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POMerge Existing PDF into new ReportLab PDF via flowables
 

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    <p>I have a reportlab <code>SimpleDocTemplate</code> and returning it as a dynamic PDF. I am generating it's content based on some Django model metadata. Here's my template setup:</p> <pre><code>buff = StringIO() doc = SimpleDocTemplate(buff, pagesize=letter, rightMargin=72,leftMargin=72, topMargin=72,bottomMargin=18) Story = [] </code></pre> <p>I can easily add textual metadata from the <code>Entry</code> model into the <code>Story</code> list to be built later:</p> <pre><code> ptext = '&lt;font size=20&gt;%s&lt;/font&gt;' % entry.title.title() paragraph = Paragraph(ptext, custom_styles["Custom"]) Story.append(paragraph) </code></pre> <p>And then generate the PDF to be returned in the response by calling <code>build</code> on the <code>SimpleDocTemplate</code>:</p> <pre><code>doc.build(Story, onFirstPage=entry_page_template, onLaterPages=entry_page_template) pdf = buff.getvalue() resp = HttpResponse(mimetype='application/x-download') resp['Content-Disposition'] = 'attachment;filename=logbook.pdf' resp.write(pdf) return resp </code></pre> <p>One metadata field on the model is a file attachment. When those file attachments are PDFs, I'd like to merge them into the Story that I am generating; IE meaning a PDF of reportlab "flowable" type.</p> <p>I'm attempting to do so using <code>pdfrw</code>, but haven't had any luck. Ideally I'd love to just call: </p> <pre><code>from pdfrw import PdfReader pdf = pPdfReader(entry.document.file.path) Story.append(pdf) </code></pre> <p>and append the pdf to the existing Story list to be included in the generation of the final document, as noted above.</p> <p>Anyone have any ideas? I tried something similar using pagexobj to create the pdf, trying to follow this example:</p> <p><a href="http://code.google.com/p/pdfrw/source/browse/trunk/examples/rl1/subset.py" rel="noreferrer">http://code.google.com/p/pdfrw/source/browse/trunk/examples/rl1/subset.py</a></p> <pre><code>from pdfrw.buildxobj import pagexobj from pdfrw.toreportlab import makerl pdf = pagexobj(PdfReader(entry.document.file.path)) </code></pre> <p>But didn't have any luck either. Can someone explain to me the best way to merge an existing PDF file into a reportlab flowable? I'm no good with this stuff and have been banging my head on pdf-generation for days now. :) Any direction greatly appreciated!</p>
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    1. COI think you can do this with the paid version of ReportLab.
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    2. COUgh, I don't think the paid version of ReportLab is an option for me, unfortunately. :( Anyone have any alternatives?
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