public static function Tablefield::ajaxCallbackRebuild in TableField 8.2

AJAX callback to rebuild the number of rows/columns.

The basic idea is to descend down the list of #parent elements of the triggering_element in order to locate the tablefield inside of the $form array.

That is the element that we need to return.

Parameters

array $form: Form array.

\Drupal\Core\Form\FormStateInterface $form_state: Form state object.

File

src/Element/Tablefield.php, line 241

Class

Tablefield

Provides a form element for tabular data.

Namespace

Drupal\tablefield\Element

Code

public static function ajaxCallbackRebuild(array $form, FormStateInterface $form_state) {
  $triggering_element = $form_state
    ->getTriggeringElement();

  // Go as deep as 'tablefield' key, but stop there (two more keys follow).
  $parents = array_slice($triggering_element['#array_parents'], 0, -2, TRUE);
  $rebuild = NestedArray::getValue($form, $parents);

  // We don't want to re-send the format/_weight options.
  unset($rebuild['format']);
  unset($rebuild['_weight']);

  // Set row value to default only if there is Add Row button clicked.
  $op = (string) $triggering_element['#value'];
  if ($op === 'Add Row') {
    $rebuild['rebuild']['rows']['#value'] = $rebuild['rebuild']['rows']['#default_value'];
  }
  return $rebuild;
}