apply_filters( 'relevanssi_post_to_excerpt', object $_post );
Filters the post object before Relevanssi creates an excerpt from it.
Parameters
$_post
(object) The post object. Always equivalent to WP_Post, but it is not always precisely a WP_Post object.
More information
When Relevanssi creates an excerpt from a post in relevanssi_do_excerpt(), the first step is to filter the post object with this filter hook. After that, Relevanssi filters and tokenizes the search query. Relevanssi then filters and processes the post content and generates the excerpt.
This filter offers the first chance to manipulate the proceedings by changing the post object somehow. If you wish to modify the post content, it’s probably better to use relevanssi_pre_excerpt_content (which runs before the_content filters are applied) or relevanssi_excerpt_content (which runs after the_content filters). But if you, for example, use hand-built excerpts as source material for Relevanssi-generated excerpts, there’s no filter to modify them, so this filter comes in handy:
// Modifies excerpts so that all strawberries become raspberries.
add_filter( 'relevanssi_post_to_excerpt', 'rlv_modify_excerpt' );
function rlv_modify_excerpt( $_post ) {
$_post->post_excerpt = str_replace( 'strawberry', 'raspberry', $_post->post_excerpt );
return $_post;
}