KnpSnappyBundle

Snappy is a PHP (5.3+) 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.

Installation

With composer, add:

{
    "require": {
        "knplabs/knp-snappy-bundle": "~1.4"
    }
}

Then enable it in your kernel:

// app/AppKernel.php
public function registerBundles()
{
    $bundles = array(
        //...
        new Knp\Bundle\SnappyBundle\KnpSnappyBundle(),
        //...

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.

# app/config/config.yml
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

# app/config/config.yml
knp_snappy:
    temporary_folder: %kernel.cache_dir%/snappy

You can also configure the timeout used by the generators with process_timeout:

# app/config/config.yml
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

$container->get('knp_snappy.image')->generate('http://www.google.fr', '/path/to/the/image.jpg');

Generate a pdf document from a URL

$container->get('knp_snappy.pdf')->generate('http://www.google.fr', '/path/to/the/file.pdf');

Generate a pdf document from multiple URLs

$container->get('knp_snappy.pdf')->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

$this->get('knp_snappy.pdf')->generateFromHtml(
    $this->renderView(
        'MyBundle:Foo:bar.html.twig',
        array(
            'some'  => $vars
        )
    ),
    '/path/to/the/file.pdf'
);

Render an image as response from a controller

$html = $this->renderView('MyBundle:Foo:bar.html.twig', array(
    'some'  => $vars
));


return new Response(
    $this->get('knp_snappy.image')->getOutputFromHtml($html),
    200,
    array(
        'Content-Type'          => 'image/jpg',
        'Content-Disposition'   => 'filename="image.jpg"'
    )
);

Render a pdf document as response from a controller

$html = $this->renderView('MyBundle:Foo:bar.html.twig', array(
    'some'  => $vars
));

return new Response(
    $this->get('knp_snappy.pdf')->getOutputFromHtml($html),
    200,
    array(
        'Content-Type'          => 'application/pdf',
        'Content-Disposition'   => 'attachment; filename="file.pdf"'
    )
);

Render a pdf document with a relative url inside like css files

$pageUrl = $this->generateUrl('homepage', array(), true); // use absolute path!

return new Response(
    $this->get('knp_snappy.pdf')->getOutput($pageUrl),
    200,
    array(
        'Content-Type'          => 'application/pdf',
        'Content-Disposition'   => 'attachment; filename="file.pdf"'
    )
);

Credits

SnappyBundle and Snappy are based on the awesome wkhtmltopdf. SnappyBundle has been developed by KnpLabs.

matudelatower/KnpSnappyBundle