public function TermForm::form in Drupal 8

Same name and namespace in other branches

1. 9 core/modules/taxonomy/src/TermForm.php \Drupal\taxonomy\TermForm::form()

Gets the actual form array to be built.

Overrides ContentEntityForm::form

See also

\Drupal\Core\Entity\EntityForm::processForm()

\Drupal\Core\Entity\EntityForm::afterBuild()

1 call to TermForm::form()

ForumForm::form in core/modules/forum/src/Form/ForumForm.php

Gets the actual form array to be built.

1 method overrides TermForm::form()

ForumForm::form in core/modules/forum/src/Form/ForumForm.php

Gets the actual form array to be built.

File

core/modules/taxonomy/src/TermForm.php, line 19

Class

TermForm

Base for handler for taxonomy term edit forms.

Namespace

Drupal\taxonomy

Code

public function form(array $form, FormStateInterface $form_state) {
  $term = $this->entity;
  $vocab_storage = $this->entityTypeManager
    ->getStorage('taxonomy_vocabulary');

  /** @var \Drupal\taxonomy\TermStorageInterface $taxonomy_storage */
  $taxonomy_storage = $this->entityTypeManager
    ->getStorage('taxonomy_term');
  $vocabulary = $vocab_storage
    ->load($term
    ->bundle());
  $parent = array_keys($taxonomy_storage
    ->loadParents($term
    ->id()));
  $form_state
    ->set([
    'taxonomy',
    'parent',
  ], $parent);
  $form_state
    ->set([
    'taxonomy',
    'vocabulary',
  ], $vocabulary);
  $form['relations'] = [
    '#type' => 'details',
    '#title' => $this
      ->t('Relations'),
    '#open' => $taxonomy_storage
      ->getVocabularyHierarchyType($vocabulary
      ->id()) == VocabularyInterface::HIERARCHY_MULTIPLE,
    '#weight' => 10,
  ];

  // \Drupal\taxonomy\TermStorageInterface::loadTree() and
  // \Drupal\taxonomy\TermStorageInterface::loadParents() may contain large
  // numbers of items so we check for taxonomy.settings:override_selector
  // before loading the full vocabulary. Contrib modules can then intercept
  // before hook_form_alter to provide scalable alternatives.
  if (!$this
    ->config('taxonomy.settings')
    ->get('override_selector')) {
    $exclude = [];
    if (!$term
      ->isNew()) {
      $parent = array_keys($taxonomy_storage
        ->loadParents($term
        ->id()));
      $children = $taxonomy_storage
        ->loadTree($vocabulary
        ->id(), $term
        ->id());

      // A term can't be the child of itself, nor of its children.
      foreach ($children as $child) {
        $exclude[] = $child->tid;
      }
      $exclude[] = $term
        ->id();
    }
    $tree = $taxonomy_storage
      ->loadTree($vocabulary
      ->id());
    $options = [
      '<' . $this
        ->t('root') . '>',
    ];
    if (empty($parent)) {
      $parent = [
        0,
      ];
    }
    foreach ($tree as $item) {
      if (!in_array($item->tid, $exclude)) {
        $options[$item->tid] = str_repeat('-', $item->depth) . $item->name;
      }
    }
    $form['relations']['parent'] = [
      '#type' => 'select',
      '#title' => $this
        ->t('Parent terms'),
      '#options' => $options,
      '#default_value' => $parent,
      '#multiple' => TRUE,
    ];
  }
  $form['relations']['weight'] = [
    '#type' => 'textfield',
    '#title' => $this
      ->t('Weight'),
    '#size' => 6,
    '#default_value' => $term
      ->getWeight(),
    '#description' => $this
      ->t('Terms are displayed in ascending order by weight.'),
    '#required' => TRUE,
  ];
  $form['vid'] = [
    '#type' => 'value',
    '#value' => $vocabulary
      ->id(),
  ];
  $form['tid'] = [
    '#type' => 'value',
    '#value' => $term
      ->id(),
  ];
  return parent::form($form, $form_state);
}