Introduction

Did you know that you can use the eZ Publish kernel api to obtain image alias properties from content object attributes which use the ezimage datatype.

Example

This is a simple php example of how you may use the eZ Publish kernel api to obtain image alias properties. This example comes from a simple example custom module view.

<?php

/**
 * File image.php
 *
 * @package image.php
 * @version //autogentag//
 * @copyright Copyright (C) 2007 Brookins Consulting. All rights reserved.
 * @license http://www.gnu.org/licenses/gpl.txt GPL License
 */

$Module =& $Params['Module'];

// START

// Assume this type of module/view url:
// www.site.com/myextension/mymodule/myview/1234
// 1234 maps to the view parameter, MyNode (eg: $Params["MyNode"])

// 0. Include the necessary files -- I would imagine that some are include

include_once( 'lib/ezdb/classes/ezdb.php' );
include_once( 'lib/ezutils/classes/ezfunctionhandler.php' );
include_once( 'lib/ezutils/classes/ezoperationhandler.php' );
include_once( 'lib/ezutils/classes/ezhttptool.php' );
include_once( 'kernel/common/template.php' );
include_once( 'kernel/classes/ezcontentclass.php' );
include_once( 'kernel/classes/ezpreferences.php' );
include_once( 'kernel/classes/datatypes/ezimage/ezimage.php' );
include_once( 'kernel/classes/datatypes/ezurl/ezurl.php' );
include_once( 'kernel/classes/datatypes/ezurl/ezurlobjectlink.php' );

// 1. Create an instance of the database
$db =& eZDB::instance();

// 2. Query the node via node id
$my_node =& eZContentObject::fetchByNodeID( $Params["MyNode"] );
// $my_node =& eZContentObject::fetchByNodeID( '86' );

// 3. Get a copy of the data_map
$my_node_data_map = $my_node->fetchDataMap();

// 4. Get a reference to the image
$my_node_image = $my_node_data_map["image"];
// $my_node_image_data = $my_node_image->DataText;

// Example Usage of the eZ Image Alias Handler Class / System
include_once( 'kernel/classes/datatypes/ezimage/ezimagealiashandler.php' );

// 5. Fetch Alias Handler
$image_alias_handler = new eZImageAliasHandler( $my_node_image );

// 6. Fetch Alias Attributes*

// 7. Fetch Original Image Path as URI
$my_node_image_uri =  "/" . $image_alias_handler->attributeFromOriginal( 'url' );

// 8. Fetch Original Image Dimentions
$my_node_image_width = $image_alias_handler->attributeFromOriginal( 'width' );
$my_node_image_height = $image_alias_handler->attributeFromOriginal( 'height' );

// 9. Get the associated link
$my_node_link_object = $my_node_data_map["my_link"];
$my_node_link_url_object = eZURL::fetch( $my_node_link_object->DataInt );
$my_node_link_url=str_replace ( "/", "+", $my_node_link_url_object->attribute( 'url' ) );

// 10. Instantiate the template and set the template vars
$tpl =& templateInit();
$tpl->setVariable( 'parameters', $Params );
$tpl->setVariable( 'my_node_image_path', $my_node_image_uri );
$tpl->setVariable( 'my_node_image_width', $my_node_image_width );
$tpl->setVariable( 'my_node_image_height', $my_node_image_height );
$tpl->setVariable( 'my_node_link_url', $my_node_link_url );

// END

// phpinfo();
eZExecution::cleanExit();

?>

References

• ezimagealiashandler