how to get phalcon view render for wkhtmltopdf?

Question

I'm using Phalcon Framework in my project. I have generated reports page and I want to convert it to pdf and download. After lots of googling I get wkhtmltopdf, but it's converting only html file to pdf. I have phtml file. Can Phalcon render the view as html-strings or any other way I can convert?

Here is my code:

$pdf = new mikehaertl\wkhtmlto\Pdf(APP_PATH . '\\views\\views\\sales\\salesreports.phtml');
if (!$pdf->send()) {
   throw new Exception('Could not create PDF: ' . $pdf->getError());
}

Answer 1

Phalcon rendering a template into variable as html string:

$view = new \Phalcon\Mvc\View\Simple();
$view->setViewsDir(APP_PATH . '\app\views\views\sales\');
$optionalParams = [
    'var1' => 123,
    'var2' => 345,
];
// DO NOT put .phtml extension in the template name
$html = $view->render('salesreports', $optionalParams); 

I'm, not familiar with wkhtmlto\Pdf library, but judging from the docs should look something like this:

use mikehaertl\wkhtmlto\Pdf;

$pdf = new Pdf;
$pdf->addPage($html);
$pdf->send();