Adding to the export asset store

Hi @datawench,

If the relevant asset represents a file entity, you can load a file entity and export it with

$embed_entities[] = $this->exporter->doExportToArray($file);

then simply populate the field value with new embedded entities, so in results it looks like this.

$value = $event->getFieldValue();
$embed_entities = [];

foreach ($value as &$item) {
  // Find and fetch file from the text $item['value'].
  ...
  
  // Export file.
  $embed_entities[] = $this->exporter->doExportToArray($file);

  foreach ($embed_entities as $embed_entity) {
    $item['embed_entities'][] = $embed_entity;
  }
}

$event->setFieldValue($value);

If it's not a file entity, then pass file path to the private storage e.g.

$assets = $this->privateTempStore->get('export.assets') ?? [];
if (!in_array($filepath, $assets, TRUE)) {
  $assets[] = $filepath;
  $this->privateTempStore->set('export.assets', $assets);
}

where $this->privateTempStore is $container->get('single_content_sync.store')

The import will automatically handle it.

Beautiful. Thank you!