from fpdf import FPDF

Using Django Deployment
1

Hello I installed the fpdf2 library.
I created a function to do some testing that is called from a path.
Using the library example

from fpdf import FPDF

def StampaIscr(request, pk):
  # Si posiziona sull'Associato
  associato = get_object_or_404(Associati, pk=pk)

  pdf = FPDF('P', 'mm', 'Letter')
  pdf.add_page()

  pdf.set_font('helvetica', '', size=12)
  pdf.cell(40,10, "hello world")
  pdf.output("hello_world.pdf") returns the error that ik response or httpresponse is missing I tried inserting these lines 
  return HttpResponse
  return response

But it returns other errors.
Maybe it cannot be used in a function ?

2

A view must return some type of HTTP response to the browser issuing the request.

Writing a file on the server does not satisfy that requirement. You need to create the response to be returned to the browser.

3

I tried this code with the answer entry.

pdf = FPDF()
    pdf.add_page()
    pdf.set_font("Arial", size=12)
    pdf.cell(200, 10, txt="Benvenuto nel tuo PDF!", ln=True, align='C')

    # Finalizza il documento e lo invia al browser
    response = HttpResponse(content_type='application/pdf')
    response['Content-Disposition'] = 'attachment; filename="mio_documento.pdf"'
    pdf.output(name=response, dest='S')
    return response

it creates the pdf file for me but displays an empty file
There is some other thing that is not clear to me

4

First, you’re responding with binary data - this means you’ll want to use either a StreamingHttpResponse or a FileResponse. Then, you need to create a binary I/O object containing the PDF data generated by the output function.

This means that your response needs to look something like this:

output_pdf = pdf.output()
buffer = io.BytesIO(output_pdf)
return FileResponse(
  buffer, as_attachment=True, # or False, depending upon the desired behavior
  filename='mio_documento.pdf', content_type='application/pdf'
)

Also see How to create PDF files | Django documentation | Django

5

From the link you pointed me to I read the example and changed the library, using reportLab
I am trying to use a font that is probably not installed on the pc
The code in the example is this

import reportlab.rl_config
reportlab.rl_config.warnOnMissingFontGlyphs = 0
from reportlab.pdfbase import pdfmetrics
from reportlab.pdfbase.ttfonts import TTFonts
pdfmetrics.registerFont(TTFont('Vera', 'Vera.ttf'))
pdfmetrics.registerFont(TTFont('VeraBd', 'VeraBd.ttf'))
pdfmetrics.registerFont(TTFont('VeraIt', 'VeraIt.ttf'))
pdfmetrics.registerFont(TTFont('VeraBI', 'VeraBI.ttf'))
canvas.setFont('Vera', 32)
canvas.drawString(10, 150, “Some text encoded in UTF-8”)
canvas.drawString(10, 100, “In the Vera TT Font!”)

The code used to set the Hummingbird font is this:

pdfmetrics.registerFont(TTFont('Calibri-Light', 'Calibri-Light.ttf'))
c.setFont('Calibri-Light', 16)

But it doesn’t work and I didn’t understand why

6

Ok, I’m not sure why you changed libraries, but that’s your choice.

However, if you’re looking for assistance with this, please post the complete view and provide a more detailed explanation about the current issue being faced other than “it doesn’t work”.

7

Yes it was my choice as the example on django project was on and not fodf2.
For me one or the other is indifferent, the important thing is that I can achieve what I need.
I’ll post the code, what I can’t achieve is the Calibri font.
The code is in a view

def PrintIscr(request, pk):
 associate = get_object_or_404(Associate, pk=pk).
 pdfmetrics.registerFont(TTFont('Calibri-Light', 'Calibri Light.ttf'))
 buffer = BytesIO()
 c = canvas.Canvas(buffer, pagesize=A4)
 width, height = A4

 c.setFont(“Calibri-Light,” 20)
 c.drawCentredString(width/2, height-4 * cm, “Membership Application”)

This is the wording I see in the terminal
Calibri.TTF is missing

On googlefonts it is not presnete
I did a test by downloading Roboto from googlefonts, for dlele testing, but I have a doubt, after downoLoad there are several .ttf files for normal, bold, italic and other font. Does this mean that I have to register all the ttf files to then be able to use them ?
Does registering the font take up space or slow down the process ?
Is it possible to insert a link in the head, or is there another method to use ?

Thanks

8

I had experience with reportLab but it doesn’t allow various things and I went back to fpdf2. Now maybe I understand what you wanted to tell me about ‘…your choice…’