rtk-query | Data fetching and caching addon for Redux Toolkit | State Container library
kandi X-RAY | rtk-query Summary
kandi X-RAY | rtk-query Summary
RTK Query is an advanced data fetching and caching tool, designed to simplify common cases for loading data in a web application. It is built on top of Redux Toolkit and uses Redux internally for its architecture.
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rtk-query Examples and Code Snippets
Community Discussions
Trending Discussions on rtk-query
QUESTION
With RTK Query, the response of an endpoint can be transformed with transformResponse
like so:
ANSWER
Answered 2022-Mar-20 at 14:07I believe that the best place to define such a global transformation is in custom baseQuery
:
QUESTION
Could not find any info on this that explains why its not generating and how to force it to re-generate these hooks.
First I thought I had to run the app to get it to work so did yarn start
.
I ended up manually adding them at the bottom export where it should auto-generate according to the documentation. I following this comment here.
...Hooks are automatically generated based on the name of the endpoint in the service definition. An endpoint field with getPost: builder.query() will generate a hook named useGetPostQuery.
ANSWER
Answered 2021-Oct-09 at 07:40You misread that.
It is automatically generating the hook pokemonApi.useGetPokemonByNameQuery
. You define an endpoint and then that property exists on pokemonApi
. That's all.
You will have to export that by hand - there is no magic in place to change your files.
QUESTION
All the endpoints of the API I'm working on, require the same set of query parameters. The user must select these parameters before making requests to endpoints.
Examples of endpoints
...ANSWER
Answered 2022-Mar-15 at 15:32You were already on the right page in the docs. The trick is to not write a completely new baseQuery, but to wrap a custom baseQuery "around" the existing implementation. This examples shows how to do that to get a dynamic baseUrl, which should be very close to what you want to do here.
QUESTION
I'm already using RTK Query with different endpoints that return JSON which are working as expected. But there is one endpoint that returns XML. I can see in the network tab that HTTP response is correct but RTK Query's auto generated hook returns data
as undefined
.
Here's is my query definition:
...ANSWER
Answered 2022-Mar-15 at 15:35Your data
is undefined
, because your query goes into an error state - by default, everything will be parsed as json. You can provide a custom parsing function using the responseHandler
functionality of fetchaseQuery
though.
QUESTION
Hello all and thanks in advance.
Just to begin with, I am aware that weather data is not a suitable use case for RTK Query as it is always changing, I am using RTK Query in this case just for practicing purposes.
I want to refetch weather data upon a button click but the component is not being updated, however I can see that the requestId
is indeed changing when clicking the refresh button and that data is being retrieved, by checking the console.
I am doing the refetch as in the example that can be found in the official docs:
I am also wondering if it would be more suitable to use useLazyQuery and its trigger
function instead...
https://redux-toolkit.js.org/rtk-query/api/created-api/hooks#uselazyquery
...but if so, what should I take into account in order to decide if I use useQuery or useLazyQuery?
...ANSWER
Answered 2022-Mar-15 at 11:20I'm not allowed to leave a comment yet, so I'll try to answer you question regarding useLazyQuery
vs useQuery
here:
useQuery
- got triggered on render. Retriggered on params change. Returns data from cache if the cache has some valid data. refetch
allows to ignore cache, and forces to make a real API call. refetch
has no query params, so you'll need to pass them to initial hook call.
useLazyQuery
- got triggered firstly on trigger
call, expecting the query params to be passed to trigger
, and by default will do a real API call. To get the cached data first (if exists) - you'll need to pass the preferCacheValue
param to the trigger
function as the second param.
So the "rule of thumb" will be to use
useQuery
by default to fetch data on the component mount, use refetch
when you want to make a real API call ignoring the cache.
useLazyQuery
- for cases like yours, when you want to make a call only later (ignoring the render stage) calling the "trigger" on some event (like a button click), and remember about the preferCacheValue
option for a case when you have a chance to have the response already cached - this will allow making response feels instantaneous.
In our case - useLazyQuery
is MUCH relevant, due to you can avoid all that setCurrentPosition
=> dispatch
=> useSelector
stuff, and pull all that logic just in click handler, where you'll be able to fetch Geolocation.getCurrentPosition()
and pass coordinates to trigger
function, that where relevant to the click time, not to the time when the component was rendered.
QUESTION
I have three API definitions in my current scenario.
- Groups
- Group Members
- Group Invitations
These routes relate to each other, in that accepting a group invitation will invalidate the list of groups a user has. As a result, I have defined them under the same API as they need to invalidate shared tags.
However, this results in quite a bloated file, as each of those definitions have their own endpoints associated with them. Reading the documentation for Code Splitting with RTK Query suggests using injectEndpoints. This looks like it will suit my purposes, but I've the documentation has no examples that I can find of how it should be implemented with multiple 'sub' endpoints.
I have a couple questions;
- If I was to utilize injectEndpoints to extend the Groups API with GroupInvitations & GroupMembers seperately, which API should be included in the call to configureScore?
- Is there a way to inject both endpoints into Groups at once, resulting in a single combinedApi?
ANSWER
Answered 2022-Mar-14 at 11:31You always only configure your one
emptyApi
in your store setup. All the other "apis" you get by callinginjectEndpoints
are just a reference to that same api - but with additional types for autocomplete.Sure, just add multiple endpoints to the
endpoints
value of theinjectEndpoints
call.
QUESTION
Following is my implementation of the useLazyQuery hook:
...ANSWER
Answered 2022-Mar-14 at 00:21Actually, it is exactly the same as the common useQuery
's interface.
Only one thing worries - seems like you are reading unexisting loading
filed, which expected to be isLoading
. Besides that, it's straightforward:
QUESTION
I'm creating an mobile App with react native typescript
and expo
with help of rtk-query
. I'm trying to get partial data from API https://pokeapi.co/api/v2/pokemon/snorlax/
.
For example from API I'm only trying to get name or something else whatever but some partial data.
usersApi.tsx
ANSWER
Answered 2022-Mar-11 at 14:15You are probably accessing data properties without checking if data is fetched yet.
QUESTION
I'm using a very basic RTK Query hook to get some user data from an API. How can I access the data saved in my store inside of my components? I'm not able to get the data from the store generated in a specific matter by RTK Query.
I have a simple Post API and I called the getPosts hook. In Redux devtools I can see the data from the RTK query hook in my store:
Post API
...ANSWER
Answered 2022-Mar-07 at 18:10The easiest way is to just call the getPosts
hook in every component that needs the data.
It will use the data from the cache and not make an extra request - but if you later mount that component without a parent component, or in another context where the data was not present yet, it will make the request.
So you are guaranteed to always have the data at hand that way.
QUESTION
How to infer the type of the data coming from the query so that, I can have autocompletion in VS Code when populating my UI? I have been having a look at the content in the official docs but I was not able to understand how to do it,
https://redux-toolkit.js.org/rtk-query/api/fetchBaseQuery
Code below:
...ANSWER
Answered 2022-Mar-06 at 05:02You can define the type for the query result manually like this:
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