<?php

class Category extends Model
{
	private static $categories = NULL;

	function __construct($fromArray = array())
	{
		$this->_tableName_ = 'categories';
		parent::__construct($fromArray);
		$this->setRelation('points', 'id', 'Point', 'categoryId', self::TO_MANY);
	}

	static function model()
	{
		return new self();
	}

	static function getIcoById($id)
	{
		if (self::$categories === NULL) {
			self::$categories = self::model()->getAll(array('asArray'=>true));
		}

		return (isset(self::$categories[$id])) ? self::$categories[$id]['icon'] : NULL;
	}

}