2 * Implements hook_field_formatter_settings_form().
4 function {{ machine_name }}_field_formatter_settings_form($field, $instance, $view_mode, $form, &$form_state) {
5 $display = $instance['display'][$view_mode];
6 $settings = $display['settings'];
10 if ($display['type'] == 'text_trimmed' || $display['type'] == 'text_summary_or_trimmed') {
11 $element['trim_length'] = array(
12 '#title' => t('Length'),
13 '#type' => 'textfield',
15 '#default_value' => $settings['trim_length'],
16 '#element_validate' => array('element_validate_integer_positive'),