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Append attached PDF content to 'parent' post during indexing in SearchWP
<?php
// @link https://searchwp.com/documentation/knowledge-base/append-document-content-to-parent-post-content/
// Retrieve child PDF content and add as 'extra' data to a SearchWP Entry.
add_filter( 'searchwp\entry\data', function( $data, \SearchWP\Entry $entry ) {
// Convert the SearchWP Entry into it's native object type.
$entry = $entry->native();
// We only want to consider WP_Post objects.
if ( ! $entry instanceof \WP_Post ) {
return $data;
}
// Retrieve PDFs that have been uploaded to this Entry.
$pdfs = get_posts( [
'post_type' => 'attachment',
'post_mime_type' => 'application/pdf',
'post_status' => 'inherit',
'nopaging' => true,
'post_parent' => $entry->ID,
] );
if ( empty( $pdfs ) ) {
return $data;
}
// Retrieve PDF content for PDFs and store as extra data.
$data['meta'][ 'searchwp_child_pdf_content' ] = array_map( function( $pdf ) {
return \SearchWP\Document::get_content( $pdf );
}, $pdfs );
return $data;
}, 20, 2 );
// Add "Attached PDF Content" as available option to SearchWP Source Attributes.
add_filter( 'searchwp\source\attribute\options', function( $keys, $args ) {
if ( $args['attribute'] !== 'meta' ) {
return $keys;
}
// This key is the same as the one used in the searchwp\entry\data hook above, they must be the same.
$pdf_content_key = 'searchwp_child_pdf_content';
// Add "Attached PDF Content" Option if it does not exist already.
if ( ! in_array(
$pdf_content_key,
array_map( function( $option ) { return $option->get_value(); }, $keys )
) ) {
$keys[] = new \SearchWP\Option( $pdf_content_key, 'Attached PDF Content' );
}
return $keys;
}, 20, 2 );
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