README

The plugin basically hooks up to 'login_init', and listens to requests which have a Response-Type header set to 'json'. It also checks for $_REQUEST['RESPONSE_TYPE'], if for some reason you can't set the request headers.

Installing

The best way to install is using Composer.

composer require redandblue/rnb-ajax-login

Traditional methods work too.

Example

Code sample (ES6+, production usage requires you to use a Webpack or Rollup and Babel or Bublé):

<form action="/wp-login.php">
  <!-- The input names are critical! -->
  <input type="text" name="log">
  <input type="password" name="pwd">
  <input type="checkbox" name="rememberme" value="forever">

  <!-- If you'd rather do it with an input. I'd recommend using the headers. -->
  <input type="hidden" name="RESPONSE_TYPE" value="json">
  <!-- Also note that this will kill the nojs-fallback. -->

  <input type="submit">
</form>

// ajax-login.js

import 'whatwg-fetch';

export default function(){
  const ajaxLogin = e => {
    const form = e.target;
    const data = new FormData(form);
    const headers = new Headers({
      'Response-Type': 'json'
    });

    fetch(form.action, {
      method: 'POST',
      body: data,
      headers: headers,
      credentials: 'include'
    })
    .then(response => response.json())
    .then(response => { 
      if(response.type === 'success'){
        console.log(response.message);
      } else {
        console.error(response.message);
      }
    });

    e.preventDefault();
  };

  Array.from(document.querySelectorAll('[action="/wp-login.php"]')).forEach(form => {
    form.addEventListener('submit', ajaxLogin);
  });
}

// main.js
import ajaxLogin from './ajax-login.js';
ajaxLogin();

This allows you to AJAXify any standard WP login form. If the user has JavaScript disabled, it will gracefully fallback to the vanilla WordPress way.

Logout

You can also log the current user out by sending a request to admin_ajax.php?action=wp_ajax_logout.

The response will be similar, with either success or error in the response.type.