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Package cakepdf
Short Description CakePHP plugin for creating and/or rendering Pdfs, several Pdf engines supported.
License MIT
Homepage http://github.com/friendsofcake/CakePdf
Informations about the package cakepdf
CakePdf plugin
Plugin containing CakePdf lib which will use a PDF engine to convert HTML to PDF.
Current engines:
- DomPdf (^0.8)
- Mpdf (^7.0)
- Tcpdf (^6.2)
- WkHtmlToPdf RECOMMENDED ENGINE
Requirements
- CakePHP 3.4+
- One of the following render engines: DomPdf, Mpdf, Tcpdf or wkhtmltopdf
- pdftk (optional) See: http://www.pdflabs.com/tools/pdftk-the-pdf-toolkit/
Installation
Using Composer:
CakePdf does not include any of the supported PDF engines, you need to install
the ones you intend to use yourself.
The recommend wkhtmltopdf engine can be downloaded from http://wkhtmltopdf.org/,
by default CakePdf expects the wkhtmltopdf binary to be located in /usr/bin/wkhtmltopdf.
If you are using wkhtmltopdf in Windows, remove any spaces in the path name. For example
use C:/Progra~1/wkhtmltopdf/bin/wkhtmltopdf.exe
DomPdf, Mpdf and Tcpdf can be installed via composer using on of the following commands:
Setup
In config/bootstrap.php
add:
or using CakePHP's console:
If you plan to use the PDF view functionality
that automatically renders and returns the PDF for sending it to the browser,
you should also register the pdf
extension in your config/routes.php
file,
either globally before the routes that should be affected:
or for a specific route scope:
Further setup information can be found in the usage section.
Configuration
Use Configure::write('CakePdf', $config);
or set Controller property $pdfConfig
(only when used with PdfView). You need to define at least $config['engine']
.
When using CakePdf directly you can also pass the config array to constructor.
The value for engine should have the Plugin.ClassName
format without the Engine suffix.
Configuration options:
- engine: Engine to be used (required), or an array of engine config options
- className: Engine class to use
- binary: Binary file to use (Only for wkhtmltopdf)
- cwd: current working directory (Only for wkhtmltopdf)
- options: Engine specific options. Currently used for following engine:
WkHtmlToPdfEngine
: The options are passed as CLI argumentsTexToPdfEngine
: The options are passed as CLI argumentsDomPdfEngine
: The options are passed to constructor ofDompdf
classMpdfEngine
: The options are passed to constructor ofMpdf
class
- crypto: Crypto engine to be used, or an array of crypto config options
- className: Crypto class to use
- binary: Binary file to use
- pageSize: Change the default size, defaults to A4
- orientation: Change the default orientation, defaults to potrait
- margin: Array or margins with the keys: bottom, left, right, top and their values
- title: Title of the document
- delay: A delay in milliseconds to wait before rendering the pdf
- windowStatus: The required window status before rendering the pdf
- encoding: Change the encoding, defaults to UTF-8
- download: Set to true to force a download, only when using PdfView
- filename: Filename for the document when using forced download
Example:
The engine
and crypto
config options can also be arrays with configuration
options for the relevant class. For example:
Usage
You can use CakePdf in two ways, read carefully which one you actually need. Many people mix both ways and don't get the expected results.
1: Render as PDF (including forced download) in the browser with PdfView
You can create PDF view and layout files for your controller actions and have
them automatically rendered. Place the view templates in a 'pdf' subdir, for
instance src/Template/Invoices/pdf/view.ctp
, layouts will be in
src/Template/Layout/pdf/default.ctp
.
Make sure your InvoicesController
class
loads the RequestHandler
component
and browse to http://localhost/invoices/view/1.pdf
Additionally you can map resources by adding Router::mapResources(['Invoices']);
to your routes file and you can access the same document at
http://localhost/invoices/1.pdf
.
In case you don't want to use the pdf
extension in your URLs, you can omit
registering it in your routes configuration. Then in your controller action
call RequestHandler::render()
to switch the view class and template paths.
2: Create PDF for email attachment, file storage etc.
You can use CakePdf lib to create raw PDF data with a view template.
The view file path would look like src/Template/Pdf/newsletter.ctp
.
Layout file path would be like src/Template/Layout/pdf/default.ctp
Note that layouts for both usage types are within same directory, but the view
templates use different file paths Optionally you can also write the raw data to
file.
Example:
Encryption
You can optionally encrypt the PDF with permissions
To use encryption you first need to select a crypto engine. Currently we support the following crypto engines:
- Pdftk
Usage
Add the following in your bootstrap.
Options in pdfConfig:
- protect: Set to true to enable encryption
- userPassword (optional): Set a password to open the PDF file
- ownerPassword (optional): Set the password to unlock the locked permissions
- one of the above must be present, either userPassword or ownerPassword
- permissions (optional): Define the permissions
Permissions:
By default, we deny all permissions.
To allow all permissions:
Set 'permission' to true
To allow specific permissions:
Set 'permissions' to an array with a combination of the following available permissions:
- degraded_print
- modify,
- assembly,
- copy_contents,
- screen_readers,
- annotate,
- fill_in
How to
Ensure css, images etc. are loaded in PDF
Use absolute URLs for static assets in your view templates for PDFs.
If you use HtmlHelper::image()
, or HtmlHelper::css()
make sure you have set fullBase
option to true
.
For example
Get header and footer on all pages
Here are a couple of CSS based solutions you can refer to for easily getting header footer on all PDF pages.
- https://ourcodeworld.com/articles/read/687/how-to-configure-a-header-and-footer-in-dompdf
- http://www.jessicaschillinger.us/2017/blog/print-repeating-header-browser/
Thanks
Many thanks to Kim Biesbjerg and Jelle Henkens for their contributions. Want your name here as well? Create a pull request for improvements/other PDF engines.