farm-2.x-dev/modules/taxonomy/log_category/farm_log_category.module
modules/taxonomy/log_category/farm_log_category.module
<?php /** * @file * Contains farm_log_category.module. */ use Drupal\Core\Entity\EntityTypeInterface; /** * Implements hook_entity_base_field_info(). */ function farm_log_category_entity_base_field_info(EntityTypeInterface $entity_type) { // Add category base field to all log types. $fields = []; if ($entity_type->id() == 'log') { $category_info = [ 'type' => 'entity_reference', 'label' => t('Log category'), 'description' => t('Use this to organize your logs into categories for easier searching and filtering later.'), 'target_type' => 'taxonomy_term', 'target_bundle' => 'log_category', 'multiple' => TRUE, 'weight' => [ 'view' => 80, ], 'form_display_options' => [ 'type' => 'options_select', 'weight' => 10, ], ]; $fields['category'] = \Drupal::service('farm_field.factory')->baseFieldDefinition($category_info); } return $fields; }