knplabs / knp-snappy-bundle
Easily create PDF and images in Symfony by converting Twig/HTML templates.
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Type:symfony-bundle
Requires
- php: >=8.1
- knplabs/knp-snappy: ^1.4.3
- symfony/framework-bundle: ^5.1|^6.0|^7.0
Requires (Dev)
- phpunit/phpunit: ^8.5
- symfony/yaml: ^5.1|^6.0|^7.0
README
Snappy is a PHP wrapper for the wkhtmltopdf conversion utility. It allows you to generate either pdf or image files from your html documents, using the webkit engine.
The KnpSnappyBundle provides a simple integration for your Symfony project.
Limitations
If you use JavaScript to render your pages, you may encounter some issues because of wkhtmltopdf not being fully compatible with ES6 apis. The only way to solve this issue is to provide polyfills that fix the gaps between modern ES6 apis and the wkhtmltopdf rendering engine.
Installation
With composer, require:
composer require knplabs/knp-snappy-bundle
If you are not using Flex, enable it in your kernel :
// config/bundles.php <?php return [ //... Knp\Bundle\SnappyBundle\KnpSnappyBundle::class => ['all' => true], //... ];
Configuration
If you need to change the binaries, change the instance options or even disable one or both services, you can do it through the configuration.
# config/packages/knp_snappy.yaml knp_snappy: pdf: enabled: true binary: /usr/local/bin/wkhtmltopdf #"\"C:\\Program Files\\wkhtmltopdf\\bin\\wkhtmltopdf.exe\"" for Windows users options: [] image: enabled: true binary: /usr/local/bin/wkhtmltoimage #"\"C:\\Program Files\\wkhtmltopdf\\bin\\wkhtmltoimage.exe\"" for Windows users options: []
If you want to change temporary folder which is sys_get_temp_dir()
by default, you can use
# config/packages/knp_snappy.yaml knp_snappy: temporary_folder: "%kernel.cache_dir%/snappy"
You can also configure the timeout used by the generators with process_timeout
:
# config/packages/knp_snappy.yaml knp_snappy: process_timeout: 20 # In seconds
Usage
The bundle registers two services:
- the
knp_snappy.image
service allows you to generate images; - the
knp_snappy.pdf
service allows you to generate pdf files.
Generate an image from a URL
// @var Knp\Snappy\Image $knpSnappyImage->generate('http://www.google.fr', '/path/to/the/image.jpg');
Generate a pdf document from a URL
// @var Knp\Snappy\Pdf $knpSnappyPdf->generate('http://www.google.fr', '/path/to/the/file.pdf');
Generate a pdf document from multiple URLs
// @var Knp\Snappy\Pdf $knpSnappyPdf->generate(array('http://www.google.fr', 'http://www.knplabs.com', 'http://www.google.com'), '/path/to/the/file.pdf');
Generate a pdf document from a twig view
// @var Knp\Snappy\Pdf $knpSnappyPdf->generateFromHtml( $this->renderView( 'MyBundle:Foo:bar.html.twig', array( 'some' => $vars ) ), '/path/to/the/file.pdf' );
Render an image as response from a controller
use Knp\Bundle\SnappyBundle\Snappy\Response\JpegResponse; use Symfony\Bundle\FrameworkBundle\Controller\AbstractController; class SomeController extends AbstractController { public function imageAction(Knp\Snappy\Image $knpSnappyImage) { $html = $this->renderView('MyBundle:Foo:bar.html.twig', array( 'some' => $vars )); return new JpegResponse( $knpSnappyImage->getOutputFromHtml($html), 'image.jpg' ); } }
Render a pdf document as response from a controller
use Knp\Bundle\SnappyBundle\Snappy\Response\PdfResponse; use Symfony\Bundle\FrameworkBundle\Controller\AbstractController; class SomeController extends AbstractController { public function pdfAction(Knp\Snappy\Pdf $knpSnappyPdf) { $html = $this->renderView('MyBundle:Foo:bar.html.twig', array( 'some' => $vars )); return new PdfResponse( $knpSnappyPdf->getOutputFromHtml($html), 'file.pdf' ); } }
Render a pdf document with a relative url inside like css files
use Knp\Bundle\SnappyBundle\Snappy\Response\PdfResponse; use Symfony\Bundle\FrameworkBundle\Controller\AbstractController; class SomeController extends AbstractController { public function pdfAction(Knp\Snappy\Pdf $knpSnappyPdf) { $pageUrl = $this->generateUrl('homepage', array(), true); // use absolute path! return new PdfResponse( $knpSnappyPdf->getOutput($pageUrl), 'file.pdf' ); } }
Maintainers
KNPLabs is looking for maintainers (see why).
If you are interested, feel free to open a PR to ask to be added as a maintainer.
We’ll be glad to hear from you :)
Credits
SnappyBundle and Snappy are based on the awesome wkhtmltopdf. SnappyBundle has been developed by KnpLabs.