stokic

Default form-coupon.php template looks like this:

<?php
/**
 * Checkout coupon form
 *
 * @author      WooThemes
 * @package     WooCommerce/Templates
 * @version     1.6.4
 */

if ( ! defined( 'ABSPATH' ) ) exit; // Exit if accessed directly

global $woocommerce;

if ( ! WC()->cart->coupons_enabled() )
    return;

$info_message = apply_filters( 'woocommerce_checkout_coupon_message', __( 'Have a coupon?', 'woocommerce' ) );
$info_message .= ' <a href="#" class="showcoupon">' . __( 'Click here to enter your code', 'woocommerce' ) . '</a>';
wc_print_notice( $info_message, 'notice' );
?>

<form class="checkout_coupon" method="post" style="display:none">

    <p class="form-row form-row-first">
        <input type="text" name="coupon_code" class="input-text" placeholder="<?php _e( 'Coupon code', 'woocommerce' ); ?>" id="coupon_code" value="" />
    </p>

    <p class="form-row form-row-last">
        <input type="submit" class="button" name="apply_coupon" value="<?php _e( 'Apply Coupon', 'woocommerce' ); ?>" />
    </p>

    <div class="clear"></div>
</form>

Try first renaming/deleting your custom form-coupon.php to see if the default one works, if so you know it’s template issue so use the default one with appropriate changes…

I suppose you could use get_user_meta()

http://codex.ww.wp.xz.cn/Function_Reference/get_user_meta

$fb_uid = get_user_meta($user_id, 'fb_uid', true);

I hope this helps…

p.s. I’m not sure if there is a way to get this from session….