How to Bundle Prebuilt Layouts in Page Builder 2.5+?

The old documentation for functions.php still works:

function mytheme_prebuilt_layouts($layouts){ 
    ...[see code below]
    return $layouts;
    }

add_filter('siteorigin_panels_prebuilt_layouts','mytheme_prebuilt_layouts');

Unfortunately you need to decode the json and extract the array from the resulting object:

function mytheme_prebuilt_layouts($layouts){

    $layouts['<name>'] = array(
        'name' => __('Two Column', 'theme'),    // Required
        'description' => __('Two Column Template', 'theme')    // Optional
    );
    $arr = json_decode('<exported json here>');
    $layouts['<nane>']['widgets'] = $arr->widgets;
    
 return $layouts;
}
add_filter('siteorigin_panels_prebuilt_layouts','mytheme_prebuilt_layouts');

NB: this is just an example, you’d probably want to decode the json once offline and insert the array instead.

@Andrew Thanks, that works.

For anyone copy/pasting @andrew’s code:

the layouts directory should go at the top level of your themes directory, not in your theme
Change the path set in $layout_dir in function_layouts.php to move it into your theme dir.