I've got a working solution (is kind of crazy, but it works
)
1. Install ChunkIf Snippet:
<?php
/*
Version: 0.2
Date: 21/07/2008
Description:
<strong>0.2</strong> Outputs the contents of the chunk passed in
$trueChunk if the template variable passed in $tv is set (i.e. has a value).
Otherwise outputs the contents of the $falseChunk chunk. Expects $tv to be the
name of the Template Variable to test, and $trueChunk & $falseChunk to be names
of chunks.
eg:
[[ChunkIf? &tv=`tvname` &trueChunk=`chunkname` &falseChunk=`chunkname` ]]
- Long version outputs $trueChunk if $tv has a value, otherwise
outputs $falseChunk.
[[ChunkIf? &tv=`tvname` &trueChunk=`chunkname` ]]
- This short version outputs an empty string if $tv has no value.
[[ChunkIf? &tv=`tvname` ]]
- This very short version attempts to output the contents of a chunk
with the same name as $tv
[[ChunkIf? &tv=`tvname` &debug=`1` ]]
- Switches on debugging output - output's HTML comments for debugging.
*/
// get tv name
$tv = isset( $tv ) ? $tv : '';
// get current page ID
$id = isset( $id )? $id: $modx -> documentObject['id'];
// Get the value of $tv
$tvarray = $modx -> getTemplateVarOutput( $tv, $id );
$value = ''.trim($tvarray[$tv]);
if ($debug) {
$dtmp = '<!--';
$dtmp .= 'tv: '.$tv.', ';
$dtmp .= 'id: '.$id.', ';
$dtmp .= 'value: '.$value;
$dtmp .= '-->';
echo $dtmp;
}
// Decide which chunk to return.
if ($value == '') {
// get chunk to return if $tv has no value
$falseChunk = isset( $falseChunk )? $modx -> getChunk( $falseChunk ): '';
return $falseChunk;
} else {
// get chunk to return if $tv has a value
if (isset( $trueChunk ))
{
$trueChunk = $modx -> getChunk( $trueChunk );
} else {
// Attempt to get the chunk with the same name as $tv
$trueChunk = $modx -> getChunk( $tv );
}
return $trueChunk;
}
?>
2. Create this Template Variable:
Name: testing
Input Type: Text
Assign to: all templates where you need to use ChunkIf
3. Now put this code on your template:
[[ChunkIf? &tv=`testing` &falseChunk=`[[GetField? &docid=`737` &field=`layoutStyle`]][[GetField? &docid=`737` &field=`globalcolor`]]` ]]
Important: this will only work
if you leave "testing" TV empty. If it doesn't work at first you may also need to save the page so MODX knows that the TV is empty.
