function commerce_sagepay_form_alter in Drupal Commerce SagePay Integration 7

Implements hook_form_alter().

Adjust the credit card area of the payment form to include the card logos of active card types.

File

./commerce_sagepay.module, line 611

Code

function commerce_sagepay_form_alter(&$form, &$form_state, $form_id) {

  // If the current form ID is for a checkout form...
  if (strpos($form_id, 'commerce_checkout_form_') === 0) {

    // Check if the payment pane is on this page - return if not.
    if (!isset($form['commerce_payment'])) {
      return;
    }

    // Check if this is the direct payment method.
    // This is the only one that needs card logos.
    $instance_id = $form['commerce_payment']['payment_method']['#default_value'];
    $payment_method = commerce_payment_method_instance_load($instance_id);
    if (strpos($payment_method['instance_id'], 'sagepay_direct') > 0) {
      drupal_add_css(drupal_get_path('module', 'commerce_sagepay') . '/css/sagepay_direct.css');

      // And it specifies a valid checkout page...
      if (commerce_checkout_page_load(substr($form_id, 23))) {

        // And the current page's form includes the payment checkout pane...
        if (!empty($form['commerce_payment'])) {

          // get a list of the currently enabled cards
          $enabled_cards = _commerce_sagepay_populate_card_names(variable_get(SAGEPAY_SETTING_ENABLED_CARDS));

          // if there are nio enabled cards, then get all available cards
          if (empty($enabled_cards)) {
            $enabled_cards = _commerce_sagepay_all_card_names();
          }
          $card_images = theme('commerce_sagepay_card_logos', array(
            'enabled_cards' => $enabled_cards,
          ));
          $payment_details = $form['commerce_payment']['payment_details'];
          if (array_key_exists('credit_card', $payment_details)) {

            // Add credit card logos about the card dropdown.
            array_unshift($form['commerce_payment']['payment_details']['credit_card'], array(
              'logos' => array(
                '#markup' => $card_images,
              ),
            ));

            // Replace the card selection dropdown with one based on our
            // available cards.
            $form['commerce_payment']['payment_details']['credit_card']['type']['#options'] = $enabled_cards;

            // Disable compulsory start date field as not every card has a
            // start date.
            $empty_option = array(
              0 => '-',
            );
            $start_months = $form['commerce_payment']['payment_details']['credit_card']['start_month']['#options'];
            $start_years = $form['commerce_payment']['payment_details']['credit_card']['start_year']['#options'];
            $form['commerce_payment']['payment_details']['credit_card']['start_month']['#options'] = $empty_option + $start_months;
            $form['commerce_payment']['payment_details']['credit_card']['start_month']['#default_value'] = 0;
            $form['commerce_payment']['payment_details']['credit_card']['start_month']['#required'] = FALSE;
            $form['commerce_payment']['payment_details']['credit_card']['start_year']['#options'] = $empty_option + $start_years;
            $form['commerce_payment']['payment_details']['credit_card']['start_year']['#default_value'] = 0;
            $form['commerce_payment']['payment_details']['credit_card']['start_year']['#required'] = FALSE;
          }
        }
      }
    }
  }
}