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Tuesday, December 7, 2021
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GraphQLReactjs

Reactjs GraphQL Tutorial – Fetching Data

Reactjs GraphQL Tutorial - Fetching Data

Hello friends, welcome back to my blog. Today in this blog post, I am going to show you, Reactjs GraphQL Tutorial – Fetching Data.


React GraphQL
Reactjs GraphQL Tutorial - Fetching Data
Reactjs GraphQL Tutorial – Fetching Data

For reactjs new comers, please check the below links. For application better look I use Bootstrap 5:

Reactjs Basic Tutorials

Bootstrap 5 Tutorials


Friends now I proceed onwards and here is the working code snippet and please use this carefully to avoid the mistakes:

1. Firstly, we need fresh reactjs setup and for that, we need to run below commands into out terminal and also we should have latest node version installed on our system:

npx create-react-app reactgql

cd reactgql

2. Now we need to run below commands into our project terminal to get bootstrap( Optional ), graphql related modules into our reactjs application:

npm install bootstrap@next --save

npm install @apollo/client graphql

npm start

3. Finally for the main output, we need to add below code into our reactboot5/src/App.js file or if you have fresh setup then you can replace reactgql/src/App.js file code with below code:

import React from 'react';

//Bootstrap and graphql libraries
import 'bootstrap/dist/css/bootstrap.min.css';

import { useQuery, gql } from "@apollo/client";

//set data query
const STATIONS_QUERY = gql`
  {
    stations {
      name
      station_id
      availability{
          num_bikes_available
          num_docks_available
  }
      
    }
  }
`;

export default function App() {
  const { data, loading, error } = useQuery(STATIONS_QUERY); //create query
  if (loading) return "Loading..."; //query processing
  if (error) return <pre>{error.message}</pre> //if query has issue

  return (
    <div className="container p-5">
      <h1 className="mb-3">Therichpost.com</h1>
      <table class="table table-striped table-hover table-bordered table-lg">
      <thead>
      <tr>
        <th scope="col">Station ID</th>
        <th scope="col">Station Name</th>
        <th>num bikes available</th>
        
      </tr>
    </thead>
    <tbody>
    
        {data.stations.map((station) => (
          <tr>
            <td>{station.station_id}</td>
            <td>{station.name}</td>
            <td>{station.availability.num_bikes_available}</td>
          </tr>
        
        ))}
        </tbody>
      </table>
    </div>
  );
}

4. Guy’s we need to add below code into our reactgql/src/index.js file for set the Apollo client modules:

import React from 'react';
import ReactDOM from 'react-dom';
import './index.css';
import { ApolloProvider, ApolloClient, InMemoryCache } from "@apollo/client";
import App from './App';

//calling api
const client = new ApolloClient({
  uri: "yourgraphqlURL",
  cache: new InMemoryCache()
});

ReactDOM.render(
  <ApolloProvider client={client}>
  <App />
</ApolloProvider>,
  document.getElementById('root')
);

Now we are done friends. If you have any kind of query or suggestion or any requirement then feel free to comment below.

Note: Friends, I just tell the basic setup and things, you can change the code according to your requirements.

I will appreciate that if you will tell your views for this post. Nothing matters if your views will be good or bad.

Jassa

Thanks

Ajay Malhotra
the authorAjay Malhotra
Hello to all. Welcome to therichpost.com. Myself Ajay Malhotra and I am freelance full stack developer. I love coding. I know WordPress, Core php, Angularjs, Angular 2, Angular 6, Angular 7, Angular 8, Angular 9, Angular 10, Angular 11, Angular12, Angular 13, Bootstrap 5, Nodejs, Laravel, Codeigniter, Shopify, Squarespace, jQuery, Google Map Api, Vuejs, Reactjs, Big commerce etc.

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