use Cake\ORM\Table; class UsersTable extends Table { public function initialize(array $config) { parent::initialize($config); // Set the primary key field for this table $this->primaryKey('id'); } }
use Cake\ORM\TableRegistry; // Retrieve a table object using TableRegistry $users = TableRegistry::getTableLocator()->get('Users'); // Get the primary key field name for the Users table $primaryKey = $users->getPrimaryKey();In this example, the `getTableLocator` method of the CakePHP ORM TableRegistry object is used to retrieve a `Users` table object. The `getPrimaryKey` method of the table object is then called to get the primary key field name for the associated database table. The CakePHP ORM package library is used in these examples to provide an object-relational mapping system for working with database tables in PHP applications.