heyday/silverstripe-wkhtml

Provides Wkhtml functionality in SilverStripe

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Type:silverstripe-vendormodule

1.1.1 2017-07-13 05:15 UTC

README

Build Status

This module provides a SilverStripe-centric wrapper for Snappy and wkhtml.

A SilverStripe 3 version is available as ^2.x, and a SilverStripe 2.4 version is available as ^1.x.

Requirements

Installation

$ composer require "heyday/silverstripe-wkhtml:^3"

How to use

Four things are required to generate a pdf or an image:

  • Knp\Snappy\GeneratorInterface The wrapper for wkhtmltopdf or wkhtmltoimage
  • Heyday\SilverStripe\WkHtml\Input\InputInterface to provide the html
  • Heyday\SilverStripe\WkHtml\Output\OutputInterface output the pdf or image in different ways
  • Heyday\SilverStripe\WkHtml\Generator to glue everything together

Available Inputs

  • Request (generates content from a request)
  • TextString (content is specified by a string)
  • Template (generates content from a SilverStripe template)
  • Url (generates content from a GET request to a Url)
  • Viewer (generates content from an SSViewer instance)

Available Outputs

  • Browser (outputs to the browser)
  • File (outputs to a file)
  • RandomFile (outputs to a random filename)
  • TextString (outputs to a string)

Available Generators

  • Pdf
  • Image

Examples

Full example (from a controller action)

SilverStripe\Core\Injector\Injector:
  # Create PDF generator as an injector service
  # This allows you to specify the binary path once and have it set up
  # automatically by getting the service from the injector.
  Knp\Snappy\Pdf:
    constructor:
      - '/bin/wkhtmltopdf' # Path to your WKTHMLTOPDF binary. Use '`SOME_ENV_VAR`' to define the binary path in .env
use Heyday\SilverStripe\WkHtml;
use SilverStripe\Core\Injector\Injector;

$generator = WkHtml\Generator::create(
    // Use Injector->get(Pdf::class) if you don't need to modify options
    // Use Injector->create() to create a transient service for modifications (e.g. setOption)
    // Using Injector->get() and making changes will cause changes to be made for all uses of get(Pdf::class) for the entire request
    Injector::inst()->create(\Knp\Snappy\Pdf::class),
    WkHtml\Input\Url::create('/'),
    WkHtml\Output\Browser::create('test.pdf', 'application/pdf')
);
return $generator->process();

Inputs

Request

\Heyday\SilverStripe\WkHtml\Input\Request::create(
    // Controller::curr()->getRequest() is also an option
    Injector::inst()->get(\SilverStripe\Control\HTTPRequest::class)
);
\Heyday\SilverStripe\WkHtml\Input\Request::create(
    Injector::inst()->get(\SilverStripe\Control\HTTPRequest::class),
    new Session([
        'arg' => 'value',
    ])
);

String

$html = <<<HTML
<h1>Title</h1>
HTML;
\Heyday\SilverStripe\WkHtml\Input\TextString::create($html);

Template

\Heyday\SilverStripe\WkHtml\Input\Template::create('MyTemplate');

\Heyday\SilverStripe\WkHtml\Input\Template::create(
    'MyTemplate',
    [
        'Var' => 'Hello',
    ]
);

\Heyday\SilverStripe\WkHtml\Input\Template::create(
    'MyTemplate',
    ArrayData::create([
        'Var' => 'Hello',
    ])
);

\Heyday\SilverStripe\WkHtml\Input\Template::create(
    '$Var World',
    ArrayData::create([
        'Var' => 'Hello',
    ]),
    true
);

Viewer

\Heyday\SilverStripe\WkHtml\Input\Viewer::create(
    SSViewer::create([
        'Template',
    ]),
    ArrayData::create([
        'Var' => 'Hello',
    ])
);

Url

\Heyday\SilverStripe\WkHtml\Input\Url::create('/');

\Heyday\SilverStripe\WkHtml\Input\Url::create('http://google.co.nz/');

Outputs

Browser

\Heyday\SilverStripe\WkHtml\Output\Browser::create('test.pdf', 'application/pdf'); // Force download

\Heyday\SilverStripe\WkHtml\Output\Browser::create('test.pdf', 'application/pdf', true); // Embeds

File

\Heyday\SilverStripe\WkHtml\Output\File::create(BASE_PATH . '/test.pdf');

\Heyday\SilverStripe\WkHtml\Output\File::create(BASE_PATH . '/test.pdf', true); // Overwrite

Random File

\Heyday\SilverStripe\WkHtml\Output\RandomFile::create(BASE_PATH);

String

\Heyday\SilverStripe\WkHtml\Output\TextString::create();

##Unit Testing

$ composer install
$ phpunit

License

This project is licensed under an MIT license