root/trunk/lib/model/BlogPost.php

<?php
/**
 * Subclass for representing a row from the 'blog_posts' table.
 *
 * @package lib.model
 */ 
class BlogPost extends BaseBlogPost
{
  
  /**
   * Generates and return blog post route
   *
   * @return string
   */
  public function getRoute()
  {
    return sprintf('@blog_post_details?year=%d&month=%s&day=%s&slug=%s',
                   $this->getYear(),
                   $this->getMonth(),
                   $this->getDay(),
                   $this->getSlug());
  }
  
  public function getDay()
  {
    return $this->getCreatedAt('d');
  }
  
  public function getMonth()
  {
    return $this->getCreatedAt('m');
  }
  
  public function getYear()
  {
    return $this->getCreatedAt('Y');
  }
  
}

$columns_map = array('from' => BlogPostPeer::TITLE,
                     'to'   => BlogPostPeer::SLUG);

sfPropelBehavior::add('BlogPost', 
                      array('sfPropelActAsSluggableBehavior' => 
                            array('columns'   => $columns_map, 
                                  'separator' => '-', 
                                  'permanent' => true),
                            'sfPropelActAsTaggableBehavior'));

//sfLucenePropelBehavior::getInitializer()->setupModel('BlogPost');