React Redux Toolkit Query Tutorial and RTK Query CRUD Example App

[@medi7573]

This video should be added to the docs, as an easy guide to get started with RTK Query, just amazing!

[@DaveGrayTeachesCode]

Thanks! 🙏💯 They actually did add my full course video that includes this video chapter. You can find it here: redux.js.org/tutorials/videos#redux-toolkit-complete-tutorial-with-dave-gray

[@viditgoel2909]

congratulations and thanks for bringing out this amazing content@@DaveGrayTeachesCode

[@saketparasher3762]

I asked for rtk query at beginning of redux toolkit series, and got it. Thanks Dave. ❤❤ Learn a lot from your react authentication and authorization series.

[@DaveGrayTeachesCode]

Glad I could help, Saket!

[@fancyAlex1993]

Tried learning rtk query on my own using the documentation, it was hell ! Thank you for simplifying it

[@DaveGrayTeachesCode]

Glad it helped! 💯

[@mohammadumar443]

@@DaveGrayTeachesCode how will we do conditional querying with some data or on button click ?

[@DaveGrayTeachesCode]

@@mohammadumar443 great question! RTK offers a "skip" parameter for this: redux-toolkit.js.org/rtk-query/usage/conditional-fetching

[@dustyhordofelbamana279]

Hello Dave, I would like to thank you for your multifaceted contribution in the life of several developers in the world and in particular mine. I am in full reconversion, and your videos are a breath of oxygen, so much it allows me to apprehend the thing differently. GOD Bless You, one of your admirers from France!

[@DaveGrayTeachesCode]

Thank you so much for the kind words, Dusty! 🙏💯

[@dustyhordofelbamana279]

@@DaveGrayTeachesCode 🙏 Dave!

[@Pareshbpatel]

An excellent introduction to RTK Query with a CRUD example. Thanks, Dave {2022-06-20}, {2023-02-27}, {2023-04-03}

[@DaveGrayTeachesCode]

You're welcome, Paresh! 💯

[@aarondiaz2506]

I'm not really experienced to talk but i have Associate Degree in web development. I have never worked as dev but i graduated when first version of AngularJs was being released and i learned to code with js, php, java, pyhton and SQL with Mysql. Now i'm back to coding for fun and i love how easy everything has become, well maybe not easy for a beginner because most difficult part are concepts but a lot of work has been simplified, rtk query is a perfect example, love it! Thanks great explanation.

[@DaveGrayTeachesCode]

Thank you!

[@randomvideos90-30]

Thank you very much. Your explanation makes me more understanding of the RTK query.

[@hamidturkistani734]

Thank you Dave, we need more people like you.

[@DaveGrayTeachesCode]

You're welcome!

[@samislam2746]

Wow, this explanation is literally the best in the universe 🤔 You deserve the GOLDEN BUZZ! 🎉

[@DaveGrayTeachesCode]

Thank you, Sam! 🙏

[@vincent3542]

hi Dave! I just want to say a big thank you for your efforts in creating a lot of tutorial playlists, especially React and Redux. The playlist on your channel is my main intake when learning new technology, because you really don't just present shallow content for tutorial size, but you dare to explore topics that are much more advanced. Even now I have got a job as a web frontend, your channel is still the first place I'm looking for 😉💌

[@DaveGrayTeachesCode]

I sincerely appreciate the kind words, and am glad I could help! 💯🚀

[@vincent3542]

@@DaveGrayTeachesCode ❤️❤️❤️

[@chanchaldutta7778]

Dave, thanks a lot for your brilliant tutorials. I learnt a lot from those. My humble request to you, is it possible to create react tutorials using typescripts as many organizations nowadays are moving to it?

[@DaveGrayTeachesCode]

Thank you, Chanchal! 🙏 I do plan to start a Typescript series this year.

[@moretimeproductions]

It's a great idea, but also it is a nice challenge to do these tutorials and add Typescript yourself, I learned a lot doing that, because I could use. what I already know and also had to do quiet a bit of research to find out about all the stuff I didn't know.

[@stevereid636]

@@moretimeproductions That's exactly what I've been doing 👍🏾

[@htmlfivedev]

This is the BEST tutorial on this topic in the whole youtube ... thanx very much dawwwgh!!

[@DaveGrayTeachesCode]

Thank you!

[@SimPwear84]

Great intro! Thank you so much for this lesson. You're such a gem providing useful and real world problems and solutions.

[@DaveGrayTeachesCode]

You're very welcome!

[@muhammadhaseebfarooqkhan9597]

Thank you Dave, You really elaborated every thing along side cases which help us to understand more clearly.

[@Mark-iv5dl]

thanks to you! learn it in 10 minutes haha skipping some parts but awesome

[@CryPoison]

Thank you very much. I was a bit scared at first but knowing context api and redux makes this one easier than ever.

[@DaveGrayTeachesCode]

You're welcome!

[@Kisovn]

Hi Dave, the app on my side works mostly fine, but the delete method is always returning “500 internal server error”. I have the same code and the post/patch methods work as intended. Thanks for your courses 😌

[@AbhishekMishra-h3e]

At 9:50 How can I feed multiple slices to AppProvider if my component relies on data from differnt sources

[@olenadiachenko8943]

Hi! I hate to comment, but not today. Information is very structured, clear, and helpful. Thanks a lot for your great work

[@DaveGrayTeachesCode]

Thank you! 💯

[@eleah2665]

Todo List! Never fails.

[@DaveGrayTeachesCode]

Classic CRUD 💯

[@danielrosenwald]

Dave, this is by far the best RTK Query tutorial I've watched. Very in-depth yet easy to understand. The application I'm building uses Redux for more than API calls - it also includes the state of some UI items, for example which "Todo" is currently selected for editing. How would you go about combining the RTK Queries with regular Redux state that does not depend on an API call?

[@DaveGrayTeachesCode]

Thanks Daniel! You can do both. Here is a tutorial where I use RTK Query for login authentication, but then I store the auth state in Redux: kzbin.info/www/bejne/Y3utd4Rvl9CImNE ...I also apply this strategy in my recent MERN Stack Project series. Just an example that you can apply to any state you want to store in Redux when you are using RTKQ.

[@danielrosenwald]

@@DaveGrayTeachesCode Thank you for the quick reply Dave! I'll check out those other videos.

[@omarkraidie]

I think your vscode theme has an outside effect on the quality of your videos :D It is just beautiful to look at!

[@DaveGrayTeachesCode]

Thank you, Omar! I'm using the Github theme. It has several dark mode options.

[@mounis]

Just what I was looking for, thanks a lot!

[@DaveGrayTeachesCode]

You're welcome! 💯

[@mariusngaboyamahina9190]

Thank you, @Dave Gray

[@DaveGrayTeachesCode]

You're welcome, Marius! 🙏💯

[@eslamelwakeil5922]

Thanks mr Dav for this amazing content❤️❤️

[@shineLouisShine]

What a neat introduction. Thank you!

[@brortiz]

Thank you Dave, it helped me a lot!

[@josesantillan732]

Marvelous! Thanks man. Keep it that way

[@DaveGrayTeachesCode]

You got it!

[@regilearn2138]

Really appreciate you Dave ❤

[@DaveGrayTeachesCode]

Thank you, Regi! 🙏🙏

[@emanuelmejia4525]

Your videos are gold, thanks so much!

[@DaveGrayTeachesCode]

Glad you like them! 💯

[@lacascadaobregon]

Amazing. Love the way you put this together. I've not had a piece of code make so much sense in quite some time. Thanks!

[@DaveGrayTeachesCode]

You're welcome!

[@jomaramomas7682]

Thank you again for an awesome video man! Keep it up!

[@DaveGrayTeachesCode]

You're welcome and will do! 🚀

[@nikolayshatalov5765]

amazing content! thank you, sir

[@artemiuszkuzniecow1283]

Thank you so much! Amazing lesson!

[@DaveGrayTeachesCode]

You're very welcome!

[@marziehmokhtari7141]

thanks for your great teaching💐

[@michaelscofield5343]

what is the difference if I use createSlice method and do all of in this vedio manualy like in the pervious vedios and if I use RTK Query?

[@noellel]

Would love to see transformErrorResponse incorporated and tested by forcing an error within the associated API.

[@DaveGrayTeachesCode]

Good idea! transformErrorResponse should work in much the same way as transformResponse - to try it out, possibly disconnect your wifi / web while running the app in dev mode. You should get a 408 request timeout or similar.

[@ogt1407gabriel]

Wow there so much you can do with redux and I thought i knew it all about redux and now i know that i dont.

[@DaveGrayTeachesCode]

Glad I could help!

[@boburmirzomuhibullaev3081]

love your tutorials! Could you make your videos with typescript, please? I think it will another level

[@DaveGrayTeachesCode]

I am building a TypeScript for beginners series right now. After it is complete, I will add some additional TS content.

[@neelnarwadkar5921]

Great content! How do i perform basic operations on fetched data that don't require an API such as increasing or decreasing quantity of a product in the cart, filter list by name.

[@thimiraakash9024]

Thank you very much this is a really good video❣ Would u please tell me that how or from where did u take that ===>tagTypes:['Todo']. I had the idea what was the purpose for using that but need to know that how did u decide that 'Todo' is the tag. Thank you Dave! Cheers..

[@mertdr]

Great tutorial Dave, quick and easy! I’m reading the documentation now and maybe I might find the answer but I’d like ask. Apparenty RTK query is caching the data by default. I’m not sure about the use cases of caching since the state must be changed after any action taken by visitor. I noticed that invalidateTags is an array and it might be possible to invalidate certain keys only and cache the rest, am I right?

[@DaveGrayTeachesCode]

You are right on! It works very well 💯

[@mindblown9365]

Excellent tutorial. Thanks alot.

[@DaveGrayTeachesCode]

You're welcome!

[@Clash-Roblox]

Thank you for your RTK query lesson but in my project, I have a lot endpoints and Slices to deal with. So in index.js file, how can I add others slices to api in ApiProvider?

[@iUniverse]

I am wondering why my sorting does not work, I also try different way but it still did not worked.

[@somnathdas8922]

Thanks for this tutorial.

[@moddaman90]

Nice tutorial! Helped a lot. One question regarding RTX: I see that both in your tutorial and documentation the flow goes like this: - Get All Elements - Update (mutate) one element, then invalidate get all elements - Get all elements Seems to be overfetching.Usually when I update one element I would just fetch that updated version and update only that element in the list. Is this not best practice? I can´t figure out how to just fetch the updated element and update that in the list. Do you know?

[@geomukkath5373]

Loved the tutorial. Just one question, why not use .reverse() method instead of .sort() ? That's far simpler. Let me know if there is a problem that I am not aware of.

[@leonidkonstantinovich3418]

Hi! Excellent tutorial, super informative and clear. Thank you very much. Could you say a few words about how to manipulate state using RTK Query? When using createAsyncThunk one sets up extrareducers where it is possible to change any state variable while handling api call "status" (pending, fullfilled, rejected). Should one create another slice for state management that will interact with the api slice? Or is it possible to incorporate the initial state in the api slice and change it based on data received from api?

[@DaveGrayTeachesCode]

Hi Leonid, and great question! I think what you are looking for is the transformResponse option in RTK Query. I'll be using it in the MERN Stack series I'm currently creating. redux-toolkit.js.org/rtk-query/usage/customizing-queries#customizing-query-responses-with-transformresponse

[@leonidkonstantinovich3418]

@@DaveGrayTeachesCode Thanks for answering! That's probably it, I'll give it a try

[@saketparasher3762]

Are you planning to update react auth series to use RTK Query insted of axios. Would love to work on conversion as I have implement user auth including retry and auto access token fetch in rtk query.

[@DaveGrayTeachesCode]

This is a good idea for a future video! 🙏🚀

[@georgy2763]

Hi Dave, thanks a lot for your amazing videos. I am curios what do you think about the typescript and if you going to cover it with React/Redux later? In my current junior internship position, it is required to know it, and it seems that many companies want you to know it these days (at least in Russia)

[@DaveGrayTeachesCode]

I'm planning on covering it soon because I agree that many now want their devs to know it. I don't think it is essential as JS and React work without it, but it is currently in demand.

[@anonymousmangalorean]

Hey Dave . I would like to see a redux toolkit/ RTK query + firebase authentiction flow video. Please try to make this video.

[@DaveGrayTeachesCode]

Firebase would make an interesting addition! Thank you for the request! 💯

[@theshortclipper]

Thanks - can you please create video how to use customize basequery

[@DaveGrayTeachesCode]

You're welcome, Coach! I do customize a baseQuery in my Redux Auth tutorial: kzbin.info/www/bejne/Y3utd4Rvl9CImNE ...And I will be doing much the same in the MERN Stack Project series I just started. Also, if you haven't seen the docs on this part, they are helpful, too: redux-toolkit.js.org/rtk-query/usage/customizing-queries#customizing-queries-with-basequery

[@benarbiamohamedtaher546]

Thanks a lot Dave

[@DaveGrayTeachesCode]

You're welcome!

[@sagarramaswamy8368]

Thanks a lot for the tutorial

[@DaveGrayTeachesCode]

You're welcome!

[@louisohaegbu4223]

TodoList.js:15 Uncaught TypeError: (0 , _api_apiSlice__WEBPACK_IMPORTED_MODULE_2__.useGetTodosQuery) is not a function. i am having these error

[@srinivasnahak3473]

Thank you so much for explaining everything so clearly! :) One suggestion: Even if you've to make an even simpler app you can, please write and don't copy and paste the code. Because it can get confusing for some viewers. Again, that's just a suggestion.

[@codernerd7076]

I love this video it's one of the more clear explanation I saw on this topic, however keep with one big question. How do I use this with redux toolkit normal reducers, can I call the api slide from the reducer slides, what about using it to save one user login status? This seems to handle server state level data while redux handling client side data?

[@DaveGrayTeachesCode]

Good questions - and most of that is coming in the next one where I integrate RTK Query with the blog project and normalized state from the previous tutorials. You are correct that this interacts with the server data but it does keep a cache which is used until invalidated - then auto-refetch occurs.

[@codernerd7076]

@@DaveGrayTeachesCode awesome can't wait for the videos but take all the time you need

[@devuser-pn5mj]

why its not used as middleware

[@headlikeahole6548]

Good video, thanks.

[@waltergermanes4528]

Is it good practice to wrap index using apiprovider?

[@davithchhung7577]

great video Dave! But I am a bit lost again :3 Can you explain when to use createAsyncThunk and when to RTK query? What are actually the differents? Thx

[@DaveGrayTeachesCode]

Hi Davith - they are both options, and you can use either one. It is good to know both as you might work on a codebase that uses either. I prefer RTK Query when creating new projects now.

[@davithchhung7577]

@@DaveGrayTeachesCode thx you for the answer :)

[@calebbush7559]

Thanks a lot! Question, suppose you have several APIs to perform CRUD operations, how are you going to structure the files?

[@DaveGrayTeachesCode]

That's definitely more complicated. A good discussion of that with answers from one of the primary RTKQ maintainers here on Stackoverflow: stackoverflow.com/questions/69971375/how-to-use-two-api-reducer-with-rtk-query-in-configuration-store

[@abduqahhornorimmatov5089]

thanks

[@rajatpratapsingh3123]

npx json-server --watch data/db.json --port 3500

[@DaveGrayTeachesCode]

You could even shorten that to: npx json-server -w data/db.json -p 3500

[@anupkubade6449]

Thank you for the tutorial Dave. Can you please guide me how can I implement Infinite scroll using RTK Query? I have a table, when I scroll to bottom, I need to fetch and append next batch of records till I fetch all the records.

[@DaveGrayTeachesCode]

You're welcome, Anup! In this tutorial (example #1), I show how to create an infinite scroll in React: kzbin.info/www/bejne/gIjPgJZ6qtiSqNU ...it is not specifically for RTK Query but the concept is the same. You will also see example #2 uses React Query. I could make a video on this for RTK specifically in the future.

[@hatembenechikh7035]

a side question , what is the theme that you are using in vscode it look great :D

[@DaveGrayTeachesCode]

My theme choices: kzbin.infodp4u1NNFhtE

[@aileenchan3741]

Dave, I like the VS Code plugin or extension that is highlighting vertically from open line to the end line (at 17:01 minutes). Do you remember the name by any chance? 😎

[@akechi5638]

Can we make a button for deleting all todos? I tried but couldn't figure it out.

[@DaveGrayTeachesCode]

On the frontend, you would need to issue a request for each id. It would be more efficient to have a specific endpoint in your REST API code for the backend that handled deleting all.

[@shehwarahmad2131]

wow! thanks

[@DaveGrayTeachesCode]

You're welcome!

[@emmanuelakogwu7761]

Awesome tutorial.....thank you But I'd like to ask, can one use rtkquery and reactquery for data fetching in React native too?

[@DaveGrayTeachesCode]

You're welcome! I have not, but it seems others have: bionicjulia.com/blog/implementing-rtk-query-in-react-native-app

[@fooked1]

So is redux useful anymore? Seems RTK query is all you need. What am I missing?

[@DaveGrayTeachesCode]

You can use them together when you need both a local global state AND timely data from an API layer. For example, you might store your user auth data in local state after login and still need the API layer to request and update records.

[@komilolimov2257]

Thats was awesome

[@dvd34]

Thank you Dave ! At 10:14 , what extension are you using to automatically spread the returned object from useGetTodosQuery ?

[@DaveGrayTeachesCode]

I think at 10:14 you are referring to "destructuring" the object from useGetTodosQuery. There is no extension for that. I just quickly pasted it into the code - while saying I was pasting it - but you just need to type that out.

[@amin001001]

Hi Dave! Very cool content. Thanks. I had a question. I'm trying to call the API in a component, and read the value in another component (using lazy queries), however it never shows the result where I want to read it. I've checked and the value is written to the store, and is actually readable using useSelector with some hacky tricks. Do you know how can I possibly read the value in the destination component? Thank you!

[@DaveGrayTeachesCode]

With RTK Query, you want to use the same useQuery hook you used in the parent component - but use selectFromResult to get the data that was already requested. You can see an example of this here: github.com/gitdagray/react_redux_toolkit/blob/main/08_lesson/src/features/posts/SinglePostPage.js ..I had already used the useGetPostsQuery hook in the PostsList and did not want to create another request just to view one of the posts. Link to the parent component code here: github.com/gitdagray/react_redux_toolkit/blob/main/08_lesson/src/features/posts/PostsList.js

[@russobradock]

Tks sir :)

[@DaveGrayTeachesCode]

You're welcome!

[@jiweihe3413]

Thanks for the great tutorial! RTK query seems very useful. 19:30 tagTypes for cache. I am not familiar with cache. Where is cached data stored? Is it something like local storage?

[@DaveGrayTeachesCode]

"A key feature of RTK Query is its management of cached data. When data is fetched from the server, RTK Query will store the data in the Redux store as a 'cache'." - Reference: redux-toolkit.js.org/rtk-query/usage/cache-behavior#default-cache-behavior

[@jiweihe3413]

@@DaveGrayTeachesCode thank you! this is very helpful. It seems if we close the page that calls the useQuery hook or after the default 60s, the data in the cache will be gone. It is quite different from local storage.

[@malinovayagalya4635]

Hello guys! I have a problem with error: Property 'data' does not exist on type 'FetchBaseQueryError | SerializedError'. Property 'data' does not exist on type 'SerializedError'. When i writing error.data.error. How to fix this? Help me please :(

[@DaveGrayTeachesCode]

You can download my source code from the description - look for lesson 6 when at the Github repository - and then compare your code to mine for differences.

[@malinovayagalya4635]

@@DaveGrayTeachesCode Thank you very much!

[@ABUTAHER-wg7gz]

Hello if i want to use authorization headers for RTK Query, can i use direct argument? or have to store on redux store?

[@digitalpartner7598]

hello dave i hope you're doing ok , i'll never thank you enough for what you're doing , i have a question though, it's about the primary ids of the data entries should we hide them or hash them especially when we're using them along with the HTML or there will be no vulnerabilities issues if we let them as they are i mean the real values stocked in the database , any advice will be appreciated. thanks

[@DaveGrayTeachesCode]

I don't see an issue with using the ids. If you are concerned with security, that will not help much for gaining unauthorized access.

[@digitalpartner7598]

@@DaveGrayTeachesCode thank you sir, I have always have been concerned about users manipulating other users data, this is why I try to hide users ids and assure that the user can only manipulate the data that belongs to him so I stock the connected user Id in the token

[@hosamgnaba3205]

nice one

[@DaveGrayTeachesCode]

Thanks!

[@samiullahsheikh5015]

The mutation hooks doesn't provide loading, isError properties. So, in context of above point. I want to show loading button when saving a todo and clear the loading sate of the button only when the post request is successful (i.e a todo is created or deleted successfully) How it would be possible?

[@DaveGrayTeachesCode]

If you move on to the next tutorial in this series (just released it), you will see something like this: const [updatePost, { isLoading }] = useUpdatePostMutation()

[@smart.coderz]

how to you paste the codes without writing them ? :D

[@DaveGrayTeachesCode]

You need to write them. As this is an advanced tutorial, many don't want to wait to see my type everything like I do in more beginner tutorials.

[@johnddonnet5151]

Can you make same tutorial with e-com related CRUD stuff, login, cart, user profile option, etc. with TS, because the TODO list is not very useful for real projects and without TS is kinda meh for job use.

[@DaveGrayTeachesCode]

This tutorial series moves on to another video with RTK Query that is more complex (kzbin.info/www/bejne/b4GVeoiuZpiAkKs). I will eventually do something with TS, but first, I want to launch a TS series this year with foundational concepts to refer viewers back to.

[@johnddonnet5151]

@@DaveGrayTeachesCode Thanks! Great content, very easy to understand explanations. Do you do coaching/code reviews?

[@thomassleeman9780]

Hi Dave, thanks for the video. I understand everything you have covered but what about if you want to set up a mutation in apiSlice with data that is a manipulated version of what was fetched from a query? I tried pulling an object array into a component using a RTKQ query hook but when I duplicated the array and tried to make changes to it inside the component I got an error saying that the object elements are read-only.

[@DaveGrayTeachesCode]

I think you are looking for something like transformResponse: redux-toolkit.js.org/rtk-query/usage/customizing-queries#customizing-query-responses-with-transformresponse

[@thomassleeman9780]

@@DaveGrayTeachesCode thanks, I’ll give that a go.

[@okonkwo.ify18]

How do you know if addTodo, updateTodo and deleteTodo action fails and how do you handle the failures like you did using axios?

[@DaveGrayTeachesCode]

Look at the TodoList.js file. Notice the hook RTK Query generates, useGetTodosQuery, provides several state values including isError and error. This is handled all within RTK Query. Our components should conditionally respond to the loading, success and error states.

[@okonkwo.ify18]

@@DaveGrayTeachesCode okay. IsError and IsLoading from the query can be used to handle the mutations too?

[@DaveGrayTeachesCode]

@@okonkwo.ify18 yes, here is a good doc reference for that: redux-toolkit.js.org/rtk-query/usage/mutations#frequently-used-mutation-hook-return-values

[@okonkwo.ify18]

@@DaveGrayTeachesCode okay thanks , u are the best .

[@Adam-tz6gk]

Hey great guide, super helpful and to the point. Quick question: When would you use a Redux Thunk Middleware and when would you use an RTK API slice with createQueryApi?

[@DaveGrayTeachesCode]

While both are possible, I find myself using RTK Query all the time now.

[@Adam-tz6gk]

@@DaveGrayTeachesCode Thanks for the reply!

[@risechess7114]

hello dave or guyz anyone can help 16:06 dave added a new todo but he didnot add an id "like using nanoId" why he left this new todo without and id, and i didnot get whats the difference between userId and id, i guess userId shows specific todo for same person i guess. but why he didnot add an id for the new todo plz help

[@Kisovn]

you can’t sort the posts with nanoid’s ids, but adding a date property to each todo would suffice as another way

[@jritzeku]

Would it be acceptable to use Redux with React query instead of Rtk Query? It seem like they both serve same/similar purpose. Im currently watching your React Query tutorial so was hoping to implement that in my project that uses redux toolkit.

[@DaveGrayTeachesCode]

It would be a strange combination. I'm not saying it isn't possible, but React Query will cache data for you also. If you need separate global state, React's context API might be enough.

[@jritzeku]

@@DaveGrayTeachesCode That makes sense! I had used redux over contextAPI primarily due to performance benefits but now with React query it def changes things. I think I'll stick with useEffect and redux for now since there is lot of codebase with it. Thanks.

[@trentcox9239]

gday mate, fantastic content. quick question that im driving myself insane over here trying to figure out. With the way rtk query is implemented when it comes to building api's, the only response validation (if you can call it that) that can be done is via typescript to infer the type of the response. thats great in a development environment, but correct me if im wrong, but id rather assume any and all third party responses are unknown until i pass the response through something like zod to validate/parse the response before passing it on to my application, thus making invalid states unrepresentable, and my application predictable. so far i cannot for the life of me figure out how to parse the response of an individual query and return either an error or data state. the only solution is to create your own base query for each endpoint, which in my opinion, negates the whole createApi thing in the first place, plus the validation should be at the resource level and not the base query level. my two cents. I feel like they've shipped a car with a great engine, but forgot to install the suspension with this one....if theres a way to validate a response and return the response or an error object for a slice or the application to pick up in its 'validated' form, im seriously all ears. Cheers mate.

[@DaveGrayTeachesCode]

I'd think you could use the transformResponse method to do some custom validation: redux-toolkit.js.org/rtk-query/usage/customizing-queries#examples---transformresponse and redux-toolkit.js.org/rtk-query/usage/customizing-queries#customizing-query-responses-with-transformresponse

[@trentcox9239]

@@DaveGrayTeachesCode cheers for the reply mate. intuitively that felt like the appropriate place for it, however any validation at this level that you would like to resolve to an error response wont happen because regardless of the result of the validation, it will be attached to the {data: ....} property that goes on to the application instead of the {error:...} object which is a real shame...because I use a typescript functional programming library (fp-ts), i could have my final data type as an Either but that then forces error checks in two separate areas (the error object itself and the possibility of a validation error against the data object) at the application level

[@DaveGrayTeachesCode]

I understand you are transforming the data, but have you tried throwing a custom error at that point in a try / catch? I do that inside of an onQueryStarted portion of an api slice and it works for me. At that point, you should have an error object that you can manipulate including the response status.

[@trentcox9239]

@@DaveGrayTeachesCode if that works im going to prescribe myself a few well placed uppercuts haha hopefully this is a case of missing the proverbial elephant in the room, cheers again for the reply mate!

[@alirezahekmati7632]

🚀

[@anazbinnoushad8047]

Is RTK Query is possible to use in nextjs

[@DaveGrayTeachesCode]

Yes, some devs are using that combination.

[@anazbinnoushad8047]

@@DaveGrayTeachesCode I was unable do that , because of getstaticprops doesn't support hooks inside it , can you suggest me a solution

[@DaveGrayTeachesCode]

I Googled next.js rtk query and found some good examples and videos. Look at this example code sandbox: codesandbox.io/s/github/JNaftali/rtk-query-nextjs-example/tree/main/?file=/src/services/pokemon.js

[@abba3261]

react query ?

[@DaveGrayTeachesCode]

Yes, I plan to cover it in the future 🚀

[@osasferguson]

Hi Dave, is there a way to trigger the default GET request by the click of a button? Does the "useGetTodosQuery" also provide a getToDos function that can be used to make a GET request on the click of a button just like the other mutation method hooks do?

[@DaveGrayTeachesCode]

Yes, look into refetch: redux-toolkit.js.org/rtk-query/usage/cache-behavior#re-fetching-on-demand-with-refetchinitiate

[@osasferguson]

@@DaveGrayTeachesCode thanks, just looked it up now

[@tonyvito5062]

Man we are tired of those todo apps could you please do something else interesting.Thanks for the content tho

[@DaveGrayTeachesCode]

Todo list is classic CRUD operations but no matter the data, every program will create, read, update and delete. Users, recipes, blog posts, take your pick.

[@tonyvito5062]

My point is that it's not a real scenario of using RTK Query

[@DaveGrayTeachesCode]

@@tonyvito5062 I get wanting a different app topic. My point is if you look beyond the topic of the app, you are learning real skills for any app you create/ work on. CRUD operations apply to all.

[@tonyvito5062]

@@DaveGrayTeachesCode I appreciate your tutorials anyway thanks for the replies

[@prince5922]

Hello Dave, at around 5:12 you mention we need to create an api directory inside the features directory and to name it 'api', and if we were to name it something else, we would have to specify that for rtk query. I don't really understand this part, do we 'have' to create a directory named api or it can be anything we want? If not, then where would we specifiy it? Looking forward to your response.

[@DaveGrayTeachesCode]

There are no rules that you must follow. For organization, that is what I recommend. You are extending the overall apiSlice and splitting it into the feature directories.

[@CoderDmitri]

if you are getting an ERROR - App.js:8 Uncaught TypeError: (0 , _redux_api_apiSlice__WEBPACK_IMPORTED_MODULE_2__.useGetAll) is not a function REDUX api .... YOU MUST call the hook with USE at the front and QUERY at the end, otherwise it will NOT work... so name MUST BE: useAnyNameQuery = works; anyNameQuery = fails; useAnyName = fails;

[@kunr4104]

This does the trick!

[@CKNMEDIA]

What if we are using GraphQL Api

Best explanation of RTKQ I have ever seen

[@sappy12dream29]

Here because HOD sir wants more features in my final semester project.. It's getting hard to come up with any suitable niche to justify my efforts

[@DaveGrayTeachesCode]

HOD = Head of Department? I'm not sure what class you are taking or what the project requirements are, but RTK Query is a nice addition for many projects. 🚀