ACF: Indexing files from File fields

That function does not index the PDF file name. It indexes the PDF contents, if you have Relevanssi Premium.

Instead of

$content .= ' ' . get_post_meta( $file['ID'], '_relevanssi_pdf_content', true );

you can try

$content .= ' ' . get_the_title( $file['ID'] );

This should fetch the attachment post title and include that in the post.

But I want it to search by file name: file.pdf

Then replace that line with something that fetches the file name based on the file ID. I don’t know what that is, offhand, but I’m sure ACF support can help you out with that.

I don’t have support because I have the free plugin

Try the ACF forums. I’m sure someone there knows.

This is the solution:

add_filter( 'relevanssi_content_to_index', 'rlv_get_acf_file', 10, 2 );
add_filter( 'relevanssi_excerpt_content', 'rlv_get_acf_file', 10, 2 );

function rlv_get_acf_file( $content, $_post ) {
    $file = get_field( 'pdf_file', $_post->ID );
    if ( is_array( $file ) && isset( $file['ID'] ) ) {
        $content .= ' ' . $file["filename"];
    }
    return $content;
}

Do you know how to make relevanssi also look for the filename of the links in the page content?

• This reply was modified 1 year, 10 months ago by Alberto.
• This reply was modified 1 year, 10 months ago by Alberto.
• This reply was modified 1 year, 10 months ago by Alberto.

Here’s how you could approach it:

add_filter( 'relevanssi_content_to_index', function( $content ) {
  preg_match_all('/<a\s[^>]*href\s*=\s*[\'"]([^\'"]+)[\'"][^>]*>/', $content, $matches);
  $href_attributes = $matches[1];
  foreach ($href_attributes as $href) {
    if ( str_ends_with( $href, '.pdf' ) ) {
      $content .= ' ' . basename( parse_url( $href, PHP_URL_PATH ) );
    }
  }
  return $content;
} );

This would index the file names from all the links to PDF files from the post content. I haven’t tested this code, but it’s mostly from ChatGPT which is pretty good with stuff like this.