yii-snappy

This is a basic wrapper around Snappy implemented as Yii application component. Snappy is a PHP library that uses wkhtmltopdf and wkhtmltoimage to render HTML into PDF and various image formats.

Installation

Installation using Composer should be straightforward

% composer require dmitrivereshchagin/yii-snappy

To register components in your application add something like the following in configuration components section:

'pdf' => array(
    'class' => 'dmitrivereshchagin\\yii\\snappy\\PdfComponent',
    'binary' => '/usr/local/bin/wkhtmltopdf',
    'options' => array('orientation' => 'landscape'),
    'tempdir' => basename(__DIR__).'/runtime/pdf',
),
'image' => array(
    'class' => 'dmitrivereshchagin\\yii\\snappy\\ImageComponent',
    'binary' => '/usr/local/bin/wkhtmltoimage',
    'tempdir' => basename(__DIR__).'/runtime/image',
),

Specifying paths to binaries is mandatory. Optionally you can configure default command line arguments that can be overridden or adjusted later. It is also possible to set temporary directory for both components using snappyTempdir application parameter.

Usage

Use Yii::app()->pdf and Yii::app()->image to generate PDF documents and images respectively. These components provide access to methods declared by \Knp\Snappy\GeneratorInterface.

Here are some examples.

Generate image from an URL

Yii::app()->image->generate('http://example.com', '/path/to/image.jpg');

Generate PDF document from an URL

Yii::app()->pdf->generate('http://example.com', '/path/to/document.pdf');

Generate PDF document from multiple URLs

Yii::app()->pdf->generate(
    array('http://example.com', 'http://example.org'),
    '/path/to/document.pdf'
);

Generate PDF document from a view

Yii::app()->pdf->generateFromHtml(
    $this->render('view', array('name' => $value), $return = true),
    '/path/to/document.pdf'
);

Generate PDF document as response from controller

$html = $this->render('view', array('name' => $value), $return = true);

Yii::app()->request->sendFile(
    'document.pdf',
    Yii::app()->pdf->getOutputFromHtml($html)
);

Generate PDF document with relative URLs inside

$url = Yii::app()->createAbsoluteUrl('controller/action');

Yii::app()->request->sendFile(
    'document.pdf',
    Yii::app()->pdf->getOutput($url)
);

Credits

This code uses Snappy library. Snappy has been originally developed by KnpLabs team.