Usequery wait for variables.
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
Nov 27, 2020 · Writing Our First Reactive Variable #. Here’s what a reactive variable looks like: import { makeVar } from '@apollo/client'; const myReactiveVariable = makeVar (/** An initial value can be passed in here.**/) The makeVar is imported from Apollo Client and is used to declare our a reactive variable. Oct 16, 2020 · read from localstorage, build variables for fetch (offset, limit, ...) fetch with variables; when filters or search change, refetch with modified variables; also save the modified variables to localstorage; My question is: should I use useQuery or useLazyQuery for this purpose. With useQuery, I may could do: 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 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
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 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. – Feb 7, 2021 · 1. Another thing to consider is the default configuration of you useQuery () hook which is provided by the QueryClient. For example rerendering on window focus is a default setting, which causes the hook to refetch and therefore rerender on every window focus (for example when clicking on devtools and click back into the DOM.
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 ... Queries Basics. The useQuery function is a composable function that provides query state and various helper methods for managing the query. To execute a query the useQuery accepts a GraphQL query as the first argument. The query property is a string containing the query body or a DocumentNode (AST) created by graphql-tag. 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:
Mar 24, 2020 · I have a graphql query and useQuery hook which return a lot of data. I start loading by click button and show when the data loading will be finished. Is it possible to use Promise to wait loading d...
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.
Sep 10, 2021 · If you have a mutation that updates the title of your blog post, and the backend returns the complete blog post as a response, you can update the query cache directly via setQueryData: update-from-mutation-response. 1const useUpdateTitle = (id) => {. 2 const queryClient = useQueryClient() 3. 4 return useMutation({. May 31, 2023 · My logic is intended as follows: In useEffect. get {id} from the router. trigger getUserFromId (id) with that id. setUser () with db response. Run the query. get user from state and pass it into variables: {} for query. run the query. I think that my problem is that the useEffect is running after my useQuery so the user i am trying to get from ... 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. Jan 5, 2021 · I have a Higher Order Component and it accepts a prop variable input called "name". Inside HOC, I'm passing "name" as the input to useQuery. If the name's value changes, useQuery hits the backend API and fetches new results but if the value remains the same, there is no network call made by useQuery. HOC gets re-rendered but no n/w call. 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.
When my page loads I am using useQuery to retrieve the data. This works fine. The problem is when I make a change to the search form, this updates the state which causes an unwanted re-render which calls the server again. I want to call the server only when the page loads and when I click the search button. useQuery: 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. The useQuery React hook is the primary API for executing queries in an Apollo application. To run a query within a React component, call useQuery and pass it a GraphQL query string. When your component renders, useQuery returns an object from Apollo Client that contains loading, error, and data properties you can use to render your UI. refetch ( { where: { name_contains: value }} ); it refetches, but it doesn't pass variables to the query, I console logged the results. when running through the playground it passes variables. but this function provided by hooks doesn't pass variables. this is my query. const PLANTS_QUERY = gql` query { plants { plant_name is_active } } `; Aug 27, 2019 · let client = new ApolloClient ( { ssrMode: true, link: authLink.concat (httpLink), cache: new InMemoryCache (), }); To clarify when I say 'block rendering' I mean hold off on SSR finalising until the server has the data to send the user so that the tag will appear immediately with the loaded page. reactjs. graphql.
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 ... 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 ...
Aug 26, 2020 · i need to make one of two queries based on the result of another request to a third party, is there a way to tell Apollo to wait for that request to finish and return the appropriate query for Apollo ? or should i just make the request and add the appropriate query manually to Apollo when i get the results ? Mar 14, 2019 · Normally I put [all, my, query, variables] into the useQuery to avoid multiple runs when other state is changing. @pak11273 I don't understand why you would need another state (useState). Using the data from useQuery should suffice, no? I needed the onComplete to trigger another query which needed data from the first query. 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. – Feb 12, 2022 · React Query dependent queries. We can leverage the enabled property to make queries dependent on a variable. This will tell React Query if this query should be enabled or not, and it can accept anything that calculates to a boolean. const { isIdle, data } = useQuery('your-key', yourQueryFn, { enabled: conditionIsTrue, }); 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. 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. ... Feb 12, 2022 · React Query dependent queries. We can leverage the enabled property to make queries dependent on a variable. This will tell React Query if this query should be enabled or not, and it can accept anything that calculates to a boolean. const { isIdle, data } = useQuery('your-key', yourQueryFn, { enabled: conditionIsTrue, }); Feb 12, 2022 · React Query dependent queries. We can leverage the enabled property to make queries dependent on a variable. This will tell React Query if this query should be enabled or not, and it can accept anything that calculates to a boolean. const { isIdle, data } = useQuery('your-key', yourQueryFn, { enabled: conditionIsTrue, }); 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.
Mar 24, 2020 · I have a graphql query and useQuery hook which return a lot of data. I start loading by click button and show when the data loading will be finished. Is it possible to use Promise to wait loading d...
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 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. Mar 24, 2021 · Using GraphQLClient allows us to set the API key on each request. To get all blog posts from the API, we use the useGetPosts function. The useQuery hook expects a key ( get-posts) and a GraphQL query. The hook can receive more options, but for this example, we just need these two. Once the fetch is done, we return the data. 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 ... 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. Feb 7, 2021 · 1. Another thing to consider is the default configuration of you useQuery () hook which is provided by the QueryClient. For example rerendering on window focus is a default setting, which causes the hook to refetch and therefore rerender on every window focus (for example when clicking on devtools and click back into the DOM. 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. 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 ... Mar 14, 2019 · Normally I put [all, my, query, variables] into the useQuery to avoid multiple runs when other state is changing. @pak11273 I don't understand why you would need another state (useState). Using the data from useQuery should suffice, no? I needed the onComplete to trigger another query which needed data from the first query. Aug 27, 2019 · let client = new ApolloClient ( { ssrMode: true, link: authLink.concat (httpLink), cache: new InMemoryCache (), }); To clarify when I say 'block rendering' I mean hold off on SSR finalising until the server has the data to send the user so that the tag will appear immediately with the loaded page. reactjs. graphql. Mar 10, 2020 · I want the data returned from useQuery to be undefined when the variables change. Reasoning is that if the variables for the query change, loading is set to true, but data remains set to the data from the previous query with old variables. Actual outcome: data is set to the previous variables data while the next query (with new variables) is in ...
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 ... Mar 24, 2020 · I have a graphql query and useQuery hook which return a lot of data. I start loading by click button and show when the data loading will be finished. Is it possible to use Promise to wait loading d... Mar 24, 2020 · I have a graphql query and useQuery hook which return a lot of data. I start loading by click button and show when the data loading will be finished. Is it possible to use Promise to wait loading d... 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. Instagram:https://instagram. kalispell craigslist cars and trucks by ownerstores near samtobieeso shalidor Unlike useQuery, useMutation doesn't execute its operation automatically on render. Instead, you call this mutate function. An object with field s that represent the current status of the mutation 's execution (data, loading, etc.) This object is similar to the object returned by the useQuery hook. For details, see Result. Example 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. rossy3 minute persuasive speech examples Queries Basics. The useQuery function is a composable function that provides query state and various helper methods for managing the query. To execute a query the useQuery accepts a GraphQL query as the first argument. The query property is a string containing the query body or a DocumentNode (AST) created by graphql-tag. atandt broadband outage in my area 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 ... Mar 10, 2020 · I want the data returned from useQuery to be undefined when the variables change. Reasoning is that if the variables for the query change, loading is set to true, but data remains set to the data from the previous query with old variables. Actual outcome: data is set to the previous variables data while the next query (with new variables) is in ...