How do I access root.$pdf from afterRender?

msageryd

I need to merge my TOC conditionally, so I thought I'd do it manually in afterRender. But I don't understand when $pdf is created and in which context it is available.

This is my TOC merge code from afterRender. The TOC report (usPIYj5DZ) does not get access to root.$pdf when I do it this way. I have probably missed something simple, but I don't know what..

  //------------- TOC ------------------------------------------------------------
  if(isTocEnabled) {
    const toc = await jsreport.render({
      template: {
        shortid: 'usPlYj5DZ',
        recipe: 'chrome-pdf'
      },
      data: {
        ...res.data,
      }
    });
     
    res.content = await jsreport.pdfUtils.merge(res.content, toc.content);
  }

msageryd

I just stumbled over the solution in one of the examples. Posting here if anyone needs this.

  if(isTocEnabled) {
    const pdf  = await jsreport.pdfUtils.parse(res.content, true) 

    const toc = await jsreport.render({
      template: {
        shortid: 'usPlYj5DZ',
        recipe: 'chrome-pdf'
      },
      data: {
        ...req.data,
        $pdf: pdf
      }
    });
     
    res.content = await jsreport.pdfUtils.merge(res.content, toc.content);
  }

msageryd

Hm, I do wonder if this is the solution..
I now have access to the $pdf.pages array, but all of the items arrays are empty.

I'm adding items like this (guid is a key from objects in an #each loop). I also tried to add a static string as key to ensure nothing was wrong with guid. Why doesn't this populate the items array?:

{{{pdfAddPageItem id=guid}}}

admin

The pdf utils need to remove the hidden marks (items, groups) before the afterRender is executed. So you need to skip this in order to use items in the afterRender script.

See this here in options.pdfUtils.removeHiddenMarks.
https://forum.jsreport.net/topic/2456/can-we-keep-the-page-number-upon-merging-the-pdfs-using-pdf-util/4

msageryd

I can confirm that my pdfAddPageItem call works.

If I merge the TOC with the "PDF Utils configuration" I get access to all items I have added with pdfAddPageItem.
If I merge the TOC in afterRender as per above, I get the pages array, but all items array are empty.

Why does this differ?
What should I do to access the "real" $pdf.pages array?

msageryd

Thanks Jan.
This saved my day. I would soon have gone crazy otherwise =)

Should I make some extra call lastly in afterRender to make the final cleanup of the hidden marks?

msageryd

Is there any way to get hold of the vertical position of the first TOC row? Sometimes I don't want a pagebreak just before the TOC, so there will be some other elements above the TOC on the same page.

Currently I'm adding a number of pagebreaks before the TOC to render the page numbers on the same page as the TOC is on. It would be even greater if I also could adjust the vertical position.

msageryd

I'll post the vertical-offset question separately to keep the Forum tidy.

msageryd

I'll answer my last question here as well, so the topic gets completely solved.

"Should I make some extra call lastly in afterRender to make the final cleanup of the hidden marks?"

This can be done by calling pdfUtils.postprocess as per the docs (https://jsreport.net/learn/pdf-utils#-postprocess-sourcepdfbuf-pdfmeta-pdfpassword-pdfsign-outlines-)