function hook_form

Display a node editing form.

This hook, implemented by node modules, is called to retrieve the form that is displayed to create or edit a node. This form is displayed at path node/add/[node type] or node/[node ID]/edit.

The submit and preview buttons, administrative and display controls, and sections added by other modules (such as path settings, menu settings, comment settings, and fields managed by the Field UI module) are displayed automatically by the node module. This hook just needs to return the node title and form editing fields specific to the node type.

Parameters

Drupal\node\Node $node: The node being added or edited.

$form_state: The form state array.

Return value

An array containing the title and any custom form elements to be displayed in the node editing form.

Related topics

File

drupal/core/modules/node/node.api.php, line 1127

Hooks provided by the Node module.

Code

function hook_form(Drupal\node\Node $node, &$form_state) {
  $type = node_type_load($node->type);
  $form['title'] = array(
    '#type' => 'textfield',
    '#title' => check_plain($type->title_label),
    '#default_value' => !empty($node->title) ? $node->title : '',
    '#required' => TRUE,
    '#weight' => -5,
  );
  $form['field1'] = array(
    '#type' => 'textfield',
    '#title' => t('Custom field'),
    '#default_value' => $node->field1,
    '#maxlength' => 127,
  );
  $form['selectbox'] = array(
    '#type' => 'select',
    '#title' => t('Select box'),
    '#default_value' => $node->selectbox,
    '#options' => array(
      1 => 'Option A',
      2 => 'Option B',
      3 => 'Option C',
    ),
    '#description' => t('Choose an option.'),
  );
  return $form;
}