building php documents with cakepdf - cakefest 2012
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BUILDING PHP DOCUMENTS WITH CAKEPDF
CakeFest Manchester, 2012
ABOUT ME
• Jelle Henkens
• LemonBE on IRC, @lemonit on Twitter
• Belgian in the UK
• Lead Developer at Geneo Software
• CakePHP Core Team Developer
• Founder of followmy.tv
WHAT IS CAKEPDF
• Generate PDF documents from HTML
• Easily pick which library to render the PDF
• PDF Encryption
• Layouts, views, helpers and more
• Use your own encryption / render engine
WHY IT WAS BUILT• Massive differences in API between pdf libraries
// Using DomPdf
require_once("dompdf_config.inc.php");
$html = '<html><body>'. '<p>Put your html here.</p>'. '</body></html>';
$dompdf = new DOMPDF();$dompdf->set_paper('A4', 'landscape');$dompdf->$dompdf->load_html($html);$dompdf->render();$pdfData = $dompdf->output();
// Tcpdf example
require_once('config/lang/eng.php');require_once('tcpdf.php');
$html = '<html><body>'. '<p>Put your html here.</p>'. '</body></html>';
$tcpdf = new TCPDF('portrait', 'mm', 'A4');$tcpdf->AddPage();$tcpdf->writeHTML($html);$pdfData = $tcpdf->Output('', 'S');
WHY IT WAS BUILT• And now with CakePdf// Using DomPdf
App::uses('CakePdf', 'CakePdf.Pdf');
$html = '<html><body>'. '<p>Put your html here.</p>'. '</body></html>';
$cakePdf = new CakePdf(array( 'engine' => 'CakePdf.DomPdf', 'orientation' => 'portrait', 'pageSize' => 'A4'));
$pdfData = $cakePdf->output($html);
// Tcpdf example
App::uses('CakePdf', 'CakePdf.Pdf');
$html = '<html><body>'. '<p>Put your html here.</p>'. '</body></html>';
$cakePdf = new CakePdf(array( 'engine' => 'CakePdf.Tcpdf', 'orientation' => 'portrait', 'pageSize' => 'A4'));
$pdfData = $cakePdf->output($html);
BUILT IN RENDER ENGINESWkHtmlToPdf stable
External BinaryUses WebKit
DomPdf alpha PHP Based
Mpdf alpha PHP Based
Tcpdf alpha PHP Based
Very Nice!
CONFIGURATION
CakePlugin::load('CakePdf', array( 'bootstrap' => true, 'routes' => true));
Add in Config/bootstrap.php
Setup
class AppController extends Controller { public $components = array('RequestHandler');}
Needs RequestHandlerComponent
CONFIGURATION
CakePlugin::load('CakePdf', array( 'bootstrap' => true));
Config/bootstrap.php
Special case for CakePHP 2.1.x
Router::parseExtensions('pdf');
Config/routes.php
CONFIGURATION
// Config/bootstrap.phpConfigure::write('CakePdf', array( 'engine' => 'CakePdf.WkHtmlToPdf', 'pageSize' => 'A4', 'orientation' => 'portrait'));
Global settingsSettings
public function view($id) { $this->pdfConfig = array( 'orientation' => 'landscape', 'download' => true, 'filename' => 'invoice-2005.pdf' ); .. Rest of action logic ..}
Inside the controller
TO VIEW OR NOT TO VIEW
• Generating PDF files with the .pdf extension in the URL• Viewing PDF documents in the browser
• Download to disk
• Smaller files
• Stand-alone to generate raw PDF data• Email attachments
• Offline processing
• Larger files
REQUESTHANDLER FLOW
• Layout file App/View/Layout/pdf/default.ctp
• View file App/View/Orders/pdf/invoice.ctp
• All the CakePHP goodies to your disposal
• Helpers
• Blocks
• Elements
View in browser or download to disk
STAND-ALONE FLOWApp::uses('CakePdf', 'CakePdf.Pdf');
$CakePdf = new CakePdf(array( 'engine' => 'CakePdf.Tcpdf', 'pageSize' => 'A5', 'orientation' => 'landscape', 'margin' => 10));
$html = '<html><head></head><body><p>CakeFest is the best</p></body></html>';
$rawPdfData = $CakePdf->output($html);
ENCRYPTING PDF FILES
• Protect against viewing, printing, editing and more
• pdftk binary from PDFLabs
• 128 bit encryption
• Second pass encryption
• Encrypt existing PDF documents
PASSWORD TYPES
• Owner password
• Unlock protected permissions
• Cannot be the same as the user password
• User password
• Will prompt before opening the PDF Document
• Cannot exist without an owner password
CRYPTO CONFIGURATION
//Default configurationConfigure::write('CakePdf', array( 'engine' => 'CakePdf.WkHtmlToPdf', 'crypto' => 'CakePdf.Pdftk'));
Add in Config/bootstrap.php
USING ENCRYPTING
//Action configurationpublic function view($id) { $this->pdfConfig = array( 'orientation' => 'landscape', 'protect' => true, 'userPassword' => 'foo', 'ownerPassword' => 'bar', 'permissions' => array( 'print' ) ); .. Rest of action logic ..}
TECHNICAL DEMO
THANKS
Jelle Henkens - @lemonit - jelle.henkens@gmail.com
http://github.com/ceeram/CakePdf
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