Dynamically set the name of the PDF in documentViewer

[ignLadd]

Hello,

Is there a way to parameterize the value of the download attribute of the documentViewer ? I need to set it dynamically.

page:

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<p:dialog id="showReport" widgetVar="showReport" modal="true" resizable="true" dynamic="true">
		<pe:documentViewer cache="true" id="pdfvisualizer" height="500" width="1200" 
		value="#{documentViewer.report}" zoom="page-width" download="parametrize-me-pls.pdf"/>
	    </p:dialog>

bean:

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@SessionScoped
public class DocumentViewerBean  implements Serializable {
	
	private static final long serialVersionUID = -565408561080994105L;

	private StreamedContent report;
	private String nameFile;
	
	public synchronized void getReport(AnagReg reg) throws FileNotFoundException{
		SimpleDateFormat sdf = new SimpleDateFormat("dd-MM-yyyy");
		nameFile = "REG_" + reg.getId().toString() + "_" + sdf.format(new Date()) + ".pdf" ;
		report =  new RegDataReport().buildReportPdf(nameFile, reg);
	}
	
	public StreamedContent getReport() {
		return report;
	}

	public void setReport(StreamedContent report) {
		this.report = report;
	}

	public String getNameFile() {
		return nameFile;
	}

	public void setNameFile(String nameFile) {
		this.nameFile = nameFile;
	}
}

I have already tried to pass the nameFile attribute using expression language [ download="#{documentViewer.nameFile}" ] but it doesn't seem to work

Thank you for your availability.

[Melloware]

The "download" attribute should work if its STREAMED content but the file name MUST end in ".pdf".

[Melloware]

Oh I think you are saying you can't use a ValueExpression as the download name it only works if it is hard coded?

[Melloware]

I see your problem. The #{namedFile} is not yet created in the bean by the time the component renders. Because I just tried this and it worked fine and my PDF downloaded as "pfe-rocks.pdf"

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<pe:documentViewer  value="#{basicDocumentViewerController.content}" download="#{basicDocumentViewerController.downloadFileName}"/>

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public class BasicDocumentViewerController implements Serializable {

	private static final long serialVersionUID = 1L;

	private String downloadFileName = "pfe-rocks.pdf";
	private StreamedContent content;

	public void onPrerender(final ComponentSystemEvent event) {

		try {

			final ByteArrayOutputStream out = new ByteArrayOutputStream();

			final Document document = new Document();
			PdfWriter.getInstance(document, out);
			document.open();

			for (int i = 0; i < 50; i++) {
				document.add(new Paragraph("All work and no play makes Jack a dull boy"));
			}

			document.close();
			content = new DefaultStreamedContent(new ByteArrayInputStream(out.toByteArray()), "application/pdf");
		} catch (final Exception e) {
			e.printStackTrace();
		}
	}

	public StreamedContent getContent() {
		return content;
	}

	public void setContent(final StreamedContent content) {
		this.content = content;
	}
	
	public String getDownloadFileName() {
		return downloadFileName;
	}

	public void setDownloadFileName(final String downloadFileName) {
		this.downloadFileName = downloadFileName;
	}
}

[ignLadd]

yes, it works perfectly. thank you so much.