Data-options not in object context

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1

I’m attempting to create a custom content type (podcast) and then add fields from a custom plugin (biblref). In the podcast.yaml file, when I use:
'@data-options: '\Grav\Plugin\BiblerefPlugin::getBookOptions'
I get the following error:

Using $this when not in object context

In my bibleref.php file, I’m attempting the following:
public function getBookOptions() {
...
$book_list = __DIR__ . '/' . $this->config->get('plugins.bibleref.book_list');

How do I reference the configuration yaml properly?

Thanks in advance

2

I was originally putting the new field definition in my theme, but moving it out to the bibleref blueprints still produced the same error.

3

The getBookOptions() method needs to be static, and as such you can’t use $this, you would have to use $static.

4

Thanks for the reply. I ended up moving my file to the DATA_DIR ahead of time and referenced it there.