DJANGO CHANNELS 2 Tutorial (V2) - Real Time - WebSockets - Async

[@CodingEntrepreneurs]

It's 2022 -- who wants a new version of this series? Please comment below. Also here are the chapters: 0:00:00 - Welcome 0:00:49 - Requirements 0:01:38 - Install and Integrate Channels 0:05:47 - Your First Consumer 0:10:41 - Routing your WebSocket 0:17:22 - WebSocket with JavaScript 0:23:25 - Accept WebSocket Connection 0:27:08 - Users & Database Objects 0:31:09 - Sending Data with JavaScript 0:39:00 - Echo Messages 0:43:23 - Display Messages 0:50:25 - Integrate Redis 0:54:24 - Create the Chat Room 1:04:30 - Reconnect and Save

[@mateuszwojtowicz3762]

i do

[@AhmadAli-wt8zy]

plz

[@masumhasan6623]

Please make a new version of this course. Will be really helpful

[@lomic77]

It would be nice 😁

[@sarojkumarsingh2836]

Please a new version would be very helpful

[@aydencraig9542]

So thankful to find a tutorial that actually explains what is happening instead of just copying and pasting code. Thank you for this!!

[@druzhininpavel]

15:59 you should login as first superuser and go to the messages url of the second superuser. You'll get an error if you try to get Thread of the same user as logged in.

[@waseem-cybercity3536]

Thanks! I was wondering what was going on.

[@cricketinpie4491]

Send me the whole code please.... GitHub profile link??

[@cephas_knight]

thank youuu

[@darkbluewalther]

True, but how do you fix it?

[@hirumakazeko]

THANK YOU omg you saved me

[@roccociccone597]

I literally became a django pro because of this channel. Absolutely love this guy. Keep it going.

[@TaPO4eg3D]

Absolutely awesome, man! It's cool to see you doing more advanced Django tutorials. Never used Django channels before but it's a great chance to try it out. Thank you, Justin!

[@anoopkg8681]

Whenever I watch your videos, I disable my ad block, at least that's what I could do

[@syedbilalali2316]

This cleared out all the problems that I was having for a week in just an hour. Thank you

[@missionaryfamily1897]

Man I cannot believe it you're such a good teacher

[@helloworld12354]

Wow man dope! You have started to take your django tutorials on a whole new level mate! Lots of love as always and keep it up!

[@CodingEntrepreneurs]

Thanks buddy

[@cricketinpie4491]

Send me the whole code please.... GitHub profile link??

[@NphiniT]

If you're on Windows and you have problems installing channels with an error like: Microsoft Visual C++ 14 is required, Download Twisted from www.lfd.uci.edu/~gohlke/pythonlibs/#twisted. Choose the win32 one corresponding to your python version. For instance, I used Python 3.8; so I downloaded Twisted‑20.3.0‑cp38‑cp38‑win32.whl (Notice "cp38"). Once downloaded, navigate to the download folder in your command prompt and run 'pip install ' followed by the file u just downloaded. After this you can install channels or whatever. You're welcome!

[@cricketinpie4491]

Send me the whole code please.... GitHub profile link??

[@NphiniT]

@@cricketinpie4491 What code?

[@cricketinpie4491]

@@NphiniT actually I want the code which is done in this video on GitHub of cfe only the starter code is available..??

[@NphiniT]

@@cricketinpie4491 It's not exactly the same though. I watched it to revise. I'll upload it to my github now. I'll reply with the link in a bit

[@cricketinpie4491]

it would be a great help, eagerly waiting for your reply??

[@leandroalmeida971]

Excellent video. It helped me a lot in the project I'm doing, I was running after a tutorial on channels and I finally found a great one! Congratulations and may you be very successful in your projects!

[@CodingEntrepreneurs]

Thank you!

[@amruthap6334]

hey can you tell me how to install redis on my windows 10

[@maimunarahman7837]

me too

[@sarthakgawri]

@@amruthap6334 Use docker desktop and follow the channels documentation

[@sarthakgawri]

@@maimunarahman7837 Docker desktop

[@mobileplay5487]

Very good tutorial on django channels with step by step guide. Thank you!

[@tejasmandre666]

Hey man ! This was awesome. I really wondered what you exactly talking about at first, but then later I watched it like 10 time along with having the docs at the side. And it all started making sense. This video of channels and channels docs together is ❤️

[@mugumyakevin8696]

I followed your advice man. Made it to the 7th time and got a read through those docs. Things become clearer with time.

[@cricketinpie4491]

Send me the whole code please.... GitHub profile link??

[@BenniK88]

Yeah tutorial speed is really fast. I also needed some docs aside

[@nirmalpandey600]

Kudos to your dedication brother.I learn a ample concept from you.Love You from Nepal!

[@mirrormirage0]

pure awesomeness..... The best explanation on django channels by far.

[@Irshu]

This is very cool. You made a step by step tutorial to go through the whole socket connection lifecycle. I'm working on a quotes app that streams realtime securities quotes, so i thought of exploring Django channels to make it happen. Your tutorial really get me going. Thanks a lot!

[@steelwolf180]

Awesome tutorial we're looking at this as well due to the need from our end to provide data to front end in Angular

[@CodingEntrepreneurs]

Thank you!

[@poormancodespmc4598]

Do you happen to find good documentation on how to make it works with angular? I don't try yet, but I am new to angular and don't find yet a good documentation for it.

[@cricketinpie4491]

Send me the whole code please....

[@mateusribeiro9384]

@@poormancodespmc4598 I tried with Vue and it's hell on earth to find good resources.

[@poormancodespmc4598]

@@mateusribeiro9384 I guess.

[@fadyghalayiny1920]

great course as usual can you please make a small video how to upgrade project from channels 2 to channels 3

[@medoabdin480]

you are really amazing bro. actually, you have a nice illustration to simplify the idea, thanks a lot

[@jurajnajiva]

If you are trying to put this into production by using uvicorn and are getting the following error "Django can only handle ASGI/HTTP connections, not websocket." its because you should call get_default_application() from the channels.routing instead of get_asgi_application() from the django core. (ps: You have to call django.setup() before)

[@arenmkhoyan]

Yes yes yes. Thank you bro please continue this tutorial☺👍

[@radosawskabania1529]

Saved me a lot of headaches, appreciate your effort cfe !

[@dalmasogembo7034]

This tutorial is amazing I have most of them in my downloads, almost becomeing a ninja in django through this channel

[@cricketinpie4491]

Send me the whole code please.... GitHub profile link??

[@boryskuczkowski]

on 24:34 after putting await self.send({ "type": "websocket.accept" }) saved and all but console log still gives me the same error...

[@saichavali8175]

have u fixed the error If yes please let me know as I am also facing same problem

[@jasonli7375]

same here, seems the original django code is not correct

[@carlose4616]

I know that is late, but also can be useful for someone else that error can be fixed if you add a slash to this line of code: var endpoint = wsStart + loc.host + loc.pathname + '/' that is how I fixed the "Error during WebSocket handshake: net::ERR_CONNECTION_RESET)" Btw all the code still working in the lastes versions of Django and Channels at least until today haha

[@rayemery788]

@@carlose4616 worked for me too

[@martincastellon5701]

@@carlose4616 I fucking thank you so much!!!!

[@FillerWorld]

This content is so dope, keep moving! Do not stop!

[@chaudharypraveen98]

Amazing sir.. Thanks for making such kind of videos. Your's videos are really helpful.

[@CodingEntrepreneurs]

Thank you

[@akashsahoo745]

justin you are a rockstar you made my life easy

[@vinayarora7334]

Wow you're awesome. You keep on learning and teaching cool things. Awesome.

[@johnrperry5897]

What lead you to the conclusion that you'd have to create the `chat_message` method? 1:00:14

[@cricketinpie4491]

Send me the whole code please.... GitHub profile link??

[@faizanfareed9076]

Best tutorial for beginner's

[@tonydias4290]

CONGRATULATIONS!! You rock. It would be perfect if you make a video with channels with DRF, redis and celery (as backend) and react.js as frontend. Like full application, profile and so on. :) THX!!!

[@CodingEntrepreneurs]

Thank you!! Channels replaces the need for celery (actually I’m pretty sure they don’t play well together at all). Love the suggestion. What type of app would you want to see?

[@tonydias4290]

CodingEntrepreneurs Nice! Good to know. Absolutely helpfull. Thx again

[@thefreakingmindistaken]

Can you build a Full Analytics Dashboard in Django using d3.js and realtime analytics.

[@johnrperry5897]

@@CodingEntrepreneurs if channels replaces celery, then that means that channels can run scheduled tasks?

[@Irshu]

wait, how do u replace Celery with Channels. We use celery to run cron jobs mainly.

[@mugumyakevin8696]

Fantasticcccc👌👌. This is so well articulated and clear. Respect to you and humbled for this content man.

[@AjaySharma-jv6qn]

really helpful, thanks for your work, Many likes from India :)

[@rasmuslinden3572]

This is by far one of the best tutorials i have ever watched, went straight and signed up. Thank you so much!

[@CodingEntrepreneurs]

Thank you!

[@lekanakanbi9346]

YESSSSSS i have been waiting for this a long time Thanks

[@CodingEntrepreneurs]

🙌

[@cricketinpie4491]

Send me the whole code please.... GitHub profile link??

[@vishnupriyasrivastava3988]

really a good video!!.Please make video on how to show messages with their usernames if more than two users are there in a chat room

[@vladbelozertsev4084]

Thank you for the video)) Can anybody help me? When i add send await self.send accept (24:21)and started server i have error:Error during WebSocket handshake: net::ERR_CONNECTION_RESET and in source - var socket = new WebSocket(endpoint) pointedly red

[@carlose4616]

I know that is late, but also can be useful for someone else that error can be fixed if you add a slash to this line of code: var endpoint = wsStart + loc.host + loc.pathname + '/' that is how I fixed the "Error during WebSocket handshake: net::ERR_CONNECTION_RESET)" Btw all the code still working in the lastes versions of Django and Channels at least until today haha

[@DanielRivera-vb8xh]

@@carlose4616 Thanks, that was the answer to my problem!

[@89elmonster]

I watched the entire video, it was great and my only concern was the lack of coverage of the models, that's all. Other than that this video was very informative!

[@ursolusproductions7188]

where do you include broadcast_msg_to_chat??????

[@andreisima1977]

:) This is what i need. A intro to Django Channels Just started to watch. And i think that combined with graphQL can be quite powerful. Read/Write Fragments on front-end cache to update the data state... i will try it in the near future. BTW update requirements.txt on git.

[@chance2480]

Looking swole brotha. Nice video thanks :)

[@rajkumargosavi2890]

Great video. Must needed django-channels tutorial

[@falakchhikara7230]

Sir can you explain why we are using chat_room = f"thread_{thread_obj.id}" ,, time - 56:40

[@falakchhikara7230]

@@furkankoksald4201 thanx But why we are using thread_ in starting

[@falakchhikara7230]

@@furkankoksald4201 why only thread_

[@dalmasogembo7034]

It is thread because that is what he chose it to be otherwise any chatroom name can work, you need to have specific names for each chatroom to send messages in the right way

[@falakchhikara7230]

@@dalmasogembo7034 ya chatroom name has to be unique and same for both users

[@adammaulana6116]

Hey mate, thanks for being kind :D

[@worthitjobsadmin9707]

Thanks a ton,Your work justifies your channel name

[@amruthap6334]

hello. i am facing so much trouble installing redis in my windows 10.. please elaborate what steps should i follow to install it through cmd.. please i have to complete this project by this month

[@amirmubarak8967]

great explanation on django channels. django + no-sql integration will be now on high demand. please make for it :)

[@kaiserkonok]

Thank you so much. It was awesome🔥🔥🔥

[@meeragangani7311]

Cannot import ASGI_APPLICATION module 'cfehome.routing' Can you please help me out!!!

[@larsyboy2222]

I might be a little too late with this response but could it be possible you didn't add the routing.py file in this exact folder? "./src/cfehome/" I am telling you this because I resolved the same error.

[@mufidrazmin8929]

Great video. Pleaseake an indepth video of django signals, celery, memcaching etc

[@AnnSmesh]

Thank's for this detailed tutorial :) it's very usefull and helped me to understand all)

[@ThePirateHistory]

Hello, thank you for the long-awaited lesson, I wanted to ask, I saw that you have projects in your projects, deplyoment, on digitalocean, apache was the server, why exactly? I for example through nginx, yes with the new version there there was a hemorrhoid, in a kind of caching of files, now caching is not established for the separate block, on type to store css, and so on, now it is installed in so to say in the parent block, that is stupid for all , as I did not try to expose only for the files, it does not work for them, I expose them to the parent block, caching works, but I found the solution to expose to the parent block as I said) but why apache?

[@CodingEntrepreneurs]

So you’re saying I should do a tutorial on deployment with Nginx? 👀

[@ThePirateHistory]

I would be glad), although you need to ask all x)

[@niranjanrao1592]

@@CodingEntrepreneurs Deployment tutorial through Daphne/ Nginx would be very useful. Particularly for PaaS (like GAE) because most new folks use that. Is it even possible to deploy through only Daphne without altering Nginx conf?

[@hameedyusuf6664]

@@CodingEntrepreneurs yea this would be nice

[@luskbo]

cannot unpack non-iterable NoneType object ./chat/views/py ::: Getting this error at 16:00. Any ideas? I login to admin first, but get error when going to /messages/user

[@abyk7990]

go to the other user created

[@olegnedbaylo5092]

src/chat/models.py line 18, the method get_or_new is expected return a tuple but in that line it returns only None.

[@mobileplay5487]

Yes maybe it should return (username, other_username) as tuple.

[@vitaly7491]

It's very important theme. Thank you.

[@kamruzzamantauhid7445]

Very helpful. Is there a tutorial for using WebRTC with Django? EDIT: Problem solved. I was able to use WebRTC with Django channels to build a video chat web application. This video was a lot of help.

[@exploringMyself998]

Bro does this video have previous part cause the Thread model part has already been built ??

[@kamruzzamantauhid7445]

@@exploringMyself998 I don't know about that, brother.

[@exploringMyself998]

@@kamruzzamantauhid7445 ok bro

[@swetlampa]

The information is extremely useful! Thank you very much!! Aaaand... I also really enjoyed the voice :)

[@justastudent4965]

my best Django Tutor

[@mzgz4216]

man that was owesome , many thanks to you

[@CodingEntrepreneurs]

You're welcome!

[@boiyedove]

Great Video Justin! Been with you since 2015 and it's been awesome as ever!. Keep up the awesome work! Quick question; how would you take this further to send notifications to said users about the availability of new messages?

[@JuckReis]

Great Tutorial. Thanks! How would it be for receive mobile connections (something like an REST Api), to create a chat on the Mobile Application ?

[@dalmasogembo7034]

You can try using ionic or react with the websockets in the frontend in JavaScript or typescript then do the normal URL routing in Django then match your frontend urls with the Django urls. Lack of stable internet slows me down from doing this

[@shahabmalekzade4794]

Hi, Thank you for your great tutorial, I have a question. I want to get some API data in the backend and send them to all of the web page visitors continuously. Say I want to show some stock market info to everyone visiting the web page. I know how to get the data from API, but I don't know how to send them to all every 5 second continuously without the frontend asking. how can I implement that efficiently? Thanks.

[@Michayeee]

Did I miss something? Where did you created this input in template? When did you create those models in models.py? I also check your github and it is not working like here on video. Am i miss something?

[@CodingEntrepreneurs]

I don’t remember exactly to be honest. If you pull from github be sure to install the versions from thete

[@bryanstrader1740]

I'm late to this party, but great video.

[@karanv293]

great content! thanks bro. is it possible for you to do a tutorial series on implementing DjangoRestFramework with Channels. that way we can implement chat, notifications in flutter. that would be a cool series and im pretty sure I haven't come across that on youtube.

[@mubashshiralibaig6104]

i have the same directory structure as this tutorial but "from chat.consumers import ChatConsumer" is prompted to be incorrect in my pycharm, what am i doing wrong??

[@Saradomin65]

Same here, have you solved it?

[@mubashshiralibaig6104]

@@Saradomin65 appearently pycharm has some path issues, when i opened the project on vscode, it started running.

[@ivanabregu1]

Thanks Justin for another amazing work!

[@jakhongiralikhanov8309]

@CodingEntrepreneurs How can I connect WebSocket with Django Project built-in Docker?

[@Alejandro-pf5dk]

Why does clicking "Submit" redirect me to "/messages" and not to "/messages/username" ?

[@jazzeverything121]

in urls.py insert "/" in the urls like this "re_path(r"^(?P[\w.@+-]+)/", ThreadView.as_view()) "

[@ahnabshahin]

My success url='. /' not working

[@helenren3194]

Class ChatMessage has no 'objects' member on 1:06:00

[@helenren3194]

there is no 'objects' field in the ChatMessage model from the code downloaded from GitHub

[@orkhanrustamli2039]

Hi. Thanks for amazin tutorial, really helped me understanding basics of Channels. The only thing stays confusing for me is Redis usage in Channels. What is its purpose? Just connecting several instances? But how it accomplishes it? There is no much information on documentation of Channels as well.

[@WernerRaath]

Maybe instead of using virtualenv etc, rather just use the python:3.6 Docker? Awesome bud btw. been using Django for years and decided to try out channels and this video made it super easy

[@leonardobarrios1509]

Could you help me with a question, to create a streaming that you would implement? socket or is there another opencv way. Thanks for sharing your knowledge.

[@georgikjoseph4287]

I got stuck, please guide me Exception inside application: ERR unknown command 'BZPOPMIN'

[@bernardoolisan1010]

did you fixed it?, I am having issues with that too

[@sabuta100]

Were you able to fix it? I'm running into the same problem. When I execute redis-server it displays bind: No such file or directory.

[@bernardoolisan1010]

@@sabuta100 I fix it, I was in windows, so I install the redis version of microsoft open tech, I search deep and I found that it was problem of the version, the latest version of redis that microsoft open tech gives you is redis 3, but the error says "BZPOPMIN" redis 3 does not support "BZPOPMIN" the only version of redis that supports BZPOPMIN is redis 5, to install redis 5 you need to install the ubuntu subsystem for windows, it has to be ubuntu 20, I follow this tutorial kzbin.info/www/bejne/rJuYk4GcfaiZmJY

[@narendrakushwaha5132]

just update your channels_redis then run it again

[@Tastybiscuit64]

You should sanitize the user input or someones gonna XSS that chat room. Nice video.

[@helloworld12354]

How about django and elasticsearch integration mate!

[@dominicmazzola3197]

Why not use haystack?

[@cricketinpie4491]

Send me the whole code please.... GitHub profile link??

[@taihatranduc8613]

thank you. thanking for making this video

[@martincastellon5701]

#When adding: await self.channel_layer.group_add( chat_room, self.channel_name ) #I get this error in the console: 019-03-08 18:49:46,469 - ERROR - server - Exception inside application: 'WebSocketProtocol' object has no attribute 'handshake_deferred'

[@Realzingx]

Great tutorial as always, how would you go about implementing a multi window chat system? facebook like.

[@meet_gondaliya]

Hey, very nice tutorial. I hhave a question. How to send data from the database to a certain page? I don't have an chat app, but more like a analytics dashboard.

[@Funnisrock]

I need a periodic refreshing of data in json format. I have used django rest framework. Can I integrate django channels in drf?

[@abuchiaroh119]

thank you for such a wonderful video but please my ws is not connecting it keep saying no route found... it disconnect during ws handshake please help

[@lamepic]

Great video. Will this work with drf? if not please make a tutorial on django channels and drf.

[@karan_rathore]

Please help! I understand that you store messages in the database on receive but how you are you retrieving messages from the database on reconnecting WebSocket and resending them.

[@jaysinghkushwaha4461]

please sir help me google colud problem this failed: Error during WebSocket handshake: Unexpected response code: 404

[@CodingEntrepreneurs]

404 is page not found

[@CodingEntrepreneurs]

Are you sure you have the correct routing?

[@jaysinghkushwaha4461]

@@CodingEntrepreneurs chatting is working locakky but when i moved to google cloud its not working. can you please suggest me how to proceed?

[@boiyedove]

Hello Justin. Please do you have any guide on how to deploy django channels on webfaction?

[@abhishekdubey31]

HI There, I want to understand that can we use rest api and webscokets together ? I have a use case where a no of rest api are already working using djangorestframwork and now i want to add websocket in the same project. Is it possible?

[@exploringMyself998]

Bro does this video have previous part cause the Thread model part has already been built ??

[@jaspervandijk27]

How would we go about and implement rate limiting?

[@shahabmalekzade4794]

You are my hero bro 🌹🌹🌹

[@saitaro]

Thanks mate, that was useful and interesting

[@lublorrylamysere5863]

Amazing, this helps me a lot with my project, Thank you so much. However, I see in your console 37:26 also in mine some weird logging occurs after 2 or 3 seconds. `WARNING - server - Application instance

[@subramanians7413]

Hi All, I don't see any setting of channel layer here, does the new channels library manage this under the hood? or the channel layer is optional? Can some one explain please

[@slash1108]

Hi, i'm working on a project with django and angular, I will implement a video chat and I'm wondering if django channels could work as the signaling server for the webrtc process.

[@kiranv6495]

Great Tutorial. Thank you so much :)

[@Felipedotcom]

Really nice tutorial!!. It covers a lot of stuff and the examples are great. I would have appreciated to get to know a little better how it works with the models, but anyway. I'm currently doing a django project using DRF and I just realised that if I want real time applications I would have to use something like django channels. The question is, should I rewrite all my code to send data through websockets?, or maybe just using the websocket to check if there are new items, send a response to the frontend like saying "Hey there are new items, fetch again using REST" would be a good approach? Thanks!

[@augustuscaeser8939]

how did you find that model. i cant find that model 30:17

[@boiyedove]

Also what's the difference between using ReconnectingWebsocket and webSocketBridge?

[@amruthap6334]

hello. i am facing so much trouble installing redis in my windows 10.. please elaborate what steps should i follow to install it through cmd.. please i have to complete this project by this month

[@dalmasogembo7034]

Installing redis on windows is big problem but you can quickly do it by installing Microsoft visual c++ build tools then download the redis itself then try installing separately without pip installing it again

[@dalmasogembo7034]

You can try adding it to your path variable in the environment variables

[@amruthap6334]

@@dalmasogembo7034 hey thank you so much for helping me out. yeah i got many errors like Eval command not found that not found. so i downloaded v5 of redis seperately and it worked. thank you so much for taking time and replying 🌺❤️☺️

[@dalmasogembo7034]

Welcome

[@laubernardini]

AWESOME! Great video, thanks!! Do you know if it is possible to get database updates to show it in realtime??

[@tamirtsogbayar3912]

I love this lesson so much

[@noraxu1439]

Great tutorial! Thank you!

[@giacattranquoc4761]

at 16:29 , I can't go into the adress web with url: 127.0.0.1:8000/messsages/admin with admin is my acc