reading feeds with a datasource in cakephp

gumtree.php

<?php
	class Gumtree extends JobAppModel{
		public $name = 'Gumtree';

		public $useDbConfig = 'Libs.XmlSource';

		public $actsAs = false;

		public $useTable = false;

		public $schema = array(
			'title' => array(
				'type' => 'string',
				'null' => true,
				'key' => 'primary',
				'length' => 255
			),
			'description' => array(
				'type' => 'text',
				'null' => true,
				'key' => 'primary',
				'length' => null
			),
			'pubDate' => array(
				'type' => 'string',
				'null' => true,
				'key' => 'primary',
				'length' => 255
			),
			'link' => array(
				'type' => 'string',
				'null' => true,
				'key' => 'primary',
				'length' => 255
			)
		);

		public $request = array(
			'url' => 'http://www.gumtree.com/cgi-bin/list_postings.pl',
			'params' => array(
				'feed' => 'rss',
				'search_location' => '',
				'ubercat' => '',
				'search_terms' => ''
			)
		);


		public $map = array(
			'data'   => 'Rss.Channel.Item'
		);

		public function __construct($id = false, $table = null, $ds = null) {
			parent::__construct($id, $table, $ds);
		}

		public function beforeFind($queryData){
			if(isset($queryData['conditions'][$this->alias . '.ubercat'])){
				$this->request['params']['ubercat'] = $queryData['conditions'][$this->alias . '.ubercat'];
			}

			if(isset($queryData['conditions'][$this->alias . '.search_terms'])){
				$this->request['params']['search_terms'] = $queryData['conditions'][$this->alias . '.search_terms'];
			}
			
			$queryData['conditions'] = array();
			
			return parent::beforeFind($queryData);
		}
	}

	$data = $this->Gumtree->find(
		'all',
		array(
			'conditions' => array(
				'Gumtree.ubercat' => 'cars',
				'Gumtree.search_terms' => 'ford'
			)
		)
	);

	// xml source gets
	/*

	<?xml version="1.0" encoding="UTF-8" ?>
	<Rss version="2.0">
		<Channel>
				<title>Gumtree Stuff</title>
				<description>This is an example of an RSS feed</description>
				<link>http://www.someexamplerssdomain.com/main.html</link>
				<lastBuildDate>Mon, 06 Sep 2010 00:01:00 +0000 </lastBuildDate>
				<pubDate>Mon, 06 Sep 2009 16:45:00 +0000 </pubDate>

				<Item>
						<title>Example entry</title>
						<description>Here is some text containing an interesting description.</description>
						<link>http://www.wikipedia.org/</link>
						<pubDate>Mon, 06 Sep 2009 16:45:00 +0000 </pubDate>
				</Item>

		</Channel>
	</Rss>

	'data'   => 'Rss.Channel.Item' maps to <Rss><Channel><Itme></Item>



	 */
	
	// output
	array(
		array(
			'Gumtree' => array(
				'title' => 'some car',
				'description' => 'foo bar...',
				'pubDate' => '2009-09-06 16:45:00',
				'link' => 'http://gumtree.co.uk/cars/ford-foo-bar'
			)
		),
		array(
			'Gumtree' => array(
				'title' => 'some car2',
				'description' => 'foo bar...',
				'pubDate' => '2009-09-06 16:45:00',
				'link' => 'http://gumtree.co.uk/cars/ford2-foo-bar'
			)
		)
	);