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      wkhtmltopdf

      Grails wkhtmltopdf plugin

      Owner: rlovtangen | 1.0.0.RC9 | May 7, 2018 | Package | Issues | Source | License: Apache-2.0

      9
      
      dependencies {
          compile 'org.grails.plugins:wkhtmltopdf:1.0.0.RC9'
      }
      
                  

      This plugin provides an easy integration of wkhtmltopdf, a command line tool to render HTML into PDF.

      This enables you to write a Grails View in HTML as usual, but render as PDF.

      Wkhtmltopdf

      wkhtmltopdf and wkhtmltoimage are open source (LGPLv3) command line tools to render HTML into PDF and various image formats using the Qt WebKit rendering engine. These run entirely "headless" and do not require a display or display service.
      http://wkhtmltopdf.org/

      Installation

      In addition to adding the plugin as dependency to your Grails project, the wkhtmltopdf binary must be installed. See instructions at http://wkhtmltopdf.org/ or install using your package manager (apt-get, yum, brew etc)

      Finally make sure the following command works as expected:

      wkhtmltopdf www.google.com test.pdf

      Configuration

      Put the following line into your application.groovy (or corresponding property in application.yml) and adjust the path to your wkhtmltopdf binary (which wkhtmltopdf)

      grails.plugin.wkhtmltopdf.binary = "/usr/local/bin/wkhtmltopdf"

      Typical paths:

      OS Path

      OS X

      /usr/local/bin/wkhtmltopdf

      Linux

      /usr/bin/wkhtmltopdf

      Windows

      C:/local/wkhtmltopdf/wkhtmltopdf.exe

      Supported Grails versions

      Grails 3.0.0 - 3.0.2

      Not supported

      Grails 3.0.3

      Add the pdf mime type to grails.mime.types in application.yml

      pdf: application/pdf

      Grails 3.0.4 - 3.0.7

      Supported, but only with mail plugin 2.0.0.RC4. (See https://github.com/grails3-plugins/mail/issues/16)

      Grails 3.0.8 > *

      Supported

      Usage

      To stream the content of a Controller-action as PDF just call /some/someAction.pdf

      class SomeController {
          def someAction() {
              def someInstance = SomeDomainObject.get(params.id)
      
              render( filename:"File ${someInstance.id}.pdf",
                      view:"/some/someGspTemplate",
                      model:[someInstance:someInstance],
                      header:"/pdf/someHeader",
                      footer:"/pdf/someFooter",
                      marginLeft:20,
                      marginTop:35,
                      marginBottom:20,
                      marginRight:20,
                      headerSpacing:10)
          }
      }

      Or create binary PDF data and use them for any other purpose

      class SomeService {
      
          static transactional = false
      
          def doSomething() {
              def byte[] pdfData = wkhtmltoxService.makePdf(
                      view: "/pdf/someGspTemplate",
                      model: [someInstance: someInstance],
                      header: "/pdf/someHeader",
                      footer: "/pdf/someFooter",
                      marginLeft: 20,
                      marginTop: 35,
                      marginBottom: 20,
                      marginRight: 20,
                      headerSpacing: 10)
      
      
              // DO Something e.g. send as mail
              //sendAsynchronousMail {
              //    multipart true
              //    to "[email protected]"
              //    subject "see PDF Attachment";
              //    attachBytes "PDF Attachment.pdf", "application/pdf", pdfData
              //    body "see my pdf attachment"
              //}
          }
      }

      Write your GSPs as usual, just make sure, that the urls to the assets are absolute and reachable by the host machine

      Development mode:

      grails.assets.url = "http://localhost:8080/assets/"

      Production:

      grails.assets.url = "https://example.com/assets/"

      Options

      See the following command for all options available:

      wkhtmltopdf --extended-help

      Known issues

      • wkhtmltopdf must work ( try: wkhtmltopdf www.myhomepage.com myhomepage.pdf )

      • For v0.12.4 & Mac OS users https://github.com/wkhtmltopdf/wkhtmltopdf/issues/3241

      • Not tested on Windows (except Windows 7)

      Changes since Grails 2 version

      • Properties renamed from grails.plugin.wkhtmltox.xxx to grails.plugin.wkhtmltopdf.xxx

      • Removed support for property grails.plugin.wkhtmltox.makeBinaryAvailableClosure. Was not documented and didn’t work as expected.

      • Package renamed to org.grails.plugins.wkhtmltopdf

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