StringLongItem.php

<?php

namespace Drupal\Core\Field\Plugin\Field\FieldType;

use Drupal\Component\Utility\Random;
use Drupal\Core\Field\FieldDefinitionInterface;
use Drupal\Core\Field\FieldStorageDefinitionInterface;

/**
 * Defines the 'string_long' field type.
 *
 * @FieldType(
 *   id = "string_long",
 *   label = @Translation("Text (plain, long)"),
 *   description = @Translation("A field containing a long string value."),
 *   category = @Translation("Text"),
 *   default_widget = "string_textarea",
 *   default_formatter = "basic_string",
 * )
 */
class StringLongItem extends StringItemBase {
    
    /**
     * {@inheritdoc}
     */
    public static function schema(FieldStorageDefinitionInterface $field_definition) {
        return [
            'columns' => [
                'value' => [
                    'type' => $field_definition->getSetting('case_sensitive') ? 'blob' : 'text',
                    'size' => 'big',
                ],
            ],
        ];
    }
    
    /**
     * {@inheritdoc}
     */
    public static function generateSampleValue(FieldDefinitionInterface $field_definition) {
        $random = new Random();
        $values['value'] = $random->paragraphs();
        return $values;
    }

}