function commerce_braintree_dropin_form_alter in Commerce Braintree 7.2

Same name and namespace in other branches

1. 7.3 modules/commerce_braintree_dropin/commerce_braintree_dropin.module \commerce_braintree_dropin_form_alter()

Implements hook_form_alter().

File

modules/commerce_braintree_dropin/commerce_braintree_dropin.module, line 43

Provides integration with Braintree Drop-in UI.

Code

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

  // Check to see if this is a checkout form and there is payment form element.
  if (strstr($form_id, 'commerce_checkout_form') && !empty($form['commerce_payment']) && !empty($form_state['order']->payment_methods)) {

    // Determine if Braintree Drop-in is available for this order.
    $payment_methods = $form_state['order']->payment_methods;
    foreach ($payment_methods as $payment_method) {
      if ($payment_method['method_id'] == 'braintree_dropin') {
        $drop_in = TRUE;
      }
    }
    if (!empty($drop_in)) {

      // Make sure the Drop-in javascript api is included.
      $form['#attached']['js'][] = array(
        'data' => 'https://js.braintreegateway.com/v2/braintree.js',
        'type' => 'external',
      );

      // When there is more than 1 payment method available, replace the
      // ajax handler for the payment method selector so that the entire
      // form is reloaded. Otherwise you cannot switch between different
      // payment methods during checkout. This is because Braintree
      // Drop-in hijacks the form event handlers.
      if (count($payment_methods) > 1) {
        $form['#prefix'] = '<div id="commerce-braintree-dropin-checkout-wrapper">';
        $form['#suffix'] = '</div>';
        $form['commerce_payment']['payment_method']['#ajax'] = array(
          'callback' => 'commerce_braintree_dropin_checkout_ajax',
          'wrapper' => 'commerce-braintree-dropin-checkout-wrapper',
        );
      }
    }
  }
}