function authcache_commerce_form_commerce_cart_add_to_cart_form_alter in Authenticated User Page Caching (Authcache) 7.2

Implements hook_form_FORM_ID_alter().

Remove the uid value from the commerce add-to-cart form.

File

modules/authcache_commerce/authcache_commerce.module, line 13

Authcache support for Drupal Commerce.

Code

function authcache_commerce_form_commerce_cart_add_to_cart_form_alter(&$form, &$form_state) {
  if (authcache_page_is_cacheable()) {

    // Remove the customer uid #value in order to prevent it from entering the
    // form cache. Instead add a validation callback which will restore the
    // value from the $user global upon submission.
    if (isset($form['uid']['#type']) && $form['uid']['#type'] === 'value' && !authcache_element_is_cacheable($form['uid'])) {
      $form['uid']['#value'] = '';
      $form['uid']['#element_validate'][] = 'authcache_commerce_form_restore_customer';
      authcache_element_set_cacheable($form['uid']);
    }

    // The add-to-cart form maintains a list of value elements used to pass
    // attribute state between form rebuilds.
    if (isset($form['unchanged_attributes'])) {
      foreach (element_children($form['unchanged_attributes']) as $key) {
        if (isset($form['unchanged_attributes'][$key]['#type']) && $form['unchanged_attributes'][$key]['#type'] === 'value') {
          authcache_element_set_cacheable($form['unchanged_attributes'][$key]);
        }
      }
    }
  }
}