form_alter: Inline entity Form

Question

I am using IEF and all is well...until I try ad implement hook_form_alter() and when I access the form via IEF UI (as opposed to directly modifying the entity) none of the changes I make appear to take effect.

I see everything is posted to a ajax/system as well as pulled from when assembling the form...

Is it not possible to hide form elements from the IEF as I would when directly hooking?

Any ideas?

Each line item has a price field which I need to iterate and sum and the apply to the root node. Figured as this module was used in commerce this would be standard practice.

Answer 1

IEF has a hook as outlined in the inline_entity_form.api.php file.

/**
 * Perform alterations before an entity form is included in the IEF widget.
 *
 * @param $entity_form
 *   Nested array of form elements that comprise the entity form.
 * @param $form_state
 *   The form state of the parent form.
 */
function hook_inline_entity_form_entity_form_alter(&$entity_form, &$form_state) {
  if ($entity_form['#entity_type'] == 'commerce_line_item') {
    $entity_form['quantity']['#description'] = t('New quantity description.');
  }
}

Check the inline_entity_form.api.php file as there are a few hooks that you may be able to use.

Answer 2

Also check out hook_field_widget_WIDGET_TYPE_form_alter()

/**
 * Implements hook_field_widget_WIDGET_TYPE_form_alter().
 */
function MY_MODULE_field_widget_inline_entity_form_form_alter(&$element, &$form_state, $context) {
  // Move the Add Existing button to the left of the Add New button.
  if (isset($element['actions']['ief_add_existing'])) {
    $element['actions']['ief_add_existing']['#weight'] = -50;
  }
}