContacts");

     console.log('before dbResult');

     res.send (dbResult);

    }catch(error){

      console.log("error getting contacts...", error.message);

    }

  }

  getData();

});

Additional code for clarity. I have a db.js file that is used to handle the MongoDB connections and queries. Here is the Find Data function. Sorry I didn't realize I was being confusing until people asked questions.

const findData = (myColl, myDb) => {

  try {

    MongoClient.connect(

      url,

      function(err, client) {

        client

          .db(myDb)

          .collection(myColl)

          .find()

          .sort({ nmFull: 1 })

          .toArray(function(err, result) {

            console.log("find() result...", result);

            return result;

          });

      }

    );

  } catch (e) {

    console.log(`findData() error message is...${e.message}`);

    client.close(); // trying to close open db connection if it exist

    throw e;

  }

};

You are writing a backend service for your app that need to fetch data from your MongoDB. The problem is that your handling functions in synchronous manor — instead you need to handle as asynchronous.

// Quick fix for your code



const findData = (myColl, myDb) => {

    return new Promise(function (resolve, reject) {

        MongoClient.connect(url)

            .then((client) => {

                return client.db(myDb)

            }).then((db) => {

                return db.collection(myColl).find().sort({ nmFull: 1 })

                    .toArray((err, result) => { resolve(result); });

            }).catch((err) => {

                reject(err);

            });

    });

};

Here are some best practice to connect MongoDB on Node.js,

• MongoClient or how to connect in a new and better way


• Using MongoDB With Node.js