<?php defined('SYSPATH') OR die('No direct access allowed.');

class Page_Model extends ORM
{
  protected $table_names_plural = FALSE;

  public function unique_key($id)
  {
    if (!empty($id) && is_string($id) && !ctype_digit($id))
    {
      return 'name';
    }

    return parent::unique_key($id);
  }

  public function unique_key_exists($value)
  {
    return (bool) $this->db
      ->where($this->unique_key($value), $value)
      ->count_records($this->table_name);
  }

  public function name_not_exists()
  {
    return (bool) ! $this->db
      ->where(array('name' => $this->name, 'id !=' => $this->id))
      ->count_records($this->table_name);
  }

}