function commerce_coupon_pane_checkout_form in Commerce Coupon 7.2

Same name and namespace in other branches

1. 7 includes/commerce_coupon.checkout_pane.inc \commerce_coupon_pane_checkout_form()

Checkout pane callback: coupon checkout form.

File

includes/commerce_coupon.checkout_pane.inc, line 49

Commerce Checkout pane implementations.

Code

function commerce_coupon_pane_checkout_form($form, &$form_state, $checkout_pane, $order) {

  // Allow to replace pane content with ajax calls.
  $pane_form = array(
    '#prefix' => '<div id="commerce-checkout-coupon-ajax-wrapper">',
    '#suffix' => '</div>',
  );

  // Store the payment methods in the form for validation purposes.
  $pane_form['coupon_code'] = array(
    '#type' => 'textfield',
    '#title' => t('Coupon Code'),
    '#description' => t('Enter your coupon code here.'),
  );
  $pane_form['coupon_add'] = array(
    '#type' => 'button',
    '#value' => t('Add coupon'),
    '#name' => 'coupon_add',
    '#limit_validation_errors' => array(),
    '#ajax' => array(
      'callback' => 'commerce_coupon_add_coupon_callback',
      'wrapper' => 'commerce-checkout-coupon-ajax-wrapper',
    ),
  );
  $error = '';
  if (isset($form_state['triggering_element']) && $form_state['triggering_element']['#name'] == 'coupon_add') {
    $code = $form_state['input']['commerce_coupon']['coupon_code'];
    if (!empty($code)) {
      $coupon = commerce_coupon_redeem_coupon_code($code, $order, $error);
      if ($coupon) {

        // Clear the field value so that the coupon code does not get
        // resubmitted causing an error when user uses main "Continue to next
        // step" submit.
        $pane_form['coupon_code']['#value'] = '';

        // Reload the order so it is not out of date.
        $order = commerce_order_load($order->order_id);

        // Recalculate discounts.
        commerce_cart_order_refresh($order);
      }
    }
    else {
      $error = t('Please enter a code.');
    }
    if (!$error) {

      // If a coupon was invalidated during the cart refresh (e.g. if its
      // discounts failed their conditions), an error message will have been
      // set.
      $error =& drupal_static('commerce_coupon_error_' . strtolower($code));
    }
    if (!$error) {

      // Allow modules/rules to act when a coupon has been successfully added
      // to the cart.
      rules_invoke_all('commerce_coupon_applied_to_cart', $coupon, $order);
    }
    else {
      drupal_set_message($error, 'error');
    }
  }

  // Extract the View and display keys from the cart contents pane setting.
  $pane_view = variable_get('commerce_coupon_checkout_pane_view', 'order_coupon_list|checkout');
  if ($pane_view != 'none') {
    list($view_id, $display_id) = explode('|', $pane_view);
    if (!empty($view_id) && !empty($display_id) && views_get_view($view_id)) {
      $pane_form['redeemed_coupons'] = array(
        '#type' => 'markup',
        '#markup' => commerce_embed_view($view_id, $display_id, array(
          $order->order_id,
        )),
      );
    }
  }

  // Display any new status messages added by this pane within the pane's area.
  if (isset($form_state['triggering_element']) && $form_state['triggering_element']['#name'] == 'coupon_add' && drupal_get_messages(NULL, FALSE)) {
    $pane_form['status_messages'] = array(
      '#type' => 'markup',
      '#markup' => theme('status_messages'),
      '#weight' => -1,
    );
  }
  return $pane_form;
}