khosb/application/classes/staticlistmodule.php

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

/**
 * This is class is renders standard values based on DB table row values.
 *
 * @package    OSB
 * @subpackage Utilities
 * @category   Helpers
 * @author     Deon George
 * @copyright  (c) 2010 Deon George
 * @license    http://dev.leenooks.net/license.html
 */
abstract class StaticListModule extends StaticList {
	protected static $record = array();

	/**
	 * Display a static name for a value
	 */
	public static function display($id) {
		// Override our argument list as defined in parent
		list($table,$key,$skey,$value) = func_get_args();
		$db = DB::select($key)->from($table)->where($skey,'=',$value)->execute();

		if ($db->count() !== 1)
			return sprintf('No Value (%s)',$value);
		else
			return $db->get($key);
	}

	/**
	 * This function is to return the cached value of the current active record
	 * This is so that a follow up call to get an attribute of a value retrieved
	 * can reuse the active record values.
	 * This gets over a limitation where the query to form() to get a default
	 * no longer exists (or is invalid) and you want other attributes of the
	 * remaining active record, which may not be the default record.
	 */
	public static function record($table,$attribute,$skey,$value) {
		if (empty(static::$record[$table]))
			return static::display($table,$attribute,$skey,$value);
		else
			return static::$record[$table][$attribute];
	}

	/**
	 * Renders form input
	 */
	public static function form($name,$default='',$addblank=FALSE) {
		// Override our argument list as defined in parent
		list($name,$table,$default,$key,$value,$where,$addblank,$attributes) = func_get_args();

		// @todo - our query type should come from our configuration?
		$db = DB::select()->from($table);

		foreach ($where as $k=>$v) {
			list ($op,$v) = explode(':',$v);
			$db->where($k,$op,$v);
		}

		$db = $db->execute();

		// If we only have one record, dont make a select list
		if ($db->count() == 1) {
			static::$record[$table] = $db->as_array();
			static::$record[$table] = array_shift(static::$record[$table]);

			return Form::hidden($name,$db->get($key)).$db->get($value);
		}

		// Else we return a select list
		$x = array();
		if ($addblank)
			$x[] = '';

		foreach ($db as $record) {
			$x[$record[$key]] = $record[$value];

			// Save our static record, in case we reference this item again.
			if ($record[$key] == $default)
				static::$record[$table] = $record;
		}

		return Form::select($name,$x,$default,$attributes);
	}
}
?>