Jan 26, 2020 · We use graphql-code-generator to generate the introspection file for us. Go to your back-end code, or wherever your graphql.gql file lies, and do: Install GraphQL Code Generator: yarn add graphql yarn add -D @graphql-codegen/cli. Run the initialization wizard: yarn graphql-codegen init. I set up my own project and was experiencing the same issue when using useQuery. UPDATE: After adding an item, useQuery seems to work fine. Intended outcome: value of loading changes to false when data is available. Actual outcome: value of loading never updates to false. Version The useQuery hook returns an object with three useful properties that we use in our app: indicates whether the query has completed and results have been returned. is an object that contains any errors that the operation has thrown. contains the results of the query after it has completed. Apollo Link is a library that helps you customize Apollo Client's network communication. You can use it to define a link chain that modifies your operations and routes them to the appropriate destination. To execute subscriptions over WebSocket, you can add a GraphQLWsLink to your link chain. This link requires the graphql-ws library. Optional for the useQuery hook, because the query can be provided as the first parameter to the hook. Required for the Query component. variables { [key: string]: any } An object containing all of the GraphQL variable s your query requires to execute. Each key in the object corresponds to a variable name, and that key's value corresponds to the ... Jul 10, 2019 · This gives you the power to call the query however you want, whether it's in response to state/prop changes (i.e. with useEffect) or event handlers like button clicks. In English, it's like, "Hey React, this is how I want to query for the data". You can use fetchMore () returned from useQuery, which is primarily meant for pagination. const ... Feb 13, 2021 · 1 Answer. You don’t need an extra way to distribute your data, like react context. Just call useQuery with the same key wherever you need to, and react query will do the rest. It is best to abstract that away in a custom hook. refetch should only be used if you want to refetch with the exact same parameters. Apr 13, 2020 · Option 1: Update the GraphQL server to adhere to frontend needs. Once you realize that a screen needs to run multiple queries, ideally you can update your server to satisfy the needs of that particular screen. From the frontend’s point of view, a single query like this would be ideal: Mar 19, 2023 · this works, because you can't expect await refetch() to change the data variable in the closure (the result from useQuery). So you have to use the result returned from refetch(). If you only need the query to eventually call refetch, I would use queryClient.fetchQuery instead. – Nov 28, 2022 · 1 It because: setParticipant change state asynchronously, useEffect invokes after render actually happend so even if data.participant is not empty, participant is, until next render phase You could change to this: const ProfilePage = ( { id }) => { //... if (loading || !participant) { return <div>Loading</div>; } //... } Share Jul 10, 2019 · This gives you the power to call the query however you want, whether it's in response to state/prop changes (i.e. with useEffect) or event handlers like button clicks. In English, it's like, "Hey React, this is how I want to query for the data". You can use fetchMore () returned from useQuery, which is primarily meant for pagination. const ... Nov 14, 2020 · This can be achived using useEffect ( () => {// send the request}, [criteria]) Because, useEffect ensures that the request will send to server only if the setCriteria is finished. But, I am using react-query library. so that, it is not allowed to use useQuery inside useEffect. As A result, the request is send to server before it the setState is ... Apollo Client allows you to make local modifications to your GraphQL data by updating the cache, but sometimes it's more straightforward to update your client-side GraphQL data by refetching queries from the server. In theory, you could refetch every active query after a client-side update, but you can save time and network bandwidth by ... The useQuery hook updates and executes queries whenever its inputs, like the query or variables change, but in some cases we may find that we need to programmatically trigger a new query. This is the purpose of the executeQuery method which is a method on the result object that useQuery returns. Aug 23, 2021 · variables will be the variables object passed in useQuery (eg, { name: "Fido" } in this example). We have the option here to return dummy data based on what variables are passed. Or, as we are doing in our test, we can ignore the return value and assert with expect that our spy was called with the variables we are expecting. The problem is that the value state stays null but when I refresh the component (I go into VSCode, I do a random modification and I save) it works. Here's the state and the function : export const pokemonFilters: PokemonFilters = [ { game: `yellow`, version: `yellow`, min: 0, max: 152, }, (a few more objects like that in the array) const [game ... Once again, we'll pass our query to the useQuery hook. This time, we also need to pass the corresponding launch's launchId to the query as a variable. We'll use React Router's useParams hook to access the launchId from our current URL. May 31, 2020 · 14. I need to call a query when submit button is pressed and then handle the response. I need something like this: const [checkEmail] = useLazyQuery (CHECK_EMAIL) const handleSubmit = async () => { const res = await checkEmail ( { variables: { email: values.email }}) console.log (res) // handle response } Try #1: Jul 27, 2022 · I know that you can use the enabled option to force the hook to wait until a certain value exists before becoming active (seen in my invocation of useQuery below) but I can't find a way to provide additional variables for the hook to depend on. Any help is appreciated. Mar 19, 2023 · this works, because you can't expect await refetch() to change the data variable in the closure (the result from useQuery). So you have to use the result returned from refetch(). If you only need the query to eventually call refetch, I would use queryClient.fetchQuery instead. – Aug 10, 2020 · the query qUsuario is: query qUsuario ($user:ID!) { user (id:$user) { email, firstName, lastName, } } but in the first time i got the follow error: [GraphQL error]: Variable "$user" of required type "ID!" was not provided. and then in few milliseconds later, the query works! Mar 19, 2023 · this works, because you can't expect await refetch() to change the data variable in the closure (the result from useQuery). So you have to use the result returned from refetch(). If you only need the query to eventually call refetch, I would use queryClient.fetchQuery instead. – Apollo Client allows you to make local modifications to your GraphQL data by updating the cache, but sometimes it's more straightforward to update your client-side GraphQL data by refetching queries from the server. In theory, you could refetch every active query after a client-side update, but you can save time and network bandwidth by ... Nov 28, 2022 · 1 It because: setParticipant change state asynchronously, useEffect invokes after render actually happend so even if data.participant is not empty, participant is, until next render phase You could change to this: const ProfilePage = ( { id }) => { //... if (loading || !participant) { return <div>Loading</div>; } //... } Share The first parameter to useQuery is a string and this is how the hook knows what to cache when data is returned. You want to make sure this is unique. Another optional way of creating this “cache key”, is to pass it an array of strings. react-query will combine them into one string. As mentioned, you’ll want to make the cache key unique ... Apollo Link is a library that helps you customize Apollo Client's network communication. You can use it to define a link chain that modifies your operations and routes them to the appropriate destination. To execute subscriptions over WebSocket, you can add a GraphQLWsLink to your link chain. This link requires the graphql-ws library. Aug 3, 2022 · This also caused a bug when I upgraded. For my use case I have a list of email threads on the left side and the current thread on the right side. Oct 14, 2022 · I have a NextJS project that uses NextAuth for session management and then React Query to retrieve data on the front-end. However, with the current format (as seen below), useSession() will return Oct 14, 2022 · I have a NextJS project that uses NextAuth for session management and then React Query to retrieve data on the front-end. However, with the current format (as seen below), useSession() will return Nov 5, 2020 · I have these 3 functions that need to run in order. However, since the first function has a loop in it, the 2nd and 3rd functions are finishing before the data from the 1st function is available. ... Each one of them will become a reactive object. These reactive queries will be executed automatically, both when the component is mounted, and if/when any variable objects change. Great! Now let's define the graphql query to be used: Open src/graphql-operations/index.ts and add the following code: src/graphql-operations/index.ts Copy Jul 14, 2022 · React Query’s useQuery(query, fn) is a Hook that fetches data based on the query passed to it and then stores the data in its parent variable. A query, in this case, consists of a unique key and an asynchronous function that is acted upon. The useQuery hook runs automatically on component render, whereas the useMutation hook returns a mutate function needed to trigger the mutation The useQuery hook is used to send queries, whereas the useMutation hook is used to send mutations The useQuery hook returns an array, whereas the useMutation hook returns an object Only the useQuery hook accepts variables The useQuery hook returns an ... Feb 7, 2022 · DriesVerb September 7, 2022, 9:22am 5. I had this exact same issue and I found a workaround. What you want to do is wrap your graph query in a function and pass your nested variable as a parameter. You can also do this for the primary variables. export const functionName = (limit, skip, stateProvince) => { const CATALOG_QUERY = gql` query ... Jul 19, 2020 · This solution is a nice balance between smooth experience that users can see the cached result first without waiting and accurate result, which then updates to the UI. Nov 14, 2020 · This can be achived using useEffect ( () => {// send the request}, [criteria]) Because, useEffect ensures that the request will send to server only if the setCriteria is finished. But, I am using react-query library. so that, it is not allowed to use useQuery inside useEffect. As A result, the request is send to server before it the setState is ... Each one of them will become a reactive object. These reactive queries will be executed automatically, both when the component is mounted, and if/when any variable objects change. Great! Now let's define the graphql query to be used: Open src/graphql-operations/index.ts and add the following code: src/graphql-operations/index.ts Copy The useQuery hook. The useQuery hook returns an object with three useful properties that we use in our app: indicates whether the query has completed and results have been returned. is an object that contains any errors that the operation has thrown. contains the results of the query after it has completed. To set in our query, we declare them ... The useQuery hook updates and executes queries whenever its inputs, like the query or variables change, but in some cases we may find that we need to programmatically trigger a new query. This is the purpose of the executeQuery method which is a method on the result object that useQuery returns. Optional for the useQuery hook, because the query can be provided as the first parameter to the hook. Required for the Query component. variables { [key: string]: any } An object containing all of the GraphQL variable s your query requires to execute. Each key in the object corresponds to a variable name, and that key's value corresponds to the ... Dependent (or serial) queries depend on previous ones to finish before they can execute. To achieve this, it's as easy as using the enabled option to tell a query when it is ready to run: tsx. // Get the user. const { data: user } = useQuery({. queryKey: ['user', email], Again, this example is similar to the useQuery-based component above, but it differs after the rendering is completed. Because this component relies on a button click to fire a mutation, we use Testing Library's user-event library to simulate a click with its click method. Nov 28, 2022 · 1 It because: setParticipant change state asynchronously, useEffect invokes after render actually happend so even if data.participant is not empty, participant is, until next render phase You could change to this: const ProfilePage = ( { id }) => { //... if (loading || !participant) { return <div>Loading</div>; } //... } Share Jun 27, 2021 · 2 Answers. useQuery ("fetchData", fetchData, { onSuccess: (data) => { console.log ("Get data!"); console.log (data); } }); As simple it could be. Thanks! The onSuccess callback function is called only when the data has been retrieved from the query. Carefully notice that this data is not the one that you're de-structuring from the useQuery ... May 24, 2021 · The useQuery hook accepts a lot more parameters and returns a lot more variables, which have been documented in the React Query docs. The example above is meant to demonstrate the minimum setup ... The useQuery hook. The useQuery hook returns an object with three useful properties that we use in our app: indicates whether the query has completed and results have been returned. is an object that contains any errors that the operation has thrown. contains the results of the query after it has completed. To set in our query, we declare them ... Oct 14, 2022 · I have a NextJS project that uses NextAuth for session management and then React Query to retrieve data on the front-end. However, with the current format (as seen below), useSession() will return Sep 12, 2022 · Set the `enabled` property in the useQuery call. Once the user clicked on that button we will update the fetchPosts state value, which will trigger the component to re-render and the useQuery hook will execute and fetch the data in case the fetchPosts value is true. function Example() { const [fetchPosts, setFetchPosts] = useState(false); const ... Nov 19, 2019 · List of Steps: Step 1: Fetch a query stage. const GetStage = useQuery (confirmStageQuery, { variables: { input: { id: getId.id } } }); Step 2: Based on the response that we get from GetStage, we would like to switch between 2 separate queries. Jun 27, 2021 · 2 Answers. useQuery ("fetchData", fetchData, { onSuccess: (data) => { console.log ("Get data!"); console.log (data); } }); As simple it could be. Thanks! The onSuccess callback function is called only when the data has been retrieved from the query. Carefully notice that this data is not the one that you're de-structuring from the useQuery ... Mar 10, 2021 · In the last post, we did a basic web service request using the useQuery hook. This post will expand this example and make a second request that requires data from the first request. Our requirement. At the moment, our React component requests the people resource in the Star Wars API and displays the character’s name. Jan 26, 2020 · We use graphql-code-generator to generate the introspection file for us. Go to your back-end code, or wherever your graphql.gql file lies, and do: Install GraphQL Code Generator: yarn add graphql yarn add -D @graphql-codegen/cli. Run the initialization wizard: yarn graphql-codegen init. Apollo Link is a library that helps you customize Apollo Client's network communication. You can use it to define a link chain that modifies your operations and routes them to the appropriate destination. To execute subscriptions over WebSocket, you can add a GraphQLWsLink to your link chain. This link requires the graphql-ws library. May 31, 2020 · 14. I need to call a query when submit button is pressed and then handle the response. I need something like this: const [checkEmail] = useLazyQuery (CHECK_EMAIL) const handleSubmit = async () => { const res = await checkEmail ( { variables: { email: values.email }}) console.log (res) // handle response } Try #1: May 31, 2020 · 5 Answers Sorted by: 19 This works for me: const { refetch } = useQuery (CHECK_EMAIL, { skip: !values.email }) const handleSubmit = async () => { const res = await refetch ( { variables: { email: values.email }}) console.log (res) } Share Follow answered Dec 15, 2020 at 16:05 kurtko 1,978 4 30 46 2 Mar 14, 2023 · A query is an asynchronous data source bound to a unique key. TanStack Query uses the useQuery Hook to get the data. In the example, our useQuery takes two parameters, a unique key for the query and a function that returns a Promise. The useQuery returns the following: isLoading: In the fetching state Feb 7, 2022 · DriesVerb September 7, 2022, 9:22am 5. I had this exact same issue and I found a workaround. What you want to do is wrap your graph query in a function and pass your nested variable as a parameter. You can also do this for the primary variables. export const functionName = (limit, skip, stateProvince) => { const CATALOG_QUERY = gql` query ... . Queries Basics. The useQuery function is a composable function thI set up my own project and was experiencing th Jul 19, 2020 · This solution is a nice balance between smooth experience that users can see the cached result first without waiting and accurate result, which then updates to the UI. The easiest way of keeping data up to date would be to use the polling feature from apollo. const { loading, error, data } = useQuery (QUERY, { variables: input, skip: !isActivated, pollInterval: 500, // Update every 500ms }); One way of refetching on demand would be to use the returned refetch function. Jul 19, 2020 · This solution is a nice balance between smooth exper Once again, we'll pass our query to the useQuery hook. This time, we also need to pass the corresponding launch's launchId to the query as a variable. We'll use React Router's useParams hook to access the launchId from our current URL. I set up my own project and was experiencing the same issue when using useQuery. UPDATE: After adding an item, useQuery seems to work fine. Intended outcome: value of loading changes to false when data is available. Actual outcome: value of loading never updates to false. Version Jul 27, 2022 · I know that you can use the enabled opt...
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