GraphQL API with .NET 5 and Hot Chocolate

[@81NARY]

Tip: If you add a 00:00 time code in your description, then youtube will automatically add chapters to the video.

[@CodingAfterThirty]

Did not know this. Great tip.

[@hirisraharjo]

Just finished reading a book yesterday about creating REST API in .Net core, and now youtube algorithm bring me to the author himself. conclusion: this guy is a superb teacher!

[@robertmrobo8954]

What's the name of the book brother..?

[@karkli1874]

@@robertmrobo8954 It's linked in the description: The Complete ASP.NET Core 3 API Tutorial

[@OctarineFoundry]

A lot of tutorials on tech topics fly over the "obvious stuff". I really appreciate that you take the time to go into the details of each step but remain concise. Great video thanks.

[@andreistelian9058]

For someone who is doing this app in dotnet 7 and has errors after creating the PlatformType, you need to put the [Parent[ attribute in front of the GetCommands method from the Resolvers class. This is a breaking change in the framework of HotChocolate

[@MichaelPeto]

This has to be one of the best tutorials I have ever watched. Thanks for putting it together!

[@gajarubanjeyakumar7226]

i Agree!

[@arwahsapi]

Couldn't agree more

[@sarinasalim2494]

One of the best tutorials I’ve seen. Coming from zero knowledge of graphql I feel at least now I understand the concepts backed by hands on examples. Thank you. Count me in as a new subscriber.

[@vladislavshevtsov3567]

Yes, we count you.

[@markybolton]

I love his tutorial! His teaching mannerism is so assuring and easy to follow. Best instructor ever!

[@fieryscorpion]

For someone struggling with the voyager setup, this is how it worked for my version of 5.0.2: app.UseGraphQLVoyager(new VoyagerOptions() { GraphQLEndPoint = "/graphql", }, "/graphql-voyager");

[@Mattzard]

Thanks for this - the "Path" property also doesn't exist, it seems to be set as default to this: - localhost:5000/ui/voyager

[@henryuta]

THANKS! I burned an hour on this and could not move on.

[@naufilshaikh09]

Thanks

[@Brickscrap]

Thank you for this!

[@Merilix2]

I guess the now supposed way is: after endpoints.MapGraphQL(); insert endpoints.MapGraphQLVoyager("/graphql-voyager");

[@Mattzard]

I have just completed this video and can confirm this was such a great introduction to GraphQL, thank you so much! I agree with another commenter that another video on the advised or suggested ways to query this new API from a frontend perspective would be great too. Thanks again!

[@sharifabdullahrifatsoftwar9816]

The Most effective Tutorial I have ever seen on GraphQL. I was thinking of buying a tutorial in Udemy. Now I think I don't need it. Thanks a lot

[@oswaldumeh]

This is the best GraphQL tutorial yet I have watched online. Very detailed with well-explained concepts. Thanks for this awesome work!

[@AndresZumelzu]

Hi Les, thanks for this great course! I didn't finish it yet, I'm on my way :). I would like to mention one thing I found when running a profiler for sql server: when using ObjectTypes (for Platform and Commands) and doing the heavy lifting manually, there are three queries executed against the database (one per platform id). But if I use the default behavior, there is only one. I think that's worth noting. Thanks!!

[@michaelpalgon3459]

Outstanding tutorial. Love how you hand code everything instead of magically pasting in code.

[@code3658]

Nice tutorial. I learned a lot. Please create a video about authentication and authorization stuff with GraphQL.

[@namanvohra8262]

There is no doubt that this is the best tutorial out there. Thank you so much Les for also taking the time to explain the things clearly. You just gained a new subscriber.

[@cutthecode2784]

awesome !! OMG... I watched the whole 3:45 hours continuously without getting tired

[@geeksy2278]

Currently we are switching our tech stack and your videos are pure gold. Thank you very much

[@joaofranco6779]

Very easy to understand, great voice, great visuals and great pace! Overall, a very good tutorial that is easy to digest and very much worthwhile going through. I only had one slight issue when I couldn't get Voyager to work, other than that every part was flawlessly explained and shown!

[@toddnedd2138]

if you are using package GraphQL.Server.Ui.Voyager Version="5.0.1" or higher the following should help: using GraphQL.Server.Ui.Voyager; public void Configure(IApplicationBuilder app, IWebHostEnvironment env) { ... app.UseGraphQLVoyager(new VoyagerOptions(){ GraphQLEndPoint = "/graphql" }); } default voyager endpoint is "ui/voyager" cheers.

[@rafaelskiba3854]

@@toddnedd2138 This does not work for me. But this: app.UseGraphQLVoyager(new VoyagerOptions(), "/graphql-voyager"); You can also omit the path. Then the GraphQL Voyager is accessible via its default: /ui/voyager

[@fieryscorpion]

@@rafaelskiba3854 I was googling the hell out of it and still unable to figure it out. Thank you so so much!

[@ankurmittal9734]

Was missing you and your awesome way of teaching.. hope will get many more this year..

[@martinkhachatryan3394]

Believe it or not, Mr. Jackson, you built my career, thank you.

[@imankurgoel]

I have not seen such a detailed video on GraphQL. Trainer knowledge is very good.

[@dzsukov]

Amazing tutorial, thank you! What would be awesome is to include a section (or a separate video) on how to handle authorization in GraphQL (both "endpoint-wide" and also user by user/object by object). I know it's a whole different complex can of worms and lots of work, however that's the last piece of info for me to be able to "ditch" REST :) Any chance you would be up to something like that?

[@PlayRiteProductions]

Welcome back bro! Keep up the awesome content! You're a great teacher.

[@lambo1707]

dev from philippines, your content helps me a lot

[@trpeel27]

This was incredible. Thank you for such detail. This is the only example I've found that walked you through end-to-end. It was perfect!

[@OdieFighter]

i'm not a dotnet developer but i was thrown headfirst into it cause of work, ur videos on it and the way u explain things really helped me a ton! i just wanna say thanks for making them ~!

[@JarredJ]

Les, Thank you so much for your informative tutorials. I did the one on API and Microservices and now GraphQL API and they are so helpful. Your teaching style is great and I have learnt a lot from you.

[@deepakkumar-cl6hs]

This is Superb Tutorial, Well presented . Les hat off to your effort and passion in teaching every bit of details in such a structure and easy format. I loved this video and have become fan of your channel. Keep up the good work . Many thanks

[@tuberklz]

subscriptions blew my mind. and also i am very opt in to the idea of starting type-less. after agreeing on the basics with the business representatives, one can quickly provide added complexity. kudos man. thanks for all the effort you put on this.

[@captainmujheri]

oh man, You made creating API in .net core so easy by making this video

[@davewasthere]

These are such high quality videos, I love it!

[@ArtyomAvetisyan5]

Finally a guy who is happy with 2020!

[@darenbaker4569]

I love graphql but having done work with graphql.net hot chocolate is far better and I did a demo with a legacy app and got up and running in a day I love banana cake pop as the testing and info ui. Its definitely something I will be promoting. Thank you for your videos it helps so much

I just want to say: This is awesome!!!

[@dallasthornton2374]

This is quality work. It's sat in my list for the last year and I finally got around to watching it since I'm starting to mess around with GraphQL and it's still pretty helpful even though I'm not using Hot Chocolate

[@rabinbyanjankar1310]

This is really great presentation. Would be great if you could include the pagination support as well.

[@dyakobaram]

nice to see you come back :)

[@binarythistle]

Great to be back finally! (Taken a while...)

[@alikemalbilgili9185]

I am not tend to comment but this tutorial was Epic. There is no doubt !

[@АртёмАртём-ю4ы]

Thank you from Russia, with love

[@georgcordes5909]

Hi Les! Love your voice, your beart, the accent and the way you're teaching us all that interesting stuff! Keep up your good work! For me it is "learning with a smile" and makes it easier then elsewhere! Greetings from Hamburg to Melbourne!

[@orochinagi1111]

thanks Les!!!!!!!!!! im subbed to your Patreon now :) next stop: microservices course! keep em comin baby

[@snehgour9711]

Always enjoy your all tutorials !!!!!!😀

[@2005bgva]

Les it is fantastic to see you again on youtube.

[@martinnjoroge9789]

Thanks for the tutorial. Watched and implemented to the end. Everything worked fine. Thanks once again @Les Jackson

[@marcoalfaroazofeifa]

I believe I will become a fan of your presentations Les. Great work!

[@rc2893]

I was getting errors using the ResolveWith in the two Type classes, what fixed the issue was adding the [Parent] decorator to the first argument in the two Resolvers classes. public Platform GetPlatform([Parent] Command command, [ScopedService] AppDbContext context) and public IQueryable GetCommands([Parent] Platform platform, [ScopedService] AppDbContext context) Hope this helps anyone doing this currently. This is with HotChocolate version 12.0.1

[@mps4856]

Got the same, thanks !

[@ANTONZUBAREV]

and I

[@유광수-v1q]

I spent two days, and no result. But, THANK YOU ^^

[@sameergsr]

Thanks! you saved a lot of my efforts. I got stuck with these errors

[@ProgrAmadaMente]

Thank you so much!

[@RomanSuska]

Good timing, was just looking for some materials to learn graphql. I will definitely take your course. Good to see you again :)

[@eliassal1]

Great, wondeful, easy to absorb and understand topic. I love your method of training others. I think it would be great if you show at the end for 10 minutes how to call all those GraphQl services (Platform, Command) from a .Net client or an asp.net mvc web page, that would be great if you can add this part, well done and thanks for making this available for the community.

[@KittFanNr1]

Yes, that would be great. I was also thinking about the graphql response, its very dynamic - How would you deal with this in a .net application?

[@eliassal1]

@@KittFanNr1 I googled but was not able to figure it out for this code, they were all specific and not similar to what Les showed us, maybe he can help us with a 15 minutes video if he has some availability :-)

[@HaoNguyen-km9xj]

I think I need to learn more theory about database such as schema, projection,... after watch this video,... Know only SQL query language is not enough,... awesome video,... Thank you so much,...

[@Etheregod]

I love your tutorials. Thank you for sharing this quality videos for free here. Actually you are helping me a lot with my APIs and I am falling in love with the backend part of programming!

[@AmazingTechwithSuhas]

Thank you for such a superb starter video. Hot Chocolate seems promising

[@SajidAliSoftwareEngineer]

Amazing and detailed video, I learn first-time Graphql Thank you so much Les Jackson. ❤️

[@karinn7163]

Amazing tutorial, very clear, thank you

[@vamvdotnet]

In this video, I learned a lot from you, Les. Thank you very much!

[@vladyslav.papirnyi]

Good tutorial for GraphQL novices. Thank you

[@andrewobrian441]

What a mad lad! Thank you so much for these great videos, learning with you is so much easier 😊 👍👍

[@bijulal3906]

Hi Les, Nice presentation . Feels like a live session. Thank you.

[@HaoNguyen-km9xj]

Make more and more video about API and GraphQL please... It's very useful,... very useful....

[@wilfredoguardado2712]

Thanks for taking your time to make up learning in a easy way! Definitely I recommend this video!

[@zulhishamtan4308]

Thank you Les, this is awesome, your step by step tutorial is really precise as you type while you going along. I have learned a lot and I like GraphQL.

[@homeofcreation]

Excellent video had to google a breaking change in the HotChocolate 12 update in the Platform and CommandsTypes code, but this is a minor issue. I have implemented Dataloaders which I definitely recommend. Great Job! Thanks!!

[@systemerror1405]

If you are having trouble with resolvers not working, you must add [Parrent] atribute to the object you are passing into function.

[@panirajn]

Thanks a lot for the teaching in simplest way!

[@bhuvaneshnarayanasamy3153]

Fantastic production and awesome tutorial, I followed along and created the same, very much apricated for your efforts.

[@neilgilroy1629]

Thanks so much for this great video. Merry Christmas!

[@nestormatias217]

Thank you Les it was an awesome to start on GraphQL i learned a lot very greatfull with your videos they are large but they worth it

[@raghavbuz]

Very informative and good video. I have gone through it and now will be performing the practical. One request, please upload videos/tutorials at least on monthly basis. Your explanation is simple to follow and in-depth. I really like the way you explain each and every concept. 👌👌👍👍

[@orochinagi1111]

great song at the end too :) perfect sized course

[@naufilshaikh09]

Woaah, amazing video. learned lots of new things. Thanks Les.

[@raj8844]

Great to hear your voice 🙂🙂

[@binarythistle]

Thanks Rajesh - great to be back!

[@martinnjoroge9789]

Hi @@binarythistle. I noticed that GraphQL.Server.Ui.Voyager version 5.0.2 does not have option of new GraphQLVoyagerOptions() in the Configure method in Startup.cs. I had to use the version you;re using

[@ehl-12]

Just started your Udemy course. Love it!

[@tyn3561]

Great tutorial mate! I am going to buy your Webhooks tutorial. Thanks a lot!

[@vitaliik8315]

I used hot chocolate - it's awesome! Thanks for video!

[@arunnaveenkumar]

Thanks for Tutorial. Love way of your teaching 👍

[@ifanzalukhu97]

Thanks Les Jackson for awesome tutorial.

[@BalooCSGO69]

Im in the middle of the video atm and I just stopped to say you are fucking legend bro.

[@KhanhNguyen-pq6kn]

Many thanks for really helpful and detailed education content... took a lot from this tutorial and git repo

[@OctarineFoundry]

Just a quick FYI, I was tripped up a little by the section on ObjectTypes as the resolvers have changed a little going from v11 => v12. The fix was really simple and it was to add [Parent] to the first parameter on the resolver Get methods (GetCommands and GetPlatform).

[@temitayoadesugba2819]

Thank you, I was stuck for a while till I came across your comment

[@OctarineFoundry]

@@temitayoadesugba2819 you are welcome 🙂

[@andreaciolini8309]

Same issue same solution! Tnx!

[@kanangarayev6110]

Thanks bro!

[@laureangheorghiu7963]

Thanks for the solution, I had the same issue

This is a great one! Thanks, Les.

[@BrunSwick33]

Excellent course/video. It also came at a great time since we are looking to implement graph with our .net 5 APIs. We will be looking to combine rest and graph but this will help a ton.

[@jamiesimm2735]

Fantastic video as always Les

[@邹鹏诚]

very useful, thanks for this great course!

[@saikatray5792]

It is very hard to find tutorials that strikes the perfect balance between concepts and hands on and this tutorial does exactly that. Also i was determined to try out Postman throughout the session but seeing how Insomnia tool supports GraphQL, i do not see myself using postman for graphql executions. Thanks @LesJackson

[@dembasiby]

Waiting this evening to watch the video, but Les, thank you, and Keep up the good work.

[@argeelearner3978]

Great to see you back

[@andremens8420]

HI Les i've looked the video from start to finish and a few part again. I've one question wich is about the Resolvers around 2:50. If i implement the resolver patern then i see a EF call for every record. When i don't use the resolver the EF only needs one call for the complete result. Is there i do wrong or is this by design and what is the profit of the resolver patern.

[@raouf2me]

Offf, Finally a new video on my favorite channel👏🤩

[@OvRaf]

amazing tutorial! thanks a ton, Les!

[@programmingskills3404]

you teach very well man

[@peculiarpeculiar2504]

Intro always epic.

[@bencejuhasz2938]

Thank you very much Les for this awesome course!

[@lemurza5236]

Your content is the best. Thank you

[@facilitatecollaboration7829]

It was fantastic, really helpful!

[@NikosMiliotis]

Les, that was an amazing Course. Thanks you very much.

[@v0fbu1vm]

I really loved the content here. It was easy to understand and just straight forward. Could you please, go into how to secure a GraphQL Api. I have tried a lot of ways but just cannot get my head around it. Sincerely.

[@igorristic5446]

Great tutorial Les, very informative. My only recommendation is to include examples when polling for a single entity as there is a couple ways to handle that as I discovered.

[@IVerges]

Excellent video. Keep like this dude.

[@oleksiylevenets8161]

Awesome tutorial!!! Thank you very much!!!!

[@florinpilca936]

The resolver doesn't seem to be hit. At minute 2:48:20 at line 29 in class PlatformType, if you comment out the line everything works just the same. Am I missing something?

[@apkingboy]

Hey man on 3:06:00 I notice we still can access the licenseKey in order to query. In fact it is not available as property of the platfom object but it appears as a order