RandomChunk is a MODX snippet that provides a simple and efficient way to randomly generate one chunk from a list of chunks. The snippet only takes one parameter which is equal to a comma delineated list of chunk names. An example call is below.
[!RandomChunk? &chunks=`chunk1, chunk2`!]
Here is the code for the snippet.
<?php
//Salvatore Sodano
//http://salscode.com
//[!RandomChunk? &chunks=`chunk1, chunk2`!]
//Randomly generates a chunk from a comma delineated list of chunks.
$chunks = str_ireplace(" ","",$chunks);
$charray = explode(",",$chunks);
$count = count($charray) - 1;
$rand = rand(0,$count);
$result = $charray[$rand];
echo "{{".$result."}}";
?>
If you would like to download a text file of the above code, click here.
Copy and paste the snippet code into a new snippet called "RandomChunk". Then simply call the snippet anywhere you would like to generate a chunk randomly. Since the snippet delivers content randomly, an un-cached snippet call is the way to go.