field_inheritance.install

<?php

/**
 * @file
 * Installation and update hooks for the field_inheritance module.
 */

use Drupal\Core\Language\LanguageInterface;

/**
 * Update existing plugins to use the new default plugin.
 */
function field_inheritance_update_8001() {
  $inheritances = \Drupal::entityTypeManager()->getStorage('field_inheritance')->loadMultiple();
  if (!empty($inheritances)) {
    foreach ($inheritances as $inheritance) {
      if ($inheritance->plugin() !== 'entity_reference_inheritance') {
        $inheritance->setPlugin('default_inheritance');
        $inheritance->save();
      }
    }
  }
}

/**
 * Update existing inheritances from old naming format.
 */
function field_inheritance_update_8002() {
  $inheritances = \Drupal::entityTypeManager()->getStorage('field_inheritance')->loadMultiple();
  if (!empty($inheritances)) {
    foreach ($inheritances as $inheritance) {
      // Mimic the MachineName functionality to generate a machine name.
      $label = \Drupal::service('transliteration')->transliterate($inheritance->get('label'), LanguageInterface::LANGCODE_DEFAULT, '_');
      $label = strtolower($label);
      $label = preg_replace('/[^a-z0-9_]+/', '_', $label);
      $id = preg_replace('/_+/', '_', $label);

      if ($inheritance->get('id') !== $inheritance->destinationEntityType() . '_' . $inheritance->destinationEntityBundle() . '_' . $id) {
        $new_inheritance = \Drupal::entityTypeManager()->getStorage('field_inheritance')->create(
          [
            'id' => $id,
            'label' => $inheritance->get('label'),
            'type' => $inheritance->get('type'),
            'sourceEntityType' => $inheritance->sourceEntityType(),
            'sourceEntityBundle' => $inheritance->sourceEntityBundle(),
            'sourceField' => $inheritance->sourceField(),
            'destinationEntityType' => $inheritance->destinationEntityType(),
            'destinationEntityBundle' => $inheritance->destinationEntityBundle(),
            'destinationField' => $inheritance->destinationField(),
            'plugin' => $inheritance->plugin(),
          ]
        );
        $new_inheritance->save();
        $inheritance->delete();
      }
    }
  }
}