field.post_update.php

<?php


/**
 * @file
 * Post update functions for Field module.
 */
use Drupal\Core\Entity\Entity\EntityFormDisplay;
use Drupal\Core\Field\Plugin\Field\FieldType\EntityReferenceItem;
use Drupal\field\Entity\FieldStorageConfig;
use Drupal\field\Entity\FieldConfig;

/**
 * Re-save all field storage config objects to add 'custom_storage' property.
 */
function field_post_update_save_custom_storage_property() {
    foreach (FieldStorageConfig::loadMultiple() as $field_storage_config) {
        $field_storage_config->save();
    }
    return t('All field storage configuration objects re-saved.');
}

/**
 * Fixes the 'handler' setting for entity reference fields.
 */
function field_post_update_entity_reference_handler_setting() {
    foreach (FieldConfig::loadMultiple() as $field_config) {
        $field_type_manager = \Drupal::service('plugin.manager.field.field_type');
        $item_class = 'Drupal\\Core\\Field\\Plugin\\Field\\FieldType\\EntityReferenceItem';
        $class = $field_type_manager->getPluginClass($field_config->getType());
        if ($class === $item_class || is_subclass_of($class, $item_class)) {
            // field_field_config_presave() will fix the 'handler' setting on save.
            $field_config->save();
        }
    }
    return t('Selection handler for entity reference fields have been adjusted.');
}

/**
 * Adds the 'size' setting for email widgets.
 */
function field_post_update_email_widget_size_setting() {
    foreach (EntityFormDisplay::loadMultiple() as $entity_form_display) {
        $changed = FALSE;
        foreach ($entity_form_display->getComponents() as $name => $options) {
            if (isset($options['type']) && $options['type'] === 'email_default') {
                $options['settings']['size'] = '60';
                $entity_form_display->setComponent($name, $options);
                $changed = TRUE;
            }
        }
        if ($changed) {
            $entity_form_display->save();
        }
    }
    return t('The new size setting for email widgets has been added.');
}

/**
 * Remove the stale 'handler_submit' setting for entity_reference fields.
 */
function field_post_update_remove_handler_submit_setting() {
    $config = \Drupal::configFactory();
    
    /** @var \Drupal\Core\Field\FieldTypePluginManager $field_type_manager */
    $field_type_manager = \Drupal::service('plugin.manager.field.field_type');
    // Iterate on all field configs.
    foreach ($config->listAll('field.field.') as $field_id) {
        $field = $config->getEditable($field_id);
        $class = $field_type_manager->getPluginClass($field->get('field_type'));
        // Deal only with entity reference fields and descendants.
        if ($class === EntityReferenceItem::class || is_subclass_of($class, EntityReferenceItem::class)) {
            if ($field->get('settings.handler_submit')) {
                // Remove 'handler_settings' from settings.
                $field->clear('settings.handler_submit')
                    ->save();
            }
        }
    }
}