Relevanssi Premium has tools for pinning posts for specific queries and all searches where the post appears, but what if you want to pin a post for all searches? That’s also possible but requires a bit of code.
Pin the post for all searches and add this function to your site:
add_filter( 'relevanssi_hits_filter', function( $hits ) {
$pinned_post_id = 1234;
if ( ! in_array( $pinned_post_id, array_column( $hits[0], 'ID' ), false ) ) {
$pinned_post = get_post( $pinned_post_id );
array_unshift( $hits[0], $pinned_post );
}
return $hits;
}, 11 );Replace 1234 with the ID of the post you want to pin. This function runs on the relevanssi_hits_filter hook that can be used to modify the search results. The function checks if the post appears in the results; if it doesn’t, it fetches the post object and adds it to the top.