Get the _id of inserted document in Mongo database in NodeJS












84















I use NodeJS to insert documents in MongoDB. Using collection.insert I can insert a document into database like in this code:



// ...
collection.insert(objectToInsert, function(err){
if (err) return;
// Object inserted successfully.
var objectId; // = ???
});
// ...


How can I get the _id of inserted object?



Is there any way to get the _id without getting latest object inserted _id?



Supposing that in same time a lot of people access the database, I can't be sure that the latest id is the id of object inserted.










share|improve this question



























    84















    I use NodeJS to insert documents in MongoDB. Using collection.insert I can insert a document into database like in this code:



    // ...
    collection.insert(objectToInsert, function(err){
    if (err) return;
    // Object inserted successfully.
    var objectId; // = ???
    });
    // ...


    How can I get the _id of inserted object?



    Is there any way to get the _id without getting latest object inserted _id?



    Supposing that in same time a lot of people access the database, I can't be sure that the latest id is the id of object inserted.










    share|improve this question

























      84












      84








      84


      11






      I use NodeJS to insert documents in MongoDB. Using collection.insert I can insert a document into database like in this code:



      // ...
      collection.insert(objectToInsert, function(err){
      if (err) return;
      // Object inserted successfully.
      var objectId; // = ???
      });
      // ...


      How can I get the _id of inserted object?



      Is there any way to get the _id without getting latest object inserted _id?



      Supposing that in same time a lot of people access the database, I can't be sure that the latest id is the id of object inserted.










      share|improve this question














      I use NodeJS to insert documents in MongoDB. Using collection.insert I can insert a document into database like in this code:



      // ...
      collection.insert(objectToInsert, function(err){
      if (err) return;
      // Object inserted successfully.
      var objectId; // = ???
      });
      // ...


      How can I get the _id of inserted object?



      Is there any way to get the _id without getting latest object inserted _id?



      Supposing that in same time a lot of people access the database, I can't be sure that the latest id is the id of object inserted.







      javascript node.js mongodb






      share|improve this question













      share|improve this question











      share|improve this question




      share|improve this question










      asked Jan 23 '13 at 13:59









      Ionică BizăuIonică Bizău

      59.3k57202351




      59.3k57202351
























          8 Answers
          8






          active

          oldest

          votes


















          78














          There is a second parameter for the callback for collection.insert that will return the doc or docs inserted, which should have _ids.



          Try:



          collection.insert(objectToInsert, function(err,docsInserted){
          console.log(docsInserted);
          });


          and check the console to see what I mean.






          share|improve this answer





















          • 4





            Callback actually returns array of documents inserted. So, if you have inserted a single document then you can access the inserted record as below. collection.insert({name:"David", title:"About MongoDB"}, function(err, records){ console.log("Record added as "+records[0]._id); }); Ref: mongodb.github.io/node-mongodb-native/markdown-docs/insert.html

            – Rohit Singh Sengar
            Jun 16 '14 at 11:47








          • 2





            The Callbacks API has changed: mongodb.github.io/node-mongodb-native/2.0/api/…

            – tenbits
            May 13 '15 at 13:10











          • link does not lead anywhere useful

            – davidhadas
            Apr 8 '16 at 21:42











          • I don't know if this is general or only works in meteor, but when you call collection.insert(object), it returns the id of the inserted object right away.

            – vantesllar
            Oct 30 '16 at 20:45






          • 4





            docsInserted does not return an _id for me. it returns for me { "ok": 1, "n": 1, "opTime": { "ts": "6361004504208375809", "t": 5 }, "electionId": "7fffffff0000000000000005" }

            – user1709076
            Dec 6 '16 at 15:08



















          77














          A shorter way than using second parameter for the callback of collection.insert would be using objectToInsert._id that returns the _id (inside of the callback function, supposing it was a successful operation).



          The Mongo driver for NodeJS appends the _id field to the original object reference, so it's easy to get the inserted id using the original object:



          collection.insert(objectToInsert, function(err){
          if (err) return;
          // Object inserted successfully.
          var objectId = objectToInsert._id; // this will return the id of object inserted
          });





          share|improve this answer





















          • 4





            Very insightful thank you. Couldn't find this information anywhere else since the change in callback parameters.

            – Brad Hein
            Jul 26 '15 at 18:39











          • @BradHein You're welcome! Probably the MongoDB driver modifies the object reference, so it gets modified here too. :)

            – Ionică Bizău
            Jul 27 '15 at 4:25











          • Your code is wrong, where you say var objectId = objectToInsert._id; you meant to say var objectId = objectInserted._id;

            – Andy Lorenz
            Jul 28 '15 at 13:48








          • 3





            @AndyLorenz What is objectInserted? I guess you're missing exactly the point of this answer: the Mongo driver appends the _id field to the original object. I edited the answer to use objectToInsert everywhere. Hope the things are clearer now. :)

            – Ionică Bizău
            Jul 28 '15 at 18:50






          • 1





            NOTE: insert() is deprecated. Use insertOne() instead

            – evilReiko
            Nov 24 '16 at 12:07



















          11














          I actually did a console.log() for the second parameter in the callback function for insert. There is actually a lot of information returned apart from the inserted object itself. So the code below explains how you can access it's id.



          collection.insert(objToInsert, function (err, result){
          if(err)console.log(err);
          else {
          console.log(result["ops"][0]["_id"]);
          // The above statement will output the id of the
          // inserted object
          }
          });





          share|improve this answer





















          • 1





            thanks :) this worked for me

            – Aayushi
            Jul 13 '17 at 9:50











          • this should be marked as the correct response

            – user1709076
            Jul 27 '17 at 12:04



















          10














          As ktretyak said, to get inserted document's ID best way is to use insertedId property on result object. In my case result._id didn't work so I had to use following:



          db.collection("collection-name")
          .insertOne(document)
          .then(result => {
          console.log(result.insertedId);
          })
          .catch(err => {
          // handle error
          });


          It's the same thing if you use callbacks.






          share|improve this answer































            5














            Mongo sends the complete document as a callbackobject so you can simply get it from there only.



            for example



            collection.save(function(err,room){
            var newRoomId = room._id;
            });





            share|improve this answer































              4














              Now you can use insertOne method and in promise's result.insertedId






              share|improve this answer
























              • Could you provide a code example? Where does this result object come from?

                – JSideris
                Sep 20 '16 at 22:00











              • @JSideris, as you can see in the specification method insertOne(), this method accepts three parameters (doc, options, callback). The third parameter - a callback, which takes two parameters (error, result). And result - this is what you are looking for.

                – ktretyak
                Sep 21 '16 at 0:10





















              1














              @JSideris, sample code for getting insertedId.



              db.collection(COLLECTION).insertOne(data, (err, result) => {
              if (err)
              return err;
              else
              return result.insertedId;
              });





              share|improve this answer































                0














                if you want to take "_id" use simpley



                result.insertedId.toString() 


                // toString will convert from hex






                share|improve this answer
























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                  8 Answers
                  8






                  active

                  oldest

                  votes








                  8 Answers
                  8






                  active

                  oldest

                  votes









                  active

                  oldest

                  votes






                  active

                  oldest

                  votes









                  78














                  There is a second parameter for the callback for collection.insert that will return the doc or docs inserted, which should have _ids.



                  Try:



                  collection.insert(objectToInsert, function(err,docsInserted){
                  console.log(docsInserted);
                  });


                  and check the console to see what I mean.






                  share|improve this answer





















                  • 4





                    Callback actually returns array of documents inserted. So, if you have inserted a single document then you can access the inserted record as below. collection.insert({name:"David", title:"About MongoDB"}, function(err, records){ console.log("Record added as "+records[0]._id); }); Ref: mongodb.github.io/node-mongodb-native/markdown-docs/insert.html

                    – Rohit Singh Sengar
                    Jun 16 '14 at 11:47








                  • 2





                    The Callbacks API has changed: mongodb.github.io/node-mongodb-native/2.0/api/…

                    – tenbits
                    May 13 '15 at 13:10











                  • link does not lead anywhere useful

                    – davidhadas
                    Apr 8 '16 at 21:42











                  • I don't know if this is general or only works in meteor, but when you call collection.insert(object), it returns the id of the inserted object right away.

                    – vantesllar
                    Oct 30 '16 at 20:45






                  • 4





                    docsInserted does not return an _id for me. it returns for me { "ok": 1, "n": 1, "opTime": { "ts": "6361004504208375809", "t": 5 }, "electionId": "7fffffff0000000000000005" }

                    – user1709076
                    Dec 6 '16 at 15:08
















                  78














                  There is a second parameter for the callback for collection.insert that will return the doc or docs inserted, which should have _ids.



                  Try:



                  collection.insert(objectToInsert, function(err,docsInserted){
                  console.log(docsInserted);
                  });


                  and check the console to see what I mean.






                  share|improve this answer





















                  • 4





                    Callback actually returns array of documents inserted. So, if you have inserted a single document then you can access the inserted record as below. collection.insert({name:"David", title:"About MongoDB"}, function(err, records){ console.log("Record added as "+records[0]._id); }); Ref: mongodb.github.io/node-mongodb-native/markdown-docs/insert.html

                    – Rohit Singh Sengar
                    Jun 16 '14 at 11:47








                  • 2





                    The Callbacks API has changed: mongodb.github.io/node-mongodb-native/2.0/api/…

                    – tenbits
                    May 13 '15 at 13:10











                  • link does not lead anywhere useful

                    – davidhadas
                    Apr 8 '16 at 21:42











                  • I don't know if this is general or only works in meteor, but when you call collection.insert(object), it returns the id of the inserted object right away.

                    – vantesllar
                    Oct 30 '16 at 20:45






                  • 4





                    docsInserted does not return an _id for me. it returns for me { "ok": 1, "n": 1, "opTime": { "ts": "6361004504208375809", "t": 5 }, "electionId": "7fffffff0000000000000005" }

                    – user1709076
                    Dec 6 '16 at 15:08














                  78












                  78








                  78







                  There is a second parameter for the callback for collection.insert that will return the doc or docs inserted, which should have _ids.



                  Try:



                  collection.insert(objectToInsert, function(err,docsInserted){
                  console.log(docsInserted);
                  });


                  and check the console to see what I mean.






                  share|improve this answer















                  There is a second parameter for the callback for collection.insert that will return the doc or docs inserted, which should have _ids.



                  Try:



                  collection.insert(objectToInsert, function(err,docsInserted){
                  console.log(docsInserted);
                  });


                  and check the console to see what I mean.







                  share|improve this answer














                  share|improve this answer



                  share|improve this answer








                  edited Mar 1 '18 at 17:15

























                  answered Jan 23 '13 at 14:13









                  georgedyergeorgedyer

                  2,3841725




                  2,3841725








                  • 4





                    Callback actually returns array of documents inserted. So, if you have inserted a single document then you can access the inserted record as below. collection.insert({name:"David", title:"About MongoDB"}, function(err, records){ console.log("Record added as "+records[0]._id); }); Ref: mongodb.github.io/node-mongodb-native/markdown-docs/insert.html

                    – Rohit Singh Sengar
                    Jun 16 '14 at 11:47








                  • 2





                    The Callbacks API has changed: mongodb.github.io/node-mongodb-native/2.0/api/…

                    – tenbits
                    May 13 '15 at 13:10











                  • link does not lead anywhere useful

                    – davidhadas
                    Apr 8 '16 at 21:42











                  • I don't know if this is general or only works in meteor, but when you call collection.insert(object), it returns the id of the inserted object right away.

                    – vantesllar
                    Oct 30 '16 at 20:45






                  • 4





                    docsInserted does not return an _id for me. it returns for me { "ok": 1, "n": 1, "opTime": { "ts": "6361004504208375809", "t": 5 }, "electionId": "7fffffff0000000000000005" }

                    – user1709076
                    Dec 6 '16 at 15:08














                  • 4





                    Callback actually returns array of documents inserted. So, if you have inserted a single document then you can access the inserted record as below. collection.insert({name:"David", title:"About MongoDB"}, function(err, records){ console.log("Record added as "+records[0]._id); }); Ref: mongodb.github.io/node-mongodb-native/markdown-docs/insert.html

                    – Rohit Singh Sengar
                    Jun 16 '14 at 11:47








                  • 2





                    The Callbacks API has changed: mongodb.github.io/node-mongodb-native/2.0/api/…

                    – tenbits
                    May 13 '15 at 13:10











                  • link does not lead anywhere useful

                    – davidhadas
                    Apr 8 '16 at 21:42











                  • I don't know if this is general or only works in meteor, but when you call collection.insert(object), it returns the id of the inserted object right away.

                    – vantesllar
                    Oct 30 '16 at 20:45






                  • 4





                    docsInserted does not return an _id for me. it returns for me { "ok": 1, "n": 1, "opTime": { "ts": "6361004504208375809", "t": 5 }, "electionId": "7fffffff0000000000000005" }

                    – user1709076
                    Dec 6 '16 at 15:08








                  4




                  4





                  Callback actually returns array of documents inserted. So, if you have inserted a single document then you can access the inserted record as below. collection.insert({name:"David", title:"About MongoDB"}, function(err, records){ console.log("Record added as "+records[0]._id); }); Ref: mongodb.github.io/node-mongodb-native/markdown-docs/insert.html

                  – Rohit Singh Sengar
                  Jun 16 '14 at 11:47







                  Callback actually returns array of documents inserted. So, if you have inserted a single document then you can access the inserted record as below. collection.insert({name:"David", title:"About MongoDB"}, function(err, records){ console.log("Record added as "+records[0]._id); }); Ref: mongodb.github.io/node-mongodb-native/markdown-docs/insert.html

                  – Rohit Singh Sengar
                  Jun 16 '14 at 11:47






                  2




                  2





                  The Callbacks API has changed: mongodb.github.io/node-mongodb-native/2.0/api/…

                  – tenbits
                  May 13 '15 at 13:10





                  The Callbacks API has changed: mongodb.github.io/node-mongodb-native/2.0/api/…

                  – tenbits
                  May 13 '15 at 13:10













                  link does not lead anywhere useful

                  – davidhadas
                  Apr 8 '16 at 21:42





                  link does not lead anywhere useful

                  – davidhadas
                  Apr 8 '16 at 21:42













                  I don't know if this is general or only works in meteor, but when you call collection.insert(object), it returns the id of the inserted object right away.

                  – vantesllar
                  Oct 30 '16 at 20:45





                  I don't know if this is general or only works in meteor, but when you call collection.insert(object), it returns the id of the inserted object right away.

                  – vantesllar
                  Oct 30 '16 at 20:45




                  4




                  4





                  docsInserted does not return an _id for me. it returns for me { "ok": 1, "n": 1, "opTime": { "ts": "6361004504208375809", "t": 5 }, "electionId": "7fffffff0000000000000005" }

                  – user1709076
                  Dec 6 '16 at 15:08





                  docsInserted does not return an _id for me. it returns for me { "ok": 1, "n": 1, "opTime": { "ts": "6361004504208375809", "t": 5 }, "electionId": "7fffffff0000000000000005" }

                  – user1709076
                  Dec 6 '16 at 15:08













                  77














                  A shorter way than using second parameter for the callback of collection.insert would be using objectToInsert._id that returns the _id (inside of the callback function, supposing it was a successful operation).



                  The Mongo driver for NodeJS appends the _id field to the original object reference, so it's easy to get the inserted id using the original object:



                  collection.insert(objectToInsert, function(err){
                  if (err) return;
                  // Object inserted successfully.
                  var objectId = objectToInsert._id; // this will return the id of object inserted
                  });





                  share|improve this answer





















                  • 4





                    Very insightful thank you. Couldn't find this information anywhere else since the change in callback parameters.

                    – Brad Hein
                    Jul 26 '15 at 18:39











                  • @BradHein You're welcome! Probably the MongoDB driver modifies the object reference, so it gets modified here too. :)

                    – Ionică Bizău
                    Jul 27 '15 at 4:25











                  • Your code is wrong, where you say var objectId = objectToInsert._id; you meant to say var objectId = objectInserted._id;

                    – Andy Lorenz
                    Jul 28 '15 at 13:48








                  • 3





                    @AndyLorenz What is objectInserted? I guess you're missing exactly the point of this answer: the Mongo driver appends the _id field to the original object. I edited the answer to use objectToInsert everywhere. Hope the things are clearer now. :)

                    – Ionică Bizău
                    Jul 28 '15 at 18:50






                  • 1





                    NOTE: insert() is deprecated. Use insertOne() instead

                    – evilReiko
                    Nov 24 '16 at 12:07
















                  77














                  A shorter way than using second parameter for the callback of collection.insert would be using objectToInsert._id that returns the _id (inside of the callback function, supposing it was a successful operation).



                  The Mongo driver for NodeJS appends the _id field to the original object reference, so it's easy to get the inserted id using the original object:



                  collection.insert(objectToInsert, function(err){
                  if (err) return;
                  // Object inserted successfully.
                  var objectId = objectToInsert._id; // this will return the id of object inserted
                  });





                  share|improve this answer





















                  • 4





                    Very insightful thank you. Couldn't find this information anywhere else since the change in callback parameters.

                    – Brad Hein
                    Jul 26 '15 at 18:39











                  • @BradHein You're welcome! Probably the MongoDB driver modifies the object reference, so it gets modified here too. :)

                    – Ionică Bizău
                    Jul 27 '15 at 4:25











                  • Your code is wrong, where you say var objectId = objectToInsert._id; you meant to say var objectId = objectInserted._id;

                    – Andy Lorenz
                    Jul 28 '15 at 13:48








                  • 3





                    @AndyLorenz What is objectInserted? I guess you're missing exactly the point of this answer: the Mongo driver appends the _id field to the original object. I edited the answer to use objectToInsert everywhere. Hope the things are clearer now. :)

                    – Ionică Bizău
                    Jul 28 '15 at 18:50






                  • 1





                    NOTE: insert() is deprecated. Use insertOne() instead

                    – evilReiko
                    Nov 24 '16 at 12:07














                  77












                  77








                  77







                  A shorter way than using second parameter for the callback of collection.insert would be using objectToInsert._id that returns the _id (inside of the callback function, supposing it was a successful operation).



                  The Mongo driver for NodeJS appends the _id field to the original object reference, so it's easy to get the inserted id using the original object:



                  collection.insert(objectToInsert, function(err){
                  if (err) return;
                  // Object inserted successfully.
                  var objectId = objectToInsert._id; // this will return the id of object inserted
                  });





                  share|improve this answer















                  A shorter way than using second parameter for the callback of collection.insert would be using objectToInsert._id that returns the _id (inside of the callback function, supposing it was a successful operation).



                  The Mongo driver for NodeJS appends the _id field to the original object reference, so it's easy to get the inserted id using the original object:



                  collection.insert(objectToInsert, function(err){
                  if (err) return;
                  // Object inserted successfully.
                  var objectId = objectToInsert._id; // this will return the id of object inserted
                  });






                  share|improve this answer














                  share|improve this answer



                  share|improve this answer








                  edited Jul 29 '15 at 9:23

























                  answered Jan 23 '13 at 14:29









                  Ionică BizăuIonică Bizău

                  59.3k57202351




                  59.3k57202351








                  • 4





                    Very insightful thank you. Couldn't find this information anywhere else since the change in callback parameters.

                    – Brad Hein
                    Jul 26 '15 at 18:39











                  • @BradHein You're welcome! Probably the MongoDB driver modifies the object reference, so it gets modified here too. :)

                    – Ionică Bizău
                    Jul 27 '15 at 4:25











                  • Your code is wrong, where you say var objectId = objectToInsert._id; you meant to say var objectId = objectInserted._id;

                    – Andy Lorenz
                    Jul 28 '15 at 13:48








                  • 3





                    @AndyLorenz What is objectInserted? I guess you're missing exactly the point of this answer: the Mongo driver appends the _id field to the original object. I edited the answer to use objectToInsert everywhere. Hope the things are clearer now. :)

                    – Ionică Bizău
                    Jul 28 '15 at 18:50






                  • 1





                    NOTE: insert() is deprecated. Use insertOne() instead

                    – evilReiko
                    Nov 24 '16 at 12:07














                  • 4





                    Very insightful thank you. Couldn't find this information anywhere else since the change in callback parameters.

                    – Brad Hein
                    Jul 26 '15 at 18:39











                  • @BradHein You're welcome! Probably the MongoDB driver modifies the object reference, so it gets modified here too. :)

                    – Ionică Bizău
                    Jul 27 '15 at 4:25











                  • Your code is wrong, where you say var objectId = objectToInsert._id; you meant to say var objectId = objectInserted._id;

                    – Andy Lorenz
                    Jul 28 '15 at 13:48








                  • 3





                    @AndyLorenz What is objectInserted? I guess you're missing exactly the point of this answer: the Mongo driver appends the _id field to the original object. I edited the answer to use objectToInsert everywhere. Hope the things are clearer now. :)

                    – Ionică Bizău
                    Jul 28 '15 at 18:50






                  • 1





                    NOTE: insert() is deprecated. Use insertOne() instead

                    – evilReiko
                    Nov 24 '16 at 12:07








                  4




                  4





                  Very insightful thank you. Couldn't find this information anywhere else since the change in callback parameters.

                  – Brad Hein
                  Jul 26 '15 at 18:39





                  Very insightful thank you. Couldn't find this information anywhere else since the change in callback parameters.

                  – Brad Hein
                  Jul 26 '15 at 18:39













                  @BradHein You're welcome! Probably the MongoDB driver modifies the object reference, so it gets modified here too. :)

                  – Ionică Bizău
                  Jul 27 '15 at 4:25





                  @BradHein You're welcome! Probably the MongoDB driver modifies the object reference, so it gets modified here too. :)

                  – Ionică Bizău
                  Jul 27 '15 at 4:25













                  Your code is wrong, where you say var objectId = objectToInsert._id; you meant to say var objectId = objectInserted._id;

                  – Andy Lorenz
                  Jul 28 '15 at 13:48







                  Your code is wrong, where you say var objectId = objectToInsert._id; you meant to say var objectId = objectInserted._id;

                  – Andy Lorenz
                  Jul 28 '15 at 13:48






                  3




                  3





                  @AndyLorenz What is objectInserted? I guess you're missing exactly the point of this answer: the Mongo driver appends the _id field to the original object. I edited the answer to use objectToInsert everywhere. Hope the things are clearer now. :)

                  – Ionică Bizău
                  Jul 28 '15 at 18:50





                  @AndyLorenz What is objectInserted? I guess you're missing exactly the point of this answer: the Mongo driver appends the _id field to the original object. I edited the answer to use objectToInsert everywhere. Hope the things are clearer now. :)

                  – Ionică Bizău
                  Jul 28 '15 at 18:50




                  1




                  1





                  NOTE: insert() is deprecated. Use insertOne() instead

                  – evilReiko
                  Nov 24 '16 at 12:07





                  NOTE: insert() is deprecated. Use insertOne() instead

                  – evilReiko
                  Nov 24 '16 at 12:07











                  11














                  I actually did a console.log() for the second parameter in the callback function for insert. There is actually a lot of information returned apart from the inserted object itself. So the code below explains how you can access it's id.



                  collection.insert(objToInsert, function (err, result){
                  if(err)console.log(err);
                  else {
                  console.log(result["ops"][0]["_id"]);
                  // The above statement will output the id of the
                  // inserted object
                  }
                  });





                  share|improve this answer





















                  • 1





                    thanks :) this worked for me

                    – Aayushi
                    Jul 13 '17 at 9:50











                  • this should be marked as the correct response

                    – user1709076
                    Jul 27 '17 at 12:04
















                  11














                  I actually did a console.log() for the second parameter in the callback function for insert. There is actually a lot of information returned apart from the inserted object itself. So the code below explains how you can access it's id.



                  collection.insert(objToInsert, function (err, result){
                  if(err)console.log(err);
                  else {
                  console.log(result["ops"][0]["_id"]);
                  // The above statement will output the id of the
                  // inserted object
                  }
                  });





                  share|improve this answer





















                  • 1





                    thanks :) this worked for me

                    – Aayushi
                    Jul 13 '17 at 9:50











                  • this should be marked as the correct response

                    – user1709076
                    Jul 27 '17 at 12:04














                  11












                  11








                  11







                  I actually did a console.log() for the second parameter in the callback function for insert. There is actually a lot of information returned apart from the inserted object itself. So the code below explains how you can access it's id.



                  collection.insert(objToInsert, function (err, result){
                  if(err)console.log(err);
                  else {
                  console.log(result["ops"][0]["_id"]);
                  // The above statement will output the id of the
                  // inserted object
                  }
                  });





                  share|improve this answer















                  I actually did a console.log() for the second parameter in the callback function for insert. There is actually a lot of information returned apart from the inserted object itself. So the code below explains how you can access it's id.



                  collection.insert(objToInsert, function (err, result){
                  if(err)console.log(err);
                  else {
                  console.log(result["ops"][0]["_id"]);
                  // The above statement will output the id of the
                  // inserted object
                  }
                  });






                  share|improve this answer














                  share|improve this answer



                  share|improve this answer








                  edited Jun 19 '15 at 0:24

























                  answered Jun 19 '15 at 0:19









                  SidakSidak

                  147110




                  147110








                  • 1





                    thanks :) this worked for me

                    – Aayushi
                    Jul 13 '17 at 9:50











                  • this should be marked as the correct response

                    – user1709076
                    Jul 27 '17 at 12:04














                  • 1





                    thanks :) this worked for me

                    – Aayushi
                    Jul 13 '17 at 9:50











                  • this should be marked as the correct response

                    – user1709076
                    Jul 27 '17 at 12:04








                  1




                  1





                  thanks :) this worked for me

                  – Aayushi
                  Jul 13 '17 at 9:50





                  thanks :) this worked for me

                  – Aayushi
                  Jul 13 '17 at 9:50













                  this should be marked as the correct response

                  – user1709076
                  Jul 27 '17 at 12:04





                  this should be marked as the correct response

                  – user1709076
                  Jul 27 '17 at 12:04











                  10














                  As ktretyak said, to get inserted document's ID best way is to use insertedId property on result object. In my case result._id didn't work so I had to use following:



                  db.collection("collection-name")
                  .insertOne(document)
                  .then(result => {
                  console.log(result.insertedId);
                  })
                  .catch(err => {
                  // handle error
                  });


                  It's the same thing if you use callbacks.






                  share|improve this answer




























                    10














                    As ktretyak said, to get inserted document's ID best way is to use insertedId property on result object. In my case result._id didn't work so I had to use following:



                    db.collection("collection-name")
                    .insertOne(document)
                    .then(result => {
                    console.log(result.insertedId);
                    })
                    .catch(err => {
                    // handle error
                    });


                    It's the same thing if you use callbacks.






                    share|improve this answer


























                      10












                      10








                      10







                      As ktretyak said, to get inserted document's ID best way is to use insertedId property on result object. In my case result._id didn't work so I had to use following:



                      db.collection("collection-name")
                      .insertOne(document)
                      .then(result => {
                      console.log(result.insertedId);
                      })
                      .catch(err => {
                      // handle error
                      });


                      It's the same thing if you use callbacks.






                      share|improve this answer













                      As ktretyak said, to get inserted document's ID best way is to use insertedId property on result object. In my case result._id didn't work so I had to use following:



                      db.collection("collection-name")
                      .insertOne(document)
                      .then(result => {
                      console.log(result.insertedId);
                      })
                      .catch(err => {
                      // handle error
                      });


                      It's the same thing if you use callbacks.







                      share|improve this answer












                      share|improve this answer



                      share|improve this answer










                      answered Feb 24 '17 at 21:45









                      SerjuiceSerjuice

                      321210




                      321210























                          5














                          Mongo sends the complete document as a callbackobject so you can simply get it from there only.



                          for example



                          collection.save(function(err,room){
                          var newRoomId = room._id;
                          });





                          share|improve this answer




























                            5














                            Mongo sends the complete document as a callbackobject so you can simply get it from there only.



                            for example



                            collection.save(function(err,room){
                            var newRoomId = room._id;
                            });





                            share|improve this answer


























                              5












                              5








                              5







                              Mongo sends the complete document as a callbackobject so you can simply get it from there only.



                              for example



                              collection.save(function(err,room){
                              var newRoomId = room._id;
                              });





                              share|improve this answer













                              Mongo sends the complete document as a callbackobject so you can simply get it from there only.



                              for example



                              collection.save(function(err,room){
                              var newRoomId = room._id;
                              });






                              share|improve this answer












                              share|improve this answer



                              share|improve this answer










                              answered Sep 2 '14 at 5:25









                              Saurabh Chandra PatelSaurabh Chandra Patel

                              6,01815162




                              6,01815162























                                  4














                                  Now you can use insertOne method and in promise's result.insertedId






                                  share|improve this answer
























                                  • Could you provide a code example? Where does this result object come from?

                                    – JSideris
                                    Sep 20 '16 at 22:00











                                  • @JSideris, as you can see in the specification method insertOne(), this method accepts three parameters (doc, options, callback). The third parameter - a callback, which takes two parameters (error, result). And result - this is what you are looking for.

                                    – ktretyak
                                    Sep 21 '16 at 0:10


















                                  4














                                  Now you can use insertOne method and in promise's result.insertedId






                                  share|improve this answer
























                                  • Could you provide a code example? Where does this result object come from?

                                    – JSideris
                                    Sep 20 '16 at 22:00











                                  • @JSideris, as you can see in the specification method insertOne(), this method accepts three parameters (doc, options, callback). The third parameter - a callback, which takes two parameters (error, result). And result - this is what you are looking for.

                                    – ktretyak
                                    Sep 21 '16 at 0:10
















                                  4












                                  4








                                  4







                                  Now you can use insertOne method and in promise's result.insertedId






                                  share|improve this answer













                                  Now you can use insertOne method and in promise's result.insertedId







                                  share|improve this answer












                                  share|improve this answer



                                  share|improve this answer










                                  answered Jul 28 '16 at 8:34









                                  ktretyakktretyak

                                  3,99942141




                                  3,99942141













                                  • Could you provide a code example? Where does this result object come from?

                                    – JSideris
                                    Sep 20 '16 at 22:00











                                  • @JSideris, as you can see in the specification method insertOne(), this method accepts three parameters (doc, options, callback). The third parameter - a callback, which takes two parameters (error, result). And result - this is what you are looking for.

                                    – ktretyak
                                    Sep 21 '16 at 0:10





















                                  • Could you provide a code example? Where does this result object come from?

                                    – JSideris
                                    Sep 20 '16 at 22:00











                                  • @JSideris, as you can see in the specification method insertOne(), this method accepts three parameters (doc, options, callback). The third parameter - a callback, which takes two parameters (error, result). And result - this is what you are looking for.

                                    – ktretyak
                                    Sep 21 '16 at 0:10



















                                  Could you provide a code example? Where does this result object come from?

                                  – JSideris
                                  Sep 20 '16 at 22:00





                                  Could you provide a code example? Where does this result object come from?

                                  – JSideris
                                  Sep 20 '16 at 22:00













                                  @JSideris, as you can see in the specification method insertOne(), this method accepts three parameters (doc, options, callback). The third parameter - a callback, which takes two parameters (error, result). And result - this is what you are looking for.

                                  – ktretyak
                                  Sep 21 '16 at 0:10







                                  @JSideris, as you can see in the specification method insertOne(), this method accepts three parameters (doc, options, callback). The third parameter - a callback, which takes two parameters (error, result). And result - this is what you are looking for.

                                  – ktretyak
                                  Sep 21 '16 at 0:10













                                  1














                                  @JSideris, sample code for getting insertedId.



                                  db.collection(COLLECTION).insertOne(data, (err, result) => {
                                  if (err)
                                  return err;
                                  else
                                  return result.insertedId;
                                  });





                                  share|improve this answer




























                                    1














                                    @JSideris, sample code for getting insertedId.



                                    db.collection(COLLECTION).insertOne(data, (err, result) => {
                                    if (err)
                                    return err;
                                    else
                                    return result.insertedId;
                                    });





                                    share|improve this answer


























                                      1












                                      1








                                      1







                                      @JSideris, sample code for getting insertedId.



                                      db.collection(COLLECTION).insertOne(data, (err, result) => {
                                      if (err)
                                      return err;
                                      else
                                      return result.insertedId;
                                      });





                                      share|improve this answer













                                      @JSideris, sample code for getting insertedId.



                                      db.collection(COLLECTION).insertOne(data, (err, result) => {
                                      if (err)
                                      return err;
                                      else
                                      return result.insertedId;
                                      });






                                      share|improve this answer












                                      share|improve this answer



                                      share|improve this answer










                                      answered Nov 16 '18 at 8:05









                                      Pyae SonePyae Sone

                                      283313




                                      283313























                                          0














                                          if you want to take "_id" use simpley



                                          result.insertedId.toString() 


                                          // toString will convert from hex






                                          share|improve this answer




























                                            0














                                            if you want to take "_id" use simpley



                                            result.insertedId.toString() 


                                            // toString will convert from hex






                                            share|improve this answer


























                                              0












                                              0








                                              0







                                              if you want to take "_id" use simpley



                                              result.insertedId.toString() 


                                              // toString will convert from hex






                                              share|improve this answer













                                              if you want to take "_id" use simpley



                                              result.insertedId.toString() 


                                              // toString will convert from hex







                                              share|improve this answer












                                              share|improve this answer



                                              share|improve this answer










                                              answered Jan 15 at 18:27









                                              dewelloperdewelloper

                                              16715




                                              16715






























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