update-redirect-login

<?php

defined( 'ABSPATH' ) or die( 'No Access' );
/**
 * Plugin Name: Force Redirects
 * Description: Allows admins default behavior and all other users get redirected to where they came from or to the homepage
 * Author:      Mike Andreasen
 */

/**
 * Redirect user after successful login.
 *
 * @param string $redirect_to URL to redirect to.
 * @param string $request URL the user is coming from.
 * @param object $user Logged user's data.
 *
 * @return string
 */
function ma_force_login_redirect( $redirect_to, $request, $user ) {

	if ( isset( $user->roles ) && is_array( $user->roles ) ) {

		// check for an admin role
		if ( in_array( 'administrator', $user->roles ) ) {

			// check for admin's default redirect, which is the homepage for some reason and send them to wp-admin instead
			if( $redirect_to === home_url() ) {
				return get_admin_url();
			} else {
				// redirect to where they came from
				return $redirect_to;
			}

		}
	}

	// default redirect_to is /wp-admin/, detect it and forward to home instead
	if( ma_detect_default_redirect( $redirect_to ) ) {
		return home_url();
	}

	return $redirect_to;

}
add_filter( 'login_redirect', 'ma_force_login_redirect', 9999999, 3 );

/**
 * Determine if we are using the default redirect
 * A subscriber's default appears to be /wp-admin/, but membership2 is directing them to /account/
 *
 * @param string $redirect_to URL to redirect to.
 *
 * @return bool True|False
 */
function ma_detect_default_redirect( $redirect_to ) {
	if( $redirect_to === get_admin_url() ) {
		return true;
	}

	return false;
}