Save Reports with JavaScript/HTML "onclick" Button

Hi, I need your help please. I find following topic from Jason <a data-ipb='nomediaparse' href='http://www.eclipse.org/forums/index.php/t/238710/'>http://www.eclipse.org/forums/index.php/t/238710/</a>This is almost the perfect solution for me. He uses a script in beforeFactory that save the Report as PDF to a path on the server.<pre class="_prettyXprint">if( params["createPDF"] == true ){importPackage(Packages.org.eclipse.birt.report.engine.api);var re = reportContext.getReportRunnable().getReportEngine();var des = re.openReportDesign("C:/Consens/Auswertungen_Reports/BIRT_REPORTS/trunk/BIRT_REPORTS/INTERN/Testumgebung/rf/createpdfversion.rptdesign"); var ntask = re.createRunAndRenderTask(des);ntask.setParameterValue("createPDF", false);var options = new PDFRenderOption();var outputfile = "C:/birt/ReportEngine/samples/testtesta.pdf";options.setOutputFileName(outputfile);options.setOutputFormat("pdf");ntask.setRenderOption(options);ntask.run();ntask.close(); }</pre>But I would like to save the pdf via "Button". So I have tried to made a button with Text-Item (HTML) like this:<pre class="_prettyXprint _lang-html"><input type="button" name="button" value="create_pdf" onclick="if( params["createPDF"] == true ){importPackage(Packages.org.eclipse.birt.report.engine.api);var re = reportContext.getReportRunnable().getReportEngine();var des = re.openReportDesign("C:/Consens/Auswertungen_Reports/BIRT_REPORTS/trunk/BIRT_REPORTS/INTERN/Testumgebung/rf/createpdfversion.rptdesign"); var ntask = re.createRunAndRenderTask(des);ntask.setParameterValue("createPDF", false);var options = new PDFRenderOption();var outputfile = "C:/birt/ReportEngine/samples/testtesta1.pdf";options.setOutputFileName(outputfile);options.setOutputFormat("pdf");ntask.setRenderOption(options);ntask.run();ntask.close(); }"> </pre>Could you help me to fix my problem. Because if I click on the Button, nothing happens. Please see attached file. When you set to the correct path, a pdf File will created, if your run the report. And the same thing should happen, if I click on my button. Thanks a Lotkind regardsrf PS: at the time the upload have failed!

Find more posts tagged with

Comments

CBR

Hi, your code doesn't make any sense because you are starting to mix client side script with server side script. The code provided by Jason is to be executed on the server only and there is no way to also make it work on the client (e.g. in an onclick handler). That's why he is saving the pdf to a folder on the server and is trying to sent this file to the browser as a second step. The approach itself demonstrates a really cool feature (beeing able to execute the engine within a report) but it has some potential pitfals and therefore looks more like a quick and dirty hack:1) What if multiple users click that button at the same time? Then you are trying to store two different files at the same time using the same filename...this will give you an exception2) Is there anybody that deletes the files that are no longer beeing required on the server? If you are deciding to store the files on the server you also have to think about a potential cleanup of these files3) It is really hard to make it work on any server because you are using absolute paths everywhere in your code What's your use case? Perhaps there is a better option then that. One could think of writing a simple JSP page that generates the PDF and streams it to the client.

birtprofi

Hi cbrell, thanks for your reply. I am going to build an interactive report with some textfields and checkboxes. So the user could make some changes after the report is rendered. For example he change some data from the employees. After the user made this changes the report should print as pdf on server side. On Server Side there is a batchfile that send this pdf via e-mail and delete the file automatically. I modificated the script from Jason, so every pdf file has a unique number. The absolute paths are only for testing purposes. My target: Run the Report, Change some fields and then click the Button and save Report as PDF server side. best regardsrf

CBR

Oh i see. You have to be aware that the client browser which displays the report is not able to directly execute any code on the server. The only thing it can do is to call a url which will in return generate the report and sent it as an email. I am assuming that you have some html input fields in your report that you expect the enduser to fill in. Then you have a button that submits the users input to a servlet on the server. The servlet now generates the report as a pdf and uses the url parameters as parameters for your report. As a last step it sents the pdf as email attachment. In your previous code you were trying to execute the report logic in the client browser. At that time (if report is displayed in the browser) you have no chance to call something on the server (page is already generated).

birtprofi

Hi, thank your for your explanation.best regards