crm_case-1.0.x-dev/crm_case_external_id/crm_case_external_id.module

<?php

/**
 * @file
 * Contains crm_case_external_id.module.
 */

use Drupal\Core\Entity\EntityTypeInterface;
use Drupal\Core\Form\FormStateInterface;

/**
 * Implements hook_entity_bundle_field_info_alter().
 */
function crm_case_external_id_entity_bundle_field_info_alter(&$fields, EntityTypeInterface $entity_type, $bundle) {

  if ($entity_type->id() === 'crm_case') {
    if (isset($fields['external_id'])) {
      // Use the ID as defined in the annotation of the constraint definition.
      $fields['external_id']->addConstraint('CrmCaseExternalId', []);
    }
  }
}

/**
 * Implements hook_form_FORM_ID_alter() for 'field_config_edit_form'.
 */
function crm_case_external_id_form_field_config_form_alter(&$form, FormStateInterface $form_state, $form_id) {
  $field = $form_state->getFormObject()->getEntity();
  if ($field->getName() !== 'external_id' || $field->getTargetEntityTypeId() !== 'crm_case') {
    return;

  }
  $crm_case_bundles = \Drupal::entityTypeManager()->getStorage('crm_case_type')->loadMultiple();
  $options = [];
  foreach ($crm_case_bundles as $crm_case_bundle) {
    $options[$crm_case_bundle->id()] = $crm_case_bundle->label();
  }

  $form['third_party_settings']['external_id'] = [
    '#type' => 'details',
    '#title' => t('External Id settings'),
    '#open' => TRUE,
    '#group' => 'advanced',
    '#weight' => 100,
  ];

  $form['third_party_settings']['external_id']['bundles'] = [
    '#type' => 'checkboxes',
    '#title' => t('Bundles'),
    '#options' => $options,
    '#default_value' => $field->getThirdPartySetting('external_id', 'bundles', []),
  ];
  $form['third_party_settings']['external_id']['negate'] = [
    '#type' => 'radios',
    '#title' => t('Negate'),
    '#options' => [
      0 => t('Include'),
      1 => t('Exclude'),
    ],
    '#default_value' => $field->getThirdPartySetting('external_id', 'negate', 0),
  ];

  $form['#validate'][] = 'crm_case_external_id_form_field_config_form_validate';
}

/**
 * Validation for 'field_config_edit_form'.
 */
function crm_case_external_id_form_field_config_form_validate(&$form, FormStateInterface $form_state) {

  $third_party_settings = $form_state->getValue('third_party_settings');
  $bundles = $third_party_settings['external_id']['bundles'];
  $bundles = array_filter($bundles);
  if (empty($bundles)) {
    return;
  }

  $field = $form_state->getFormObject()->getEntity();
  $bundle = $field->getTargetBundle();
  $in_array = in_array($bundle, $bundles);
  $negate = $third_party_settings['external_id']['negate'];

  if ($negate && $in_array) {
    $form_state->setErrorByName('third_party_settings][external_id][bundles', t('The bundle %bundle is selected and negate is enabled.', ['%bundle' => $bundle]));
  }
  elseif (!$negate && !$in_array) {
    $form_state->setErrorByName('third_party_settings][external_id][bundles', t('The bundle %bundle is not selected and negate is disabled.', ['%bundle' => $bundle]));
  }

}