WP Reactivate

WP Reactivate is a React boilerplate built specifically for WordPress, allowing you to quickly and easily integrate React into your WordPress plugins.

Setup and installation

• Install Node 4.0.0 or greater
• Install Yarn (Or use npm if you prefer)

Usage

• Install required modules: yarn (or npm install)
• Build development version of app and watch for changes: yarn build (or npm run build)
• Build production version of app:yarn prod (or npm run prod)

Quick Start

Introduction

This boilerplate plugin provides three different WordPress views in which an independant React app can be rendered:

• Shortcode
• Widget
• Settings page in the backend (wp-admin)

Each JavaScript root file will correspond to the independant React app to be bundled by Webpack.

webpack.config.js

entry: {
  'js/admin': path.resolve(__dirname, 'app/admin.js'),
  'js/shortcode': path.resolve(__dirname, 'app/shortcode.js'),
  'js/widget': path.resolve(__dirname, 'app/widget.js'),
},

Using the Shortcode

In order to get the shortcode attributes into our Javascript we need to pass them to an object which will be made available to the shortcode.js app via wp_localize_script. Be careful with the security of data you pass here as this will be output in a <script> tag in the rendered html.

includes/class-wpr-shortcode.php

public function shortcode( $atts ) {
  wp_enqueue_script( $this->plugin_slug . '-shortcode-script' );
  wp_enqueue_style( $this->plugin_slug . '-shortcode-style' );

  $object_name = 'wpr_object_' . uniqid();

  $object = shortcode_atts( array(
    'title'       => 'Hello world',
    'api_nonce'   => wp_create_nonce( 'wp_rest' ),
    'api_url'	  => site_url( '/wp-json/wp-reactivate/v1/' ),
  ), $atts, 'wp-reactivate' );

  wp_localize_script( $this->plugin_slug . '-shortcode-script', $object_name, $object );

  $shortcode = '<div class="wp-reactivate-shortcode" data-object-id="' . $object_name . '"></div>';
  return $shortcode;
}

You can access the shortcode attributes via the wpObject prop which is passed into your React container component.

app/containers/Shortcode.jsx

import React, { Component } from 'react';

export default class Shortcode extends Component {
  render() {
    return (
      <div className="wrap">
        <h1>WP Reactivate Frontend</h1>
        <p>Title: {this.props.wpObject.title}</p>
      </div>
    );
  }
}

Using the Widget

In order to get the widget options into our Javascript we need to pass them to an object which will be made available to the widget.js app via wp_localize_script. Be careful with the security of data you pass here as this will be output in a <script> tag in the rendered html.

includes/class-wpr-widget.php

public function widget( $args, $instance ) {
  wp_enqueue_script( $this->plugin_slug . '-widget-script', plugins_url( 'assets/js/widget.js', dirname( __FILE__ ) ), array( 'jquery' ), $this->version );
  wp_enqueue_style( $this->plugin_slug . '-widget-style', plugins_url( 'assets/css/widget.css', dirname( __FILE__ ) ), $this->version );

  $object_name = 'wpr_object_' . uniqid();

  $object = array(
    'title'       => $instance['title'],
    'api_nonce'   => wp_create_nonce( 'wp_rest' ),
    'api_url'	  => site_url( '/wp-json/wp-reactivate/v1/' ),
  );

  wp_localize_script( $this->plugin_slug . '-widget-script', $object_name, $object );

  echo $args['before_widget'];

  ?><div class="wp-reactivate-widget" data-object-id="<?php echo $object_name ?>"></div><?php

  echo $args['after_widget'];
}

You can access the widget options via the wpObject prop which is passed into your React container component.

app/containers/Widget.jsx

import React, { Component } from 'react';

export default class Widget extends Component {
  render() {
    return (
      <div className="wrap">
        <h1>WP Reactivate Widget</h1>
        <p>Title: {this.props.wpObject.title}</p>
      </div>
    );
  }
}

Using the Settings Page

In our admin class we add a sub menu page to the Settings menu using add_options_page and register a setting to be used on the page.

We set 'show_in_rest' to true when registering our setting in order to access our options via the REST API.

includes/class-wpr-admin.php

public function register_settings() {
    register_setting( 'general', 'wpreactivate', array(
        'show_in_rest' 	=> true,
        'type'			=> 'string',
        'description'	=> __( 'WP Reactivate Settings', $this->plugin_slug )
    ) );
}

In the React container component we show how to retrieve and update this setting via the WordPress REST API default Settings endpoint.

We polyfill the browser Fetch API to make requests to the WordPress REST API. It is a powerful API, which can be seen as an evolution of XMLHttpRequest or alternative to jQuery.ajax().

app/containers/Admin.jsx

getSetting = () => {
    fetch(`${wpr_object.api_url}settings`, {
        credentials: 'same-origin',
        method: 'GET',
        headers: {
            'Content-Type': 'application/json',
            'X-WP-Nonce': wpr_object.api_nonce,
        },
    })
    .then(response => response.json())
    .then(
        (json) => this.setState({ settings: json.wpreactivate }),
        (err) => console.log('error', err)
    );
};

Technologies

Tech	Description
React	A JavaScript library for building user interfaces.
Babel	Compiles next generation JS features to ES5. Enjoy the new version of JavaScript, today.
Webpack	For bundling our JavaScript assets.
ESLint	Pluggable linting utility for JavaScript and JSX

Credits

Made by Pangolin