React-query hook imported into a component-CodePudding

Having the following hook:

import { useQuery } from 'react-query';
import axios from 'axios';

export const useGetData = () => {
  const query = 'getData';

  const { isLoading, isError, data, error, refetch, isSuccess } = useQuery(
    query,
    async () => {
      const { data } = await axios(
        'https://api.chucknorris.io/jokes/random'
      );
      return data;
    }
  );

  return {
    data,
    isError,
    isLoading,
    error,
    refetch,
    isSuccess,
  };
};

export default useGetData;

For the beginning, I want to import it into a component and check the values of data, isError and others.

Here is the component:

import React from 'react';
import { QueryClient, QueryClientProvider } from 'react-query';
import useGetData from './components/use-get-data';
const queryClient = new QueryClient({});

function App() {
  const { data, isLoading } = useGetData();
  console.log('data: ', data);
  console.log('isLoading: ', isLoading);
  return (
    <QueryClientProvider client={queryClient}>
      <div className='container'></div>
    </QueryClientProvider>
  );
}

export default App;

It throws the following error:

Uncaught Error: No QueryClient set, use QueryClientProvider to set one
    at useQueryClient

How can this be fixed?

CodePudding user response：

Your call to your hook need to be under the query client provider to access his context. So you need to put it in a component called as a child of QueryClientProvider

CodePudding user response：

You should put the useGetData custom hook in the descendants component of the QueryClientProvider provider so that you can use useQuery hook.

Because useQuery hook use useQueryClient hook underly, see source code, and useQueryClient use useContext hook underly, source code:

export const useQueryClient = () => {
  const queryClient = React.useContext(
    getQueryClientContext(React.useContext(QueryClientSharingContext))
  )

  if (!queryClient) {
    throw new Error('No QueryClient set, use QueryClientProvider to set one')
  }

  return queryClient
}

queryClient context comes from QueryClientProvider so that useContext can get it.