Timber acf file wrapper function

timber_acf_file.php

<?php

class BasePost extends TimberPost
{

	public function get_file($key) {
		$id = $this->get_field($key);
		$file_path = get_attached_file( $id );
		$file = new SplFileInfo($file_path);
		try {
			$data = [
				'url' => wp_get_attachment_url( $id ),
				'extension' => $file->getExtension(),
				'size' => $this->format_bytes($file->getSize()),
				'file_info' => $file,
			];
		} catch(Exception $e) {
			$data = null;
		}
		

		return $data;
	}

	// @link from http://stackoverflow.com/questions/2510434/format-bytes-to-kilobytes-megabytes-gigabytes
	function format_bytes($bytes, $precision = 2) { 
		$units = array('B', 'KB', 'MB', 'GB', 'TB'); 

		$bytes = max($bytes, 0); 
		$pow = floor(($bytes ? log($bytes) : 0) / log(1024)); 
		$pow = min($pow, count($units) - 1);
		$bytes /= (1 << (10 * $pow));

		return round($bytes, $precision) . ' ' . $units[$pow]; 
	}	
	
}