Snippet: randomChunk
by W. Shawn Wilkerson | Views:
Mar
16
2012
PHP Source Code
<?php
/**
* File randomChunk.php (requires MODx Revolution 2.1+)
* Created on: 10/13/11 at 7:02 PM
* Project shawn_wilkerson
* @elements
* @version 1.0
* @category
* @author W. Shawn Wilkerson
* @link http://www.shawnWilkerson.com
* @copyright Copyright (c) 2011, Sanity LLC. All rights reserved.
* @license
*
*/
$out = false;
$chunkPrefix = $modx->getOption('chunkPrefix', $scriptProperties, 'random');
$totalChunks = $modx->getOption('totalChunks', $scriptProperties, intval(0));
if ($totalChunks > 0) {
$chunk = $modx->getObject('modChunk', array(
'name' => $chunkPrefix . rand(1, ($totalChunks)),
));
}
if (is_object($chunk)) {
$out = $chunk->process();
}
return $out;
Example Snippet Calls
[[!randomChunk?chunkPrefix=`banner`&totalChunks=`4`]] -- user selectable prefix
[[!randomChunk?&totalChunks=`29`]] -- defaults to random as the prefix
Example Output
Sample 3Comments
Like most randomization code, this relies on a higher number of items to choose from to produce a more noticeable random effect. With fewer modChunks to choose from, it becomes no different than the predictability of flipping coins for heads and tails.
I also created a sub Category to minimize clutter in the Element Tree. This can also become the foundation of eventually implementing a random MODX Revolution Snippet centered on categories, where only the category name is required in the Snippet call.
Also notice, I force the direct process of the modChunk before its being sent to the page.
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