delivery-8.x-1.x-dev/modules/workspaces_negotiator_path/workspaces_negotiator_path.module

<?php

/**
 * @file
 * A workspaces negotiator which uses the path information (the path prefix) to
 *  determine the current workspace.
 */

use Drupal\Core\Entity\EntityTypeInterface;
use Drupal\Core\Field\BaseFieldDefinition;

/**
 * Implements hook_entity_base_field_info().
 */
function workspaces_negotiator_path_entity_base_field_info(EntityTypeInterface $entity_type) {
  if ($entity_type->id() === 'workspace') {
    // Define a path prefix field on the workspaces.
    $fields['path_prefix'] = BaseFieldDefinition::create('string')
      ->setLabel(t('Path prefix'))
      ->setDescription(t('An optional path prefix for this workspace. The prefix has to start with "/", e.g. <em>/stage</em>. If there should be no prefix, but you still want this workspace to be selected, then use "/". That is usually used for a <em>Main</em> or <em>Global</em> workspace. If this field is empty, this workspace will just be ignored by the Path Prefix workspace negotiator.'))
      ->setDisplayOptions('form', [
        'type' => 'string_textfield',
        'weight' => 10,
      ])
      ->setRevisionable(TRUE)
      ->setDisplayConfigurable('form', TRUE);
    return $fields;
  }
}