Redirect based on user role.

@jimishsoni1990

By user roles with combination with referer url, we are using something like:

// start global session for saving the referer url
function wcalr_ref_session() {
    if(!session_id()) {
        session_start();
    }
}
add_action('init', 'wcalr_ref_session');

// get referer url and save it 
function wcalr_redirect_url() {
    if ( !is_user_logged_in() && !is_checkout() ) {
        $_SESSION['referer_url'] = $_SERVER['HTTP_REFERER'];
    }
    // Exclude Checkout page
    elseif ( !is_user_logged_in() && is_checkout() ) {
        $_SESSION['referer_url'] = '/payment';
    } 
    else {
        if(session_id()){
            session_destroy();
        }
    }
}
add_action( 'template_redirect', 'wcalr_redirect_url' );

// redirect after LOGIN
add_filter( "wcalr_login_redirect", "wcalr_login_redirect_link", 10, 1);
function wcalr_login_redirect_link($link){
    $link = $_SESSION['referer_url'];
    if(current_user_can('administrator')) {
        $link = admin_url();
    }
    /**** ... ***/
    return $link;
}