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No QueryClient set, use QueryClientProvider to set one

I was trying to react query for the first time then I got this at the start of my React app. enter image description here

import React from 'react'
import { useQuery } from "react-query";

const fetchPanets = async () => {
    const result = await fetch('https://swapi.dev/api/people')
    return result.json()
}

const Planets = () => {
    const { data, status } = useQuery('Planets', fetchPanets)
    console.log("data", data, "status", status)
    return (
        <div>
            <h2>Planets</h2>
        </div>
    )
}

export default Planets
over 4 years ago · Santiago Trujillo
5 answers
Answer question

0

import {  QueryClient, QueryClientProvider, useQuery } from 'react-query';
const queryClient = new QueryClient();
const fetchPanets = async () => {
    const result = await fetch('https://swapi.dev/api/people')
    return result.json()
}

const Planets = () => {
    const { data, status } = useQuery('Planets', fetchPanets)
    console.log("data", data, "status", status)
    return (
        <div>
            <h2>Planets</h2>
        </div>
    );
}


export default function Wraped(){
return(<QueryClientProvider client={queryClient}>
        <Planets/>
    </QueryClientProvider>
);
    
}
over 4 years ago · Santiago Trujillo Report

0

While this is most commonly caused by not having your application wrapped in a <QueryClientProvider>, in my case it happened because I was importing some shared components, which ended up with a different context. You can fix this by setting the contextSharing option to true

That would look like:

 import { QueryClient, QueryClientProvider } from 'react-query'
 
 const queryClient = new QueryClient()
 
 function App() {
   return <QueryClientProvider client={queryClient} contextSharing={true}>...</QueryClientProvider>
 }

From the docs: (https://react-query.tanstack.com/reference/QueryClientProvider)

contextSharing: boolean (defaults to false)

Set this to true to enable context sharing, which will share the first and at least one instance of the context across the window to ensure that if React Query is used across different bundles or microfrontends they will all use the same instance of context, regardless of module scoping.

over 4 years ago · Santiago Trujillo Report

0

I was trying to fix the same thing:

I followed the React Query docs and used the concept of Higher Order Component

See if it helps:
import React from 'react';
import { QueryClient, QueryClientProvider, useQuery } from 'react-query';

import Planet from './Planet';

const queryClient = new QueryClient();

const fetchPlanets = async () => {
    const res = await fetch('http://swapi.dev/api/planets/');
    return res.json();
}

const Planets = () => {

    const { data, status } = useQuery('planets', fetchPlanets);

    return (
        <div>
            <h2>Planets</h2>
            { status === 'loading' && (<div>Loading data...</div>)}
            { status === 'error' && (<div>Error fetching data</div>)}
            {
                status === 'success' && (
                    data.results.map(planet =>
                        <Planet
                            key={planet.name}
                            planet={planet}
                        />
                    )
                )
            }
        </div>
    )
}

// Higher order function
const hof = (WrappedComponent) => {
    // Its job is to return a react component warpping the baby component
    return (props) => (
        <QueryClientProvider client={queryClient}>
            <WrappedComponent {...props} />
        </QueryClientProvider>
    );
};

export default hof(Planets);
over 4 years ago · Santiago Trujillo Report

0

As the error suggests, you need to wrap your application in a QueryClientProvider. This is on the first page of the docs:

import { QueryClient, QueryClientProvider, useQuery } from 'react-query'

const queryClient = new QueryClient()

export default function App() {
   return (
     <QueryClientProvider client={queryClient}>
       <Example />
     </QueryClientProvider>
   )
}
over 4 years ago · Santiago Trujillo Report

0

Just make changes like below it will work fine

import React from 'react';
import ReactDOM from 'react-dom';
import './index.css';
import App from './App';
import { QueryClient, QueryClientProvider } from "react-query";
const queryClient = new QueryClient();

ReactDOM.render(
  <QueryClientProvider client={queryClient}>
    <App />
  </QueryClientProvider>,
  document.getElementById('root')
);
over 4 years ago · Santiago Trujillo Report
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