Friday 17 October 2008 6:42:12 am

My suggestion to realize the download of a scaled image is the following:

<b>1. My download link looks like this .../content/download/<contentobject_id>/<node_id>/<filename_of_the_relevant_image_alias></b>

The filename of the relevant image alias could be for example: my_image_small.jpg

<b>2. Creating a new module with a customized binaryhandler (myfilepassthroughhandler.php)</b>
The determining function which has to be tuned is handleFileDownload. In this function the path to the scaled image has to be detected.
This is the way I detect the path (replace the line "$fileName = $fileInfo['filepath'];"):

if( $contentObjectAttribute->DataTypeString == 'ezimage'){
    $myPathInfoList = array_reverse( split( '/', $_SERVER['PATH_INFO'] ) );

    $myObjectDataArray = $contentObjectAttribute->Content->ContentObjectAttributeData;

    $myBasename = $myObjectDataArray['DataTypeCustom']['alias_list']['original']['basename'];
    $myFilename = $myPathInfoList[0];

    $myPostfixList = split( $myBasename, $myFilename );

    $myAlias = splitFilename( $myPostfixList[1] );
    $myFullPath = $myObjectDataArray['DataTypeCustom']['alias_list'][$myAlias]['full_path'];

    $fileName = $myFullPath;
}
else {
    $fileName = $fileInfo['filepath'];
}

The function splitFilename looks like this:

function splitFilename( $filename )
{
    $pos = strrpos($filename, '.');
    if ($pos === false)
    { // dot is not found in the filename
        return 0; // no extension
    }
    else
    {
        $basename = substr($filename, 0, $pos);
        $extension = substr($filename, $pos+1);
        return ltrim( $basename, '_');
    }
}

<b>3. Access to var-directory has to be limited via htaccess-file</b>