<?php

class FeaturedVideo extends DataObject {

static $db = array(

'Name' => 'Text',

'Day' => 'Int',

'YouTubeID' => 'Varchar',

'Description' => 'Text',

'URLSegment' => 'Text'

);

static $has_one = array(

'PresentationCategoryPage' => 'PresentationCategoryPage'

);

private function generateURLSegment($title){

$filter = URLSegmentFilter::create();

$t = $filter->filter($title);

// Fallback to generic page name if path is empty (= no valid, convertable characters)

if(!$t || $t == '-' || $t == '-1') $t = "page-$this->ID";

return $t;

}

function onBeforeWrite()

{

parent::onBeforeWrite();

// If there is no URLSegment set, generate one from Title

if ((!$this->URLSegment || $this->URLSegment == 'new-presentation') && $this->Title != 'New Presentation') {

$this->URLSegment = $this->generateURLSegment($this->Title);

} else if ($this->isChanged('URLSegment')) {

// Make sure the URLSegment is valid for use in a URL

$segment = preg_replace('/[^A-Za-z0-9]+/', '-', $this->URLSegment);

$segment = preg_replace('/-+/', '-', $segment);

// If after sanitising there is no URLSegment, give it a reasonable default

if (!$segment) {

$segment = "presentation-" . $this->ID;

}

$this->URLSegment = $segment;

}

// Ensure that this object has a non-conflicting URLSegment value by appending number if needed

$count = 2;

while ($this->LookForExistingURLSegment($this->URLSegment)) {

$this->URLSegment = preg_replace('/-[0-9]+$/', null, $this->URLSegment) . '-' . $count;

$count++;

}

}

//Test whether the URLSegment exists already on another Video

function LookForExistingURLSegment($URLSegment)

{

return (DataObject::get_one('FeaturedVideo', "URLSegment = '" . $URLSegment ."' AND ID != " . $this->ID));

}

}

?>