如何在Joomla! 1.5中利用文章投票实现digg的效果

今天lewis 网友在论坛中问如何利用论坛投票实现digg的一样的效果，具体像http://www.autoit.cn/index.php/content/view/85/25.html 这篇文章中提到的一样，具体实现的代码如下：

首先来修改文章最终页面投票插件的显示位置，具体就是将最终页模板中的这几行：

<?php  if (!$this->params->get('show_intro')) :
 echo $this->article->event->afterDisplayTitle;
endif; ?>
<?php echo $this->article->event->beforeDisplayContent; ?>

放在文章标题显示之前，如果你是Joomla! 1.5.2应该是components/com_content/views/article/tmpl/default.php，第10行的位置：

<td class="contentheading<?php echo $this->params->get( 'pageclass_sfx' ); ?>" width="100%">

就是这一行之后，如果你是自己安装的其他模板，应该在相应的模板目录中。

接下来，我们来修改plugins/content/vote.php文件，源代码如下：

<?php
/**
* @version  $Id: vote.php 9764 2007-12-30 07:48:11Z ircmaxell $
* @package  Joomla
* @copyright Copyright (C) 2005 - 2008 Open Source Matters. All rights reserved.
* @license  GNU/GPL, see LICENSE.php
* Joomla! is free software. This version may have been modified pursuant
* to the GNU General Public License, and as distributed it includes or
* is derivative of works licensed under the GNU General Public License or
* other free or open source software licenses.
* See COPYRIGHT.php for copyright notices and details.
*/

// no direct access
defined( '_JEXEC' ) or die( 'Restricted access' );

$mainframe->registerEvent( 'onBeforeDisplayContent', 'plgContentVote' );

function plgContentVote( &$row, &$params, $page=0 )
{
 $uri = & JFactory::getURI();
 $db = & JFactory::getDBO();

 $id  = $row->id;
 $html  = '';

 if (isset($row->rating_count) && $params->get( 'show_vote' ) && !$params->get( 'popup' ))
 {
  $query = 'select rating_count from #__content_rating where content_id='.$row->id;
  $db->setQuery($query);
  $rating_count = $db->loadResult();
  
  JPlugin::loadLanguage( 'plg_content_vote' );
  $html .= '<span style="background-image: url(/digg.png);background-repeat: no-repeat;widht:100px">';
  $html .= '<form method="post" action="' . $uri->toString( ) . '">';
  $img = '';

  // look for images in template if available
  //$starImageOn  = JHTML::_('image.site',  'rating_star.png', '/images/M_images/' );
  //$starImageOff  = JHTML::_('image.site',  'rating_star_blank.png', '/images/M_images/' );

  //for ($i=0; $i < $row->rating; $i++) {
  // $img .= $starImageOn;
  //}
  //for ($i=$row->rating; $i < 5; $i++) {
  // $img .= $starImageOff;
  //}
  
  //$html .= '<span class="content_rating">';
  //$html .= JText::_( 'User Rating' ) .':'. $img .'&nbsp;/&nbsp;';
  //$html .= intval( $row->rating_count );
  //$html .= "</span>\n<br />\n";

  if (!$params->get( 'intro_only' ))
  {
   $html .= '<span class="content_vote">';
   //$html .= JText::_( 'Poor' );
   $html .= '<input type="submit" style="background-color:transparent;border:0pt none;font-size:14pt;height:62px;padding-bottom:20px;width:55px;" value="'.$rating_count.'" alt="Digg it!" name="submit_vote"/>';
   $html .= '<input type="radio" style="display:none" alt="vote 1 star" name="user_rating" value="1" checked="checked"/>';
   //$html .= '<input type="radio" alt="vote 2 star" name="user_rating" value="2" />';
   //$html .= '<input type="radio" alt="vote 3 star" name="user_rating" value="3" />';
   //$html .= '<input type="radio" alt="vote 4 star" name="user_rating" value="4" />';
   //$html .= '<input type="radio" alt="vote 5 star" name="user_rating" value="5" checked="checked" />';
   //$html .= JText::_( 'Best' );
   //$html .= '&nbsp;<input class="button" type="submit" name="submit_vote" value="'. JText::_( 'Rate' ) .'" />';
   $html .= '<input type="hidden" name="task" value="vote" />';
   $html .= '<input type="hidden" name="option" value="com_content" />';
   $html .= '<input type="hidden" name="cid" value="'. $id .'" />';
   $html .= '<input type="hidden" name="url" value="'.  $uri->toString( ) .'" />';
   $html .= '</span>';
  }
  $html .= '</form>';
  $html .= '</span>';
 }
 return $html;
}