17 use Magento\Sales\Model\ResourceModel\Order\Invoice\CollectionFactory;
    23 class Pdfinvoices extends \Magento\Sales\Controller\Adminhtml\Order\PdfDocumentsMassAction
    70         parent::__construct($context, 
$filter);
    82         $invoicesCollection = $this->collectionFactory->create()->setOrderFilter([
'in' => 
$collection->getAllIds()]);
    83         if (!$invoicesCollection->getSize()) {
    84             $this->messageManager->addErrorMessage(
__(
'There are no printable documents related to selected orders.'));
    87         $pdf = $this->pdfInvoice->getPdf($invoicesCollection->getItems());
    88         $fileContent = [
'type' => 
'string', 
'value' => $pdf->render(), 
'rm' => 
true];
    90         return $this->fileFactory->create(
    91             sprintf(
'invoice%s.pdf', $this->dateTime->date(
'Y-m-d_H-i-s')),
    93             DirectoryList::VAR_DIR,
 
massAction(AbstractCollection $collection)
__construct(Context $context, Filter $filter, CollectionFactory $collectionFactory, DateTime $dateTime, FileFactory $fileFactory, Invoice $pdfInvoice)