/**
* {@inheritdoc}
*/
public function buildForm(array $form, FormStateInterface $form_state, FieldInstanceConfigInterface $field_instance_config = NULL)
{
$this->instance = $form_state['instance'] = $field_instance_config;
$bundle = $this->instance->bundle;
$entity_type = $this->instance->entity_type;
$field_storage = $this->instance->getFieldStorageDefinition();
$bundles = entity_get_bundles();
$form_title = $this->t('%instance settings for %bundle', array('%instance' => $this->instance->getLabel(), '%bundle' => $bundles[$entity_type][$bundle]['label']));
$form['#title'] = $form_title;
$form['#field'] = $field_storage;
// Create an arbitrary entity object (used by the 'default value' widget).
$ids = (object) array('entity_type' => $this->instance->entity_type, 'bundle' => $this->instance->bundle, 'entity_id' => NULL);
$form['#entity'] = _field_create_entity_from_ids($ids);
$items = $form['#entity']->get($this->instance->getName());
if (!empty($field_storage->locked)) {
$form['locked'] = array('#markup' => $this->t('The field %field is locked and cannot be edited.', array('%field' => $this->instance->getLabel())));
return $form;
}
// Create a form structure for the instance values.
$form['instance'] = array('#tree' => TRUE);
// Build the non-configurable instance values.
$form['instance']['field_name'] = array('#type' => 'value', '#value' => $this->instance->getName());
$form['instance']['entity_type'] = array('#type' => 'value', '#value' => $entity_type);
$form['instance']['bundle'] = array('#type' => 'value', '#value' => $bundle);
// Build the configurable instance values.
$form['instance']['label'] = array('#type' => 'textfield', '#title' => $this->t('Label'), '#default_value' => $this->instance->getLabel() ?: $field_storage->getName(), '#required' => TRUE, '#weight' => -20);
$form['instance']['description'] = array('#type' => 'textarea', '#title' => $this->t('Help text'), '#default_value' => $this->instance->getDescription(), '#rows' => 5, '#description' => $this->t('Instructions to present to the user below this field on the editing form.<br />Allowed HTML tags: @tags', array('@tags' => _field_filter_xss_display_allowed_tags())) . '<br />' . $this->t('This field supports tokens.'), '#weight' => -10);
$form['instance']['required'] = array('#type' => 'checkbox', '#title' => $this->t('Required field'), '#default_value' => $this->instance->isRequired(), '#weight' => -5);
// Add instance settings for the field type.
$form['instance']['settings'] = $items[0]->instanceSettingsForm($form, $form_state);
$form['instance']['settings']['#weight'] = 10;
// Add handling for default value.
if ($element = $items->defaultValuesForm($form, $form_state)) {
$element += array('#type' => 'details', '#title' => $this->t('Default value'), '#open' => TRUE, '#description' => $this->t('The default value for this field, used when creating new content.'));
$form['instance']['default_value'] = $element;
}
$form['actions'] = array('#type' => 'actions');
$form['actions']['submit'] = array('#type' => 'submit', '#value' => $this->t('Save settings'));
$form['actions']['delete'] = array('#type' => 'submit', '#value' => $this->t('Delete field'), '#submit' => array(array($this, 'delete')));
return $form;
}
/**
* {@inheritdoc}
*/
public function submitForm(array &$form, array &$form_state)
{
$form_values = $form_state['values'];
$field_values = $form_values['field'];
// Save field cardinality.
$cardinality = $field_values['cardinality'];
$cardinality_number = $field_values['cardinality_number'];
if ($cardinality === 'number') {
$cardinality = $cardinality_number;
}
$field_values['cardinality'] = $cardinality;
unset($field_values['container']);
// Merge incoming form values into the existing field.
$field_storage = $this->instance->getFieldStorageDefinition();
foreach ($field_values as $key => $value) {
$field_storage->{$key} = $value;
}
// Update the field.
try {
$field_storage->save();
drupal_set_message($this->t('Updated field %label field settings.', array('%label' => $this->instance->label())));
$request = $this->getRequest();
if (($destinations = $request->query->get('destinations')) && ($next_destination = FieldUI::getNextDestination($destinations))) {
$request->query->remove('destinations');
if (isset($next_destination['route_name'])) {
$form_state['redirect_route'] = $next_destination;
} else {
$form_state['redirect'] = $next_destination;
}
} else {
$form_state['redirect_route'] = FieldUI::getOverviewRouteInfo($this->instance->entity_type, $this->instance->bundle);
}
} catch (\Exception $e) {
drupal_set_message($this->t('Attempt to update field %label failed: %message.', array('%label' => $this->instance->label(), '%message' => $e->getMessage())), 'error');
}
}
