MODx Revolution Integration Fatal Error

rsgca

I'd like to access Zenphoto's template functions within a MODx snippet as per the Zenphoto as a 'plugin' user guide article. But I'm running into some trouble with MODx Revolution 2.0.7-pl and Zenphoto 1.4.0.2 (installed in the `/zenphoto/` directory)

I've attempted adding the suggested constant definitions and a require_once statement for the Zenphoto `template-functions.php` file to a chunk which is then included in the template.

The chunk:
`
define('WEBPATH', 'zenphoto');
define('ZENFOLDER', 'zp-core');
require_once(WEBPATH . "/" . ZENFOLDER . "/template-functions.php");
`
The snippet:
`
$randomImage = getRandomImages();
echo 'getSizedImage(getOption('image_size')) . '" alt="random image - ' . $randomImage->getTitle() . '" />';
`
This attempt returns the following (anonymised) error:
`Fatal error: Call to a member function getSizedImage() on a non-object in /home/username/domain.ca/core/cache/elements/modsnippet/46.include.cache.php on line 9`

The same code in a standalone PHP file returns a random image successfully.

Someone found a solution for Evo back in 2008 by adding the constant definitions and require statement in the MODx `index.php` file. I understand this isn't a great solution but I attempted it anyway with expectedly no success.

Does anyone have any suggestions on how to get this working?

sbillard

Errors like this are most likely caused by the zenphoto "include" being done from within a function. This has the effect of making Zenphoto global variables become
"local" to the function.

If you can figure out which varialbles this is happening to you can declare them global in your code snippit.

rsgca

Thank you for the response, sbillard, though I am uncertain how to implement your suggestion.

Are the variables to which you refer located in the template-functions.php file?

sbillard

Implementing this is not an easy task because we do not know specifically what variables are impacted. I would make a guess that in this particular case it is the `$_zp_supported_images` variable, but that is just a guess.

The best thing would be to figure out how to launch Zenphoto from not within a function call. (This is how Zenphoto does launch its plugins so that they do not suffer this issue.)

rsgca

For interested readers, I have posted the same question at the MODx forums.

And for clarification to those familiar with MODx, the suggestion that I used a chunk was a typo. I have in fact used a snippet for the PHP code.