Using the Ditto &save parameter

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209 Posts

pbowyer Reply #1, 15 years, 5 months ago

I’m trying to use the &save parameter which is supposed to assign Ditto to a template variable, but it errors with:

PHP error debug
Error: Object of class ditto could not be converted to string
Error type/ Nr.: - 4096
File: /var/www/foo/htdocs/manager/includes/document.parser.class.inc.php
Line: 733
Line 733 source: $content= str_replace($matches[0], $replace, $content);

According to the source code for Ditto, the placeholders available should be

[+ditto_object+]
[+ditto_resource+]

Google turns up nothing - is the feature still supported?

Thanks!

MAPLEDESIGN MODX development and MODX web design and custom development. Proud to serve UK and International clients!

209 Posts

Alik Reply #2, 15 years, 5 months ago

Hi,

&save parameter does not assign Ditto’s result to template variable, but sets a resource in the global namespace. I am frequently using this parameter and the correct scheme is as follows:

<?php
$params = array(
  'id' => 'unique', /* 1 */
  'parents' => '2,5',
  'tpl' => '@CODE:[+id+][+pagetitle+][+content+]',
  'save' => '3', // do not output anything, set placeholders only
  /* ... remaining parameters ... */
);
// run Ditto
$modx->runSnippet('Ditto', $params);
// fetch results
$placeholder = $modx->getPlaceholder('unique_ditto_resource'); /* 2 */
// now you can access results...
$placeholder[0]['pagetitle'] // <- contains pagetitle of first retrieved document
$placeholder[1]['content'] // <- content of second retrieved document
// ... for further processing
// ...
?>

Use print_r($placeholder) to see structure of returned array; also please notice unique id passed within $params /* 1 */ -> later /* 2 */ it is used as prefix while fetching resource saved by Ditto.

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209 Posts

pbowyer Reply #3, 15 years, 5 months ago

Ah thanks Alik, I was misunderstanding the parameter, thinking it was like Wayfinder’s &ph option.

MAPLEDESIGN MODX development and MODX web design and custom development. Proud to serve UK and International clients!

130 Posts

sbRyGuy Reply #4, 15 years, 3 months ago

How are you pulling these placeholders? Do you need to include a separate snippet? In the above code chunk, do you have to manually add those id variables?

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