Perils

Thank You very Much Mikko!

Hi Mikko! Thanks for the answer.
No, unfortunately if I start again with the “index unindexed posts” it immediately slows down.
At the moment I’m using the free version. However, I can consider using the premium version if it solves the problem. Research is fine. It is only indexing which is too slow.

OK SOLVED!

add_filter( 'pods_api_pre_save_pod_item_fascicolo', 'slug_set_title', 10, 2);
function slug_set_title($pieces) {
	//check if is new item, if not return $pieces without making any changes

	//make sure that all three fields are active
	$fields = array( 'post_title', 'post_name', 'fascicolo_relazione_rivista',  'fascicolo_anno_solare', 'fascicolo_numero' );
	foreach( $fields as $field ) {
		if ( ! isset( $pieces[ 'fields_active' ][ $field ] ) ) {
			array_push ($pieces[ 'fields_active' ], $field );
		}
	}
	//set variables for fields empty first for saftey's sake
	$titolo_rivista = $id_rivista = $fascicolo_anno_solare = $fascicolo_numero = '';
	
	//get value of "fascicolo_relazione_rivista" if possible
	if ( isset( $pieces[ 'fields' ][ 'fascicolo_relazione_rivista' ] ) && isset( $pieces[ 'fields'][ 'fascicolo_relazione_rivista' ][ 'value' ] ) && is_string( $pieces[ 'fields' ][ 'fascicolo_relazione_rivista' ][ 'value' ] ) ) {
		$id_rivista = $pieces[ 'fields' ][ 'fascicolo_relazione_rivista' ][ 'value' ];
	}
	$titolo_rivista = get_the_title( $id_rivista );

	//get value of "fascicolo_anno_solare" if possible
	if ( isset( $pieces[ 'fields' ][ 'fascicolo_anno_solare' ] ) && isset( $pieces[ 'fields'][ 'fascicolo_anno_solare' ][ 'value' ] ) && is_string( $pieces[ 'fields' ][ 'fascicolo_anno_solare' ][ 'value' ] ) ) {
		$fascicolo_anno_solare = $pieces[ 'fields' ][ 'fascicolo_anno_solare' ][ 'value' ];
	}
	//get value of "fascicolo_numero" if possible
	if ( isset( $pieces[ 'fields' ][ 'fascicolo_numero' ] ) && isset( $pieces[ 'fields'][ 'fascicolo_numero' ][ 'value' ] ) && is_string( $pieces[ 'fields' ][ 'fascicolo_numero' ][ 'value' ] ) ) {
		$fascicolo_numero = $pieces[ 'fields' ][ 'fascicolo_numero' ][ 'value' ];
	}
	//set post title using $fascicolo_anno_solare and $fascicolo_numero
	$pieces[ 'object_fields' ][ 'post_title' ][ 'value' ] = $titolo_rivista . ' and ' . $fascicolo_anno_solare . ' and ' . $fascicolo_numero;
	$pieces[ 'object_fields' ][ 'post_name' ][ 'value' ] = sanitize_title($titolo_rivista . ' and ' . $fascicolo_anno_solare . ' and ' . $fascicolo_numero);
	//return $pieces to save
	return $pieces;
}