MongoDB and Mongoose | Creating a REST API with Node.js

[@thierrykas1528]

If you're a new folk, remember to use at 24:35 ---Product.deleteOne({ _id: id })--- instead of remove and at 28:52 use ---Product.updateOne({ _id: id }, {$set: updateOps})--- instead of update, Thanks Max!

[@sephiroLord]

Thank you Sir! much appreciated!

[@SteveLewis2024]

Annoyingly, I d found this comment after looking at the Mongo forum -_-

[@unaisulhadi9102]

3 Years later, Still this one is the best Node REST tutorial on Internet. ❤❤❤

[@ragunath_br]

Its still the best one I have seen too.. And its been 6 years now..

[@hyojungyu1667]

For the patch request in 2021, you can simplify the code as below. ;) router.patch('/:id', (req, res, next) => { const id = req.params.id; Product.findByIdAndUpdate(id, { $set: req.body }, { new: true}) .then(result => res.status(200).json(result)) .catch(err => res.status(500).json({ error: err})) })

[@izzy7402]

helpful, thanks man

[@matthewrideout426]

great - thanks :)

[@ganeshan56]

instead of set, we can also use the extend function from lodash package.

[@dr.franxx]

thank you

[@burhanali7449]

Thanks

[@dorukoktay1054]

Great tutorial Max you are the best!! I used async-await synax instead of then() and catch() functions and it worked. For example; router.patch('/:productId', async (req, res, next) => { const props = req.body; try { const result = await Product.update({_id: req.params.productId}, props).exec(); console.log(result); res.status(200).json(result); } catch (e) { console.log(e); res.status(500).json(e); } });

[@mikaeledebro1144]

Great tutorial Max. Best teacher on YT. Just a small improvement. For the PATCH, I think this is a cleaner solution: const updateOps = {} for (const key of Object.keys(req.body)) { updateOps[key] = req.body[key] } This way you can keep the request simple (same as POST).

[@alihasana2009]

Thanks Mikeal

[@darshu62]

MAX code didnt work for me, but your code did. Thanks Mikael...

You also can use for ... in to avoid Object.keys(req.body). so the code is: for (const key in req.body) { updateOps[key] = req.body[key]; }

[@5timeslllll]

Thanks Max. For PATCH, I have a much better solution: const props = req.body; Product.update({_id: productId}, props); That’s it! It works like a charm, whether one prop has been passed or multiple.

[@ruslanuchan8880]

Loved this!

[@moviejungle1430]

Nice!

[@madarauchiha6290]

thanks :)

[@caloriecoin]

Thank you!

[@fabio4079]

Explain? I can't make it patch here.

[@mikemalone4867]

Fantastic work, sir! I have searched high and low for someone to explain how to write an Endpoint with Node.js without assuming that we know all of the jargon that goes along with it. Most of the time, I see examples with what looks like reserved words only to find out that they are not. I would spend hours trying to find out where the examples obtained the values from that were used in the functions etc. This is clear and easy to understand. Good code is easy to read and easy to write and you are doing just that! Thank you!

[@academind]

Thanks a lot for your wonderful feedback Mike, it really makes me happy to read that the video was understandable and helpful :)

[@MarcosLopez-bs6xr]

This is the only REST tutorial where I don't have to stress over the configuration thank you!

[@tonhuu7132]

Very easy to understand and explain in detail. Thanks Max!

[@academind]

Glad it was helpful!

[@harsh7809]

24:26 If you are having problems with delete functionality, try this remove() is depreciated, you should use deleteOne() router.delete('/:productId', (req, res, next) => { id = req.params.productId; Product.deleteOne({ _id: id }) .exec() .then(result => { console.log(); if (result.deletedCount > 0) { res.status(200).json({ message: "Deleted Successfully" }); } else res.status(500).json({ error: "No ID Found" }); }) .catch(error => { res.status(500).json({ error: error }); }); });

[@mawalibhai636]

Thanks

[@lilithfirefly3727]

really helpful thanks. I saw many other newer videos but this one is the best

[@ificouldfly4874]

7:58: you need to replace {useMongoClient: true} by { useNewUrlParser: true, useUnifiedTopology: true } + don't forget to restart your nodejs server

[@ificouldfly4874]

@@internet4543 ty Captain Obvious

[@sagarkumar0711]

When I try to connect the mongodb via URL string it is working fine, but if I use + process.env.MONGO_ATLAS_PW + and accessing this environment variable from the nodemon.js file as shown in the video I am getting Error as below : (node:17036) UnhandledPromiseRejectionWarning: MongoError: bad auth Authentication failed. at _authenticateSingleConnection (D: ode-rest-shop ode_modules\mongodb\lib\core\auth\auth_provider.js:46:25) at sendAuthCommand (D: ode-rest-shop ode_modules\mongodb\lib\core\auth\scram.js:215:18) at Connection.messageHandler (D: ode-rest-shop ode_modules\mongodb\lib\core\connection\connect.js:334:5) at Connection.emit (events.js:198:13) at processMessage (D: ode-rest-shop ode_modules\mongodb\lib\core\connection\connection.js:364:10) at TLSSocket. (D: ode-rest-shop ode_modules\mongodb\lib\core\connection\connection.js:533:15) at TLSSocket.emit (events.js:198:13) at addChunk (_stream_readable.js:288:12) at readableAddChunk (_stream_readable.js:269:11) at TLSSocket.Readable.push (_stream_readable.js:224:10) at TLSWrap.onStreamRead [as onread] (internal/stream_base_commons.js:94:17) (node:17036) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). (rejection id: 1) (node:17036) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code. So if you know why I am getting this help me out. Thanks in advance!! :)

[@MrWezra]

@@sagarkumar0711 Did you get a fix for this?

[@gugulothvijaynayak4350]

@@sagarkumar0711 How to fix? Did you get any solution? Help me out

[@gugulothvijaynayak4350]

@@MrWezra Any solution? how to fix it?

[@odorlessflavorless]

You are amazing Max ! Though you have made a recent video about learning, I definitely would like you share more about learning so that the basics are solidified. Your lectures prove you have a clear grasp on the fundamentals of topics that you teach.

[@academind]

Thank you Ananta, I might indeed release such videos from time to time in the future :)

[@michaeltrembovler8301]

The best explanation I've only listened to from anyone !!! Many thanks.

[@TheMaxik]

Man you are incredible. I have trouble understanding things and you explain things so well that I'm advancing on this course very fast. Thanks!!!

[@academind]

Just awesome to read that, thanks a lot for your comment!

[@codinginflow]

I noticed that MongoDB adds the ObjectId automatically if you don't pass it

[@realdotty5356]

Ok

[@Bod88]

Your videos have forced me to start finally using modules...and I am grateful for it. T hank you.

[@academind]

So great to read that Bod, thank you for your comment!

[@israelruas948]

Great, I am using MongoDB online and it is working super well. Thank you

[@shiva_tharun]

Awesome Max! Thanks! Yesterday I purchased your ReactJs course at Udemy, will start with it soon. Thanks for everything.. =)

[@hcx1853]

Tharun Shiv Did the same as well. Looking forward to the course. And your Vue.js course too.

[@academind]

Thank YOU guys for your awesome support! Great to have you on board of the course, I really hope that you will like it :)

[@luckystarsakkeer1312]

@@academind Hi, Max. Can you upload another step by step playlist. How to implement ORM with mySQL into Node Js project. It's my request. :). i'm waiting for your reply, Or refer me some tutorials for this. I'm new to Node Js. I'm working as a Front end developer. Now I started the Back End Development. Your RESTful API tutorial was awesome and very clear. I want to use mysql in my project. Still I couldn't get the perfect tutorial for my problem.

[@Sledno1]

There is another possible way to delete by id, you can use: Product.findByIdAndRemove(productId) .then(result => { // Send result }) .catch(err => { // Handle error }); This one returns the document as the result. By the way thanks for this course, it has helped me a lot! :)

[@mekonnenhaileslassie5651]

words in the comment can't express what u are doing! But i wanna tell u that u have to proud of your self b/c u are changing life of many people! You are really amusing person!

[@jameswaring6200]

You have a really great way of explaining things!

[@nicola123ste]

Top teacher in the Internet. I am taking his React course on Udemy too. Can you please add the mySQL version too?

[@danielblank9917]

Your tutorials are great, giving likes for all of them! If I could say one thing, could you disable the documentation popups in vscode as it's a bit distracting and blocks the text

[@rotrose7531]

Thank you very much, possibly best rest api tutorials I can find on youtube.

[@chagantisubhash]

I downloaded these videos, kept them in a folder and now using them as a reference. Thanks alot!! I'll for sure buy Angular 6 complete guide course of yours in Udemy.

[@academind]

Awesome! Welcome on board of the Udemy course, too! :-)

[@udaipman7761]

26:27 my product is not delete successfully. Instead of remove method I used deleteOne because remove method is not valid anymore.

[@udaipman7761]

I solved this issue by Const productId = req.params.id.toString().trim(); Now it works but I don't know why

[@bomaspeedy2302]

Thanks it works for me now ( deleteOne)

[@Rallek]

Thank you for making such incredible tutorials. You are a great teacher!

[@academind]

So happy to read that Rallek, thank you very much for this awesome feedback!

[@user-zb5jp4ti1d]

i have always been struggling with the difference betn schema and model and how they fit together... until now though - key breakthrough for me around the 11:00 mark: "you export the schema wrapped in a model..." As always, thanks so much, Max... You are, in the words of Yuval Harari, a Homo Deus.

[@academind]

That's so awesome to read Ashim, thank you very much for sharing this! Really happy to read that I could help making things clearer for you :)

[@kumarsen88]

Having been primarily a Pythonista with some Scala Development experience, I have to admit that node consumes the Functional approach (partial functions, currying, map, filter etc) most effortlessly. Idk how many actually noticed that throughout the tutorial :)

[@npip99]

22:10 Bit of a suggestion for better status code returns, status code 500 should be for an internal error, as stated by postman. Malformed input is supposed to return status code 400 (Bad Request).

[@academind]

Thanks for sharing this improvement, much appreciated!

[@luigivampa9780]

Hey Max! I found your course really compelling. Thank you

[@academind]

Thanks a lot for your comment Luigi, happy to read that you liked the course!

[@StackMentor]

#Academind this is the best tutorial over all this years since you created this playlist most people don't cove the fundamentals and authentication they use some dummy data from routes so far this the best i watched it like 5 times while i was doing node

[@hamzaayech5966]

You are so good at teaching people, please keep going ♥

[@academind]

It's really great to read that you like my teaching style, I'll try my best to keep it going Hamza!

[@SARAVANAKUMARPS]

Though I subscribed to this channel and enabled notification, I come daily to check whether the next video has arrived or not! Thanks for the awesome series and you are the best tutor/mentor whatever!. Is there any plan on teaching complete Node Js and JWT.

[@academind]

Thank YOU for your amazing feedback, I'm happy to hear you're liking the content on this channel! I will also show how to implement Authentication with JWT in this series, yes

[@benstuijts5620]

Why not using your error middleware for handling your errors? This will produce less same code... ;-) Great series btw!

[@tayfoooooor]

Great tutorial, Simple & Quick

[@academind]

Thank you so much for your great feedback Mahmoud!

[@dmitry4638]

By any reason the patch request doesn't work with this body: [ {"propName": "name", "price": "15000000"} ] it says: { "error": { "message": "req.body is not iterable" } }

[@gabrieljoshuapaet2572]

First of all really great tutorials from you Max! Will you be creating a series dedicated to mongodb and mongoose?

[@academind]

Thanks so much, happy to hear you liked it! Such a series is definitely possible, yes :)

[@esericsu]

wow this is really really good. Please keep making more

[@ajaytiwari715]

24:41: replace remove with deleteOne as remove method is deprecated.

[@WatDiggityDawg]

to be fair this vid is from 2017

[@ajaytiwari715]

@@WatDiggityDawg yes true, but people are still learning from these videos and they may face difficulty due deprecated functions so like few others who have shared solution for bug or error i also shared..

[@ebratz]

at 2019, you can use findOneAndUpdate which is smart enough to understand the parameters it should update on PATCH/PUT. No need to loop ops to filter. Also, needed to use some mongoose options: useNewUrlParser: true, useCreateIndex: true, useFindAndModify: false

[@khalidebrahim6086]

Thank you from Egypt 💙

[@J0pain]

Why the "_id" in the productSchema isn't it there by default ?

[@mohsenmadi3590]

Actually, adding it gave me an error "TypeError: Undefined type `ObjectID` at `_id`". Removing it worked fine - at least for now.

[@marianeppinheiro]

me too =/

[@marianeppinheiro]

Actually I just fixed it, check out if you are not instanciating the objectID type on the schema. that was my mistake.

[@luciusrex]

use const productSchema = mongoose.Schema({ _id: mongoose.Schema.Types.ObjectId, name: String, price: Number });

[@rajatdhoot5936]

Awesome tutorial Really great help to understand and build Rest Api from scratch

[@academind]

Thanks so much, great to hear you enjoyed it Rajat!

[@codinginflow]

Tip: In the newer versions of Node you don't have to type --save anymore. It's the default behavior now.

[@dusnen]

If you are having problem for PATCH request, use this: router.patch("/:productId", (req, res, next) => { Product.updateOne({ _id: req.params.productId }, { $set: req.body }) .exec() .then(result => { res.status(200).json({ message: "Updated successfully" }); }) .catch(err => { console.log(err); error: err; }); }); it works for me

[@gofudgeyourselves9024]

Thanks a lot man

[@zaloaustine]

Saved me after lots of hours of research and code re-writing

[@AbdulMajeedShehzad]

Thank you so so much Max! i have learned to create Rest Api from some other channel and it was nice but no one can reach your level! the way you explain each and every thing is very awesome ... a lot of things needed explanation in that course but you explain each and every line in a way that we don't need any more explanations. One thing that i love the most of you is that you reply to each and every comment and this really show your concern with your students this shows that you really care about your every single student and not like many other youtubers who only care for their views! You are the best teacher i ever had! Love from Pakistan Another thing, you mentioned in this lecture that you will teach how to create API with MySql, where is that ? i have searched your channel but could not found it. if you have not created that yet then please create it i badly need that to learn.

[@mateusloubach]

Max, I have finished this project and wanted to set it up with a front-end webpage (single page) on Heroku. However, Heroku doesn't provide an add-on (other than MongoDBs newly acquired mLab add-on for databasing) and MongoDB doesn't provide this service. I was wondering HOW can we set it up on the front-end webpage in order to use the database created with this course. Thank you so much for sharing such knowledge and I've got to say, this has been THE BEST teaching by far I have EVER had. will definitely keep learning with you! Cheers!

[@felipesecato1013]

Awesome tutorials. It is helping a lot Greetings from Brazil

[@academind]

Very happy to read that the videos are helpful for you Felipe, thank you for sharing this, greetings from Germany :)

[@jakubrpawlowski]

Great video as always Max! Thank you again!

[@academind]

Thanks so much Jakub!

[@Alex-jy8ze]

I encountered some error at 15:03 using the local mongodb and I don't know how to fix it error: C:\API2 ode-rest-shop ode_modules\mongodb\lib\connection_string.js:273 throw new error_1.MongoParseError(`${optionWord} ${Array.from(unsupportedOptions).join(', ')} ${isOrAre} not supported`); ^

[@brianwahome5789]

Though optional, kindly review the invariant, Should be if (doc.length > 0), not (doc.length >= 0)

[@vinothkumarv9722]

Its really very good good session i love its the way of explanation and good quality content :) love you msir.

[@daniell2774]

At the 28:08 time stamp; there's if(docs.length >= 0) { do stuff }. To my understanding that will always be true if there's no entries in the products. Shouldn't it be if(docs.length >= 1) { there's at least one or more entry -> show entry/entries.} ELSE { show the 404 error along with the message } Please correct me if I'm wrong!

[@balporsugu7198]

yeah i agree with you. he missed it because as he mentioned he does not consider that situation as an error.

[@mihaidraghicescu1020]

Great series! Will you make a short tutorial with REST API and MYSQL ?

[@academind]

Thanks so much, I'm glad you're liking it! I might add MySQL in the future, got no concrete plans on that right now though.

[@marcelonogueira8544]

kzbin.info/aero/PLFJmwzuHdBRTBbkyH0gATtDhj6ikOIkMy

[@qhpfr1]

Awesome I am waiting for a lesson on how to security the service(API) secure the API by JWT or etc..... thanks Man

[@academind]

It'll be included in this series, no worries!

[@amitbhandari8347]

While deleting, to remove object you need to use array splice function. It will not give you empty [ ]

[@mavisakal77]

Great tutorial but I would suggest Model.findByIdAndRemove(req.params.id).exec().then().catch() and Model.findByIdAndUpdate(req.params.id, req.body, {new: true}).exec().then().catch() for delete and update. Much easier and clean to implement.

[@dhananjayfarmaha3041]

hey i am following your tutorial...everything was working fine until at 19:00..i am getting no response ..it just shows "loading..." message in postman and nothing is being displayed on the terminal window as well. Please help, i've been googling it for almost a week now and found nothing helpfull. Thank you

[@dhananjayfarmaha3041]

my ".then()" promise is not getting executed...and if i enter a wrong id, then the error handled by catch block is getting executed correctly

[@nataliexsl1]

@@dhananjayfarmaha3041 did you solved it?

[@pdxJaxon]

Im having the exact same issue.....any resolution? router.get('/:prospectId', (req,resp,next) => { const id = req.params.prospectId; console.log("Valid",mongoose.Types.ObjectId.isValid(id)); Prospect.findById(id) .exec(console.log("EXEC")) .then(data =>{ console.log("I DIE HERE...."); resp.status(200).json(data); }) .catch(err =>{ console.log(err); resp.status(500).json({ Message:err, id:id, Valid:mongoose.Types.ObjectId.isValid(id)}) });

[@ngyi3553]

What keyboard shortcut do you use to restructure the chain methods?

[@DuyTran-ss4lu]

This man is a legend

[@Angela13111]

Hi, Anyone that will get this error: (node:2096) UnhandledPromiseRejectionWarning: MongoParseError: option usemongoclient is not supported at Object.parseOptions just delete the line: usemongoclient = true; in the apps.js file. took me 3 days to figure it out hope it will assist someone else.

[@GolemShadowsun]

You saved me just HOURS of debugging.

[@sarasherif7834]

Great videos in node.js :) I have question, why did you added _id in schem ? I know it generate automatically

[@NepalReddyChityala]

To match the object property set on product.

[@Sun1ive]

Thank you very much for your lessons Max. Really appreciate it!

[@academind]

Thank YOU for your comment, so happy to read that you like the videos!

[@rhandect]

Thank you so much, you have helped guide me in the right direction for my project :)

[@starboy5765]

Awesome tutorial Max! But Unfortunately got stuck when sending this POST request at 15:45, it shows me an error. "error": { "message": "Product is not a constructor" }

[@cavinalbertbelga5090]

Same, did you find a fix?

[@captainzerodegree8162]

You probably missing module export from product model

[@santiagorestrepo4874]

make sure your export sentence in product.js is module.exports = mongoose.model('Product', productSchema) instead of module.export = mongoose.model('Product', productSchema)

[@alind9947]

What s the advantage of using .then and .catch at 14:10 when you save a product instead of a callback? You basically do the same thing you would do with a callback as in getting the result and handling the error only that with .then and .catch you even type more lines of code.

[@nanminkone]

Nice Nice Nice...My project saw life because of this video

[@rabiashah9686]

I love you for this awesome explanation!! hats off to you! you saved my day!!

[@academind]

So amazing to hear that, thank you so much Rabia!

[@amilab682]

How to solve this? UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch().

[@MrWezra]

did you solve this?

[@mylastore]

I just purchase your node.js on udemy just because you where born to teach and I am sure I will learn more from that as well as this. Have a question. Is there a reason to create the id on the model? since Mongo generates one automatically anyways.

[@jeanpaulgiraldo]

When I followed the video Mongoose is on version 5.1.1. I was having problems with removing a product using Product.remove({ _id: id }) The error provided by MongoDB said: "Cannot use (or request) retryable writes with limit=0" If anyone else has this problem just replace Product.remove({ _id: id }) with Product.findByIdAndRemove(id) it worked for me

[@TheMypencil]

Thank you

[@김세경-o3i]

Thank you

[@joshuaclay1594]

Thanks so much. Development would be so much easier if there weren't the constant gotchas of changing protocols.

[@JuanFVasquez]

Thanks!! That worked perfectly

[@spectrecular9721]

*Product.deleteOne({ _id: id })* worked for me

[@marcin2x4]

In 20:52 I don't get both attributes: message and name for error prompt.

[@zenner24]

if you are using mongoose in April 2020 and get an error while trying to connect, you need to get the connection string in the MongoDb Atlas for Node.js 2.2.12 or later the second argument in the connect function should be: useNewUrlParser: true, useUnifiedTopology: true

[@asdqwe4427]

Your patch method is strange to me. Why would you pass an array of objects to a URL that takes an id? Could you not just use whatever is in the body? I tried it and it seems to work fine for me.

[@markwonder8168]

What's the shortcut to quickly refactor .exec().then().catch() to multiple lines?

[@muchvibrant]

prettier

[@tmacka88]

How were you getting null returned with a get request when you added a "d" to the end of the ID? I get the error: "Cast to ObjectId failed for value" for everything except when it finds an actual ID in the db. Am I missing something?

[@saurabhgupta6691]

yes

[@alevsoft]

Awesome tut! Thank you :)

[@Isookov]

Great series Max! Any chance doing this with bookshelf? To many tutorials work with mongoose the same things and it's a little bit repetitive. Keep going my friend! :)

[@academind]

Thanks for the great feedback and you suggestion! I haven't really worked with it so it's not that likely in the near future I'm afraid.

[@phillippham8454]

What is the hotkey he is using to reformat the .exec.then.catch chain over multiple lines?

[@buchiemmanuel26]

If you get mongoose.Types.ObjectId is not a constructor error remove the parenthesis on " _id: new mongoose.Types.ObjectId," line 15, minute 14:14

[@yatashdeepsharma203]

awesome tutorial mere bhai ... hats off u

[@abelmurua6980]

Awesome, do you have a Mongoose course?

[@bluesky6751]

23:04 how do you arrange those lines like that in VC code??

[@sriramtorvi7417]

Exactly my question.. btw... have you got the answer for that???

[@davidamado1048]

pretty cool man, thanks for this videos, I'm learning a lot with it

[@academind]

Happy to read that David, thanks a lot for your comment!

[@matiasbarrios7427]

sorry but i need some of help, when i use the post like the video in the min 15:18 i get { "error": { "message": "Product is not defined" } } i realy need help pleace :'c

[@SaiPravesh]

Very detailed and awesome explanation, thank you very much

[@confearsion3778]

_id field is not required in 2019 I guess, plz tell me is it true?

[@HAL-9000-]

diese Videos sind super, danke!

[@naptoon1578]

[14:57] *_id : mongoose.Types.ObjectId* will not throw errors anymore so no need to add Schema *( node version used : v12.14.1)* *Ps :* Works with Schema as well.

[@majs6708]

I tried with both but I get this error: "TypeError: Cannot read property 'ObjectId' of undefined " I don't know what I'm doing wrong, I did exactly like in the video :(

[@alpsenel9196]

You helped a lot !

[@intercointerface212]

At 31:40 what's with the whole rigmarole manipulating the request before patching it; could you not just { $set: res.body } instead of copying res.body into updateOps then doing what you did?

[@prashantchaudhari6183]

I think instead of using promises, async/await would be great. Yeah i know async/await are basically promises but it would help in writing cleaner code.

[@solomon4470]

I need help with the post-request session. keep getting this "error": { "message": "Cannot read property 'Types' of undefined" } not sure what's causing it.

[@agung_laksana]

max, please create mongoose course in detail :D

[@jessiezhao8742]

Really great tutorial! Wondering at around 17:10 which VSC shortkey ? did you use to restructure chained functions into multiple lines?

[@academind]

Thank you for your great feedback Jessie. I just use the "Format Document" function in VS Code (you can find it in the Keyboard Shortcuts menu).

[@zumatse]

Hi what is VSC shortcut to change inline exec().then().catch() to every function in new line?

[@academind]

I don't know what the default was but search the keybindings for "code format" or just "format"

[@vatroslavmorbidovic4105]

I got this error: UnhandledPromiseRejectionWarning: Unhandled promise rejection (rejection id: 1): MongoNetworkError: failed to connect to server [localhost:27017] on first connect [MongoNetworkError: connect ECONNREFUSED 127.0.0.1:27017] (node:3816) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code. What gives?

[@bikashranjan9585]

Same error is also appearing for me

[@martinsmuts2557]

I did the following and it seemed to work for me: 1. hardcode your password in the connection string in the app.js file and do not use the environment variable in the nodemon.json file 2. try to comment out or remove "useMongoClient: true" in app.js 3.stop the server "ctrl + C". 4. start the server with npm start again

[@tarasorevchuk6558]

mongoose.connect('mongodb:...’) .catch(error => { console.log(error) }); add catch

[@techdailyafrica]

I learnt flutter with Max, Now we're here in MongoDB