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Async React-Select Dropdown using Rest API

 3 years ago
source link: https://www.js-tutorials.com/react-js/react-select-async-dropdown-using-rest-api/
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This tutorial will show you how to use react-select to create an async dropdown. I’m also utilising useState hooks to set and receive selected values, as well as Axios to retrieve data from the rest API.

I have already shared tutorial Create React Dropdown Select without Async.

Here, I am creating the same above functionality using rest API with async.

What’s react-select library

React-select is a flexible and beautiful Select Input control for ReactJS with multiselect, autocomplete, async and creatable support.This library includes features such as search/filter items, ajax operation, and so on.

It has the following features:

  • Flexible approach to data, with functions that can be customised.
  • Extensible styling API with emotion.
  • Component Injection API for complete control over the UI behavior.
  • Controllable state props and modular architecture.
  • Long-requested features like option groups, portal support, animation, and more.

Dynamically Create Dropdown Using React

Let’s make a react app that generates a dropdown list dynamically. All requirements will be installed with the following command:

Install React and other libraries

Let’s create a react application using create-react-app :

npx create-react-app reactselect-poc

Now, navigate to the project folder.

cd reactselect-poc

install React-Select v2

Use the following command to add the react-select package to your React-Select v2 installation.

yarn add react-select
# or
npm install react-select –save

Install Bootstrap 4

install Bootstrap 4 using the following command.

yarn add bootstrap
# or
npm install bootstrap –save

How To install Axios

Use the following command to add the react-select package to your React-Select v2 installation.

yarn add axios
# or
npm install axios –save

Generate Dropdown List Using React

We’ll create api method into the scr/api/dummy.js file:

import axios from ‘axios’;

export default axios.create({
baseURL: ‘https://reqres.in/api’,
headers: {
},
});

We’ll import above file on the top of the app.js file.Let’s open the src/App.js file and added below code in this file:

// App.js
import React,{ useState, useEffect } from 'react';
import 'bootstrap/dist/css/bootstrap.min.css';
import dummy from './api/dummy'
import AsyncSelect from 'react-select/async';
function App() {
  const [items, setItems] = useState([]);
  const [inputValue, setValue] = useState('');
  const [selectedValue, setSelectedValue] = useState(null);
  // handle input change event
  const handleInputChange = value => {
    setValue(value);
  // handle selection
  const handleChange = value => {
    setSelectedValue(value);
  const fetchData = () => {
    return  dummy.get('/users?page=1').then(result => {
      const res =  result.data.data;
      return res;
return (
  <div className="container">
    <div className="row alert alert-info">Selected Value: {JSON.stringify(selectedValue || {}, null, 2)}</div>
    <div className="row">
      <div className="col-md-4"></div>
      <div className="col-md-4">
        <AsyncSelect
        cacheOptions
        defaultOptions
        value={selectedValue}
        getOptionLabel={e => e.first_name + ' ' + e.last_name}
        getOptionValue={e => e.id}
        loadOptions={fetchData}
        onInputChange={handleInputChange}
        onChange={handleChange}
      />
      </div>
      <div className="col-md-4"></div>
    </div>
  </div>
export default App

There are following steps added in the above code:

  • Imported all dependencies at top of the file
  • Define states variables
  • Define EventHandler methods
  • Create a function fetchData to fetch the list where we will integrate the API using the axios HTTP Get method.
  • I used AsyncSelect component and passed fetchData method to render the async component and display the values across the page.
  • We have used the getOptionLabel and getOptionValue to manage the attribute first_name/last_name for label and id for value in dropdown.

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