ACF Flexible Field Content in Relevanssi

acf-flexible-to-relevanssi.php

<?php

//ADD Flexible content to Relevanssi
add_filter('relevanssi_excerpt_content', __NAMESPACE__ . '\\custom_fields_to_excerpts', 10, 3);
function custom_fields_to_excerpts($content, $post, $query) {

$sections = get_field('sections', $post->ID);
if ($sections) {
	foreach ($sections as $section) {
		if ($section['acf_fc_layout'] == 'content_editor') {
			$content .= $section['content'];
		}
	}
}

return $content;
}

?>