k2insertitems.php

<?php
/**
 * @version		2.2
 * @package		Example K2 Plugin (K2 plugin)
 * @author		JoomlaWorks - http://www.joomlaworks.net
 * @copyright	Copyright (c) 2006 - 2014 JoomlaWorks Ltd. All rights reserved.
 * @license		GNU/GPL license: http://www.gnu.org/copyleft/gpl.html
 */

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

/**
 * Example K2 Plugin to render YouTube URLs entered in backend K2 forms to video players in the frontend.
 */

// Load the K2 Plugin API
JLoader::register('K2Plugin', JPATH_ADMINISTRATOR.'/components/com_k2/lib/k2plugin.php');

// Initiate class to hold plugin events
class plgK2Example extends K2Plugin
{

	// Some params
	var $pluginName = 'example';
	var $pluginNameHumanReadable = 'K2 Insert Items';

	function plgK2Example(&$subject, $params)
	{
		parent::__construct($subject, $params);
	}

	/**
	 * Below we list all available FRONTEND events, to trigger K2 plugins.
	 * Watch the different prefix "onK2" instead of just "on" as used in Joomla! already.
	 * Most functions are empty to showcase what is available to trigger and output. A few are used to actually output some code for example reasons.
	 */

	function onK2PrepareContent(&$item, &$params, $limitstart)
	{
		$mainframe = JFactory::getApplication();
		//$item->text = 'It works! '.$item->text;
	}

	function onK2AfterDisplay(&$item, &$params, $limitstart)
	{
		$mainframe = JFactory::getApplication();
		return '';
	}

	function onK2BeforeDisplay(&$item, &$params, $limitstart)
	{
		$mainframe = JFactory::getApplication();
		return '';
	}

	function onK2AfterDisplayTitle(&$item, &$params, $limitstart)
	{
		$mainframe = JFactory::getApplication();
		return '';
	}

	function onK2BeforeDisplayContent(&$item, &$params, $limitstart)
	{
		$mainframe = JFactory::getApplication();
		
		//Find the {K2ID xxx} pattern inside $item->text
		$matches = Array();		
		$count = preg_match_all("/(?<={K2ID:)[^}]*(?=})/", $item->text, $matches);
		
		//Split found patterns to array
		if ($count > 0) {
			$db = JFactory::getDbo();
			// Create a new query object.
			
			$matches = $matches[0];
			for ($i=0; $i<$count; $i++){
				// Select item text	
				$query = $db->getQuery(true);
				$query->select($db->quoteName(array('introtext','fulltext')));
				$query->from($db->quoteName('#__k2_items'));
				$query->where($db->quoteName('id') . ' = '. $db->quote($matches[$i]));
				$db->setQuery($query);
				
				$row = $db->loadAssoc();
				
				//Replace {K2ID:xxx}
				$item->text = str_replace('{K2ID:'.$matches[$i].'}',$row['introtext'].$row['fulltext'],$item->text);
				//unset($query);
			}
		} else {
			//Sorry dude no matches
			return '';
		}
		
		return '';
	}

	// Event to display (in the frontend) the YouTube URL as entered in the item form
	function onK2AfterDisplayContent(&$item, &$params, $limitstart)
	{
		
		$mainframe = JFactory::getApplication();

		// Get the output of the K2 plugin fields (the data entered by your site maintainers)
		$plugins = new K2Parameter($item->plugins, '', $this->pluginName);

		$videoURL = $plugins->get('videoURL_item');

		// Check if we have a value entered
		if (empty($videoURL))
			return;

		// Output
		preg_match('/youtube\.com\/watch\?v=([a-z0-9-_]+)/i', $videoURL, $matches);
		$video_id = $matches[1];

		$output = '
		<p>'.JText::_('Video rendered using the "Example K2 Plugin".').'</p>
		<object width="'.$this->params->get('width').'" height="'.$this->params->get('height').'">
			<param name="movie" value="http://www.youtube.com/v/'.$video_id.'&hl=en&fs=1"></param>
			<param name="allowFullScreen" value="true"></param>
			<param name="allowscriptaccess" value="always"></param>
			<embed src="http://www.youtube.com/v/'.$video_id.'&hl=en&fs=1" type="application/x-shockwave-flash" allowscriptaccess="always" allowfullscreen="true" width="'.$this->params->get('width').'" height="'.$this->params->get('height').'"></embed>
		</object>
		';

		return $output;
	}

	// Event to display (in the frontend) the YouTube URL as entered in the category form
	function onK2CategoryDisplay(&$category, &$params, $limitstart)
	{
		$mainframe = JFactory::getApplication();

		// Get the output of the K2 plugin fields (the data entered by your site maintainers)
		$plugins = new K2Parameter($category->plugins, '', $this->pluginName);

		$output = $plugins->get('videoURL_cat');

		return $output;
	}

	// Event to display (in the frontend) the YouTube URL as entered in the user form
	function onK2UserDisplay(&$user, &$params, $limitstart)
	{
		$mainframe = JFactory::getApplication();

		// Get the output of the K2 plugin fields (the data entered by your site maintainers)
		$plugins = new K2Parameter($user->plugins, '', $this->pluginName);

		$output = $plugins->get('videoURL_user');

		return $output;
	}

} // END CLASS