Generation de PDF Laravel / wkhtmltopdf API

Pdf.php

<?php namespace Models;
use GuzzleHttp\Client;
/**
 * Geenration d'un pdf
 *
 * Class Pdf
 * @package Models
 */
class Pdf
{
    /**
     * @var URL de wkhtml2pdf
     */
    protected $url;
    /**
     * @var string
     */
    protected $content;
    /**
     * @var string
     */
    protected $filename;
    /**
     * Pdf constructor.
     */
    public function __construct($url = null)
    {
        $this->url = is_null($url) ? env('WKHTML2PDF_URL', 'http://pdf') : $url;
    }
    /**
     * @param $view
     * @param array $params
     */
    static public function fromView($view, $params = [])
    {
        $class = new static();
        $class->setContent(view($view, $params));
        return $class;
    }
    /**
     * Return content
     *
     * @return string
     */
    public function getContent()
    {
        return $this->content;
    }
    /**
     * Setter for $content
     *
     * @param $content
     * @return $this
     */
    public function setContent($content)
    {
        $this->content = $content;
        return $this;
    }
    /**
     * Set filename
     *
     * @param $filename
     * @return $this
     */
    public function setFilename($filename)
    {
        $this->filename = $filename;
        return $this;
    }
    /**
     * Renvoie une reponse laravel
     *
     * @return \Illuminate\Http\Response
     */
    public function show()
    {
        return \response()->make($this->request(), 200, [
            'Content-Type' => 'application/pdf',
            'Content-Disposition' => 'inline; filename="' . $this->filename . '"'
        ]);
    }
    /**
     * Requete sur l'api de wkhtml
     *
     *
     * @return string
     */
    protected function request()
    {
        // request
        $client = new Client();
        $response = $client->request('POST', $this->url, [
            'headers' => ['Content-Type' => 'application/json'],
            'json' => ['contents' => base64_encode($this->content)]
        ]);
        return $response->getBody()->getContents();
    }
    /**
     * Return raw data PDF
     *
     * @return string
     */
    public function raw()
    {
        return $this->request();
    }
}