How to use WP-REST API to login user and get user data for Android app?

Question

I want to use Wordpress REST API to Login and get user data on android app.

I am using wp_users table for user and a custom table for user info .

I tried writing my own REST API but i for that i have to make $wpdb accessible outside Wordpress installation.

Please provide yours solution having API-KEY , or something similar , feature too.

Thanks

Answer 1

I found the simplest solution using the WP-REST API plugin,first set this in yours environment :

1.) In your themes functions.php register API endpoint hooks:

add_action( 'rest_api_init', 'register_api_hooks' );
// API custom endpoints for WP-REST API
function register_api_hooks() {

    register_rest_route(
        'custom-plugin', '/login/',
        array(
            'methods'  => 'POST',
            'callback' => 'login',
        )
    );

    function login() {

        $output = array();

        // Your logic goes here.
        return $output;

    }

2.) By default, if you have pretty permalinks enabled, the WordPress REST API “lives” at /wp-json/. Then the API endpoint is accessible at youdomain.com/wp-json/custom-plugin/login with a POST request.

Notice that custom-plugin/login is actually defined in register_rest_route in PHP function register_api_hooks()

For API key I am using Wordpress Nonces - pretty straightforward as in my discussion here . I hope these answers are useful for all full stack developers who are new to Wordpress REST API

Answer 2

If you just want to user login and get user details you can use and excellent plugin called "JSON API AUTH"

https://wordpress.org/plugins/json-api-auth/

There are following methods available: validate_auth_cookie, generate_auth_cookie, clear_auth_cookie, get_currentuserinfo

nonce can be created by calling http://localhost/api/get_nonce/?controller=auth&method=generate_auth_cookie

You can then use ‘nonce’ value to generate cookie. http://localhost/api/auth/generate_auth_cookie/?nonce=f4320f4a67&username=Catherine&password=password-here

Use cookie like this with your other controller calls: http://localhost/api/contoller-name/method-name/?cookie=Catherine|1392018917|3ad7b9f1c5c2cccb569c8a82119ca4fd