[Django]-PDF output using Weasyprint not showing images (Django)

46👍

✅

Fixed by:

Add base_url=request.build_absolute_uri() so that

html = HTML(string=html_string)

becomes

html = HTML(string=html_string, base_url=request.build_absolute_uri())

That will allow for relative URLs in the HTML file.

For the images, only PNG images seems to work for some reason.

For the HTML styles to show on the PDF, add presentational_hints=True as per the Weasyprint docs:

    pdf = html.write_pdf(stylesheets=[CSS(settings.STATIC_ROOT +  '/css/detail_pdf_gen.css')], presentational_hints=True);

👤선풍기

[Django]-Replacing a Django image doesn't delete original

8👍

Setup static for the path of your image as:

{% load static %}
<img src="{% static 'images/your_image.png %}" alt="" />

and then you have to pass the base_url in HTML class of Weasyprint as:

HTML(string=html_string, base_url=request.build_absolute_uri())

👤Abdul Rehman

7👍

After adding HTML(string=html_string, base_url=request.build_absolute_uri()) to my config images were still not loading. Had to use below logging to identify real issue.

import logging
logger = logging.getLogger('weasyprint')
logger.addHandler(logging.FileHandler('/tmp/weasyprint.log'))

Then check /tmp/weasyprint.log log file for errors.

Real issue for me was:

urlopen error [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: self signed certificate

Fix was to disable ssl verification:

import ssl
ssl._create_default_https_context = ssl._create_unverified_context

👤Jonny

0👍

I don’t know Weasyprint, but I’m using Pisa and it works very well with pictures into PDF output.

For example :

def PDFGeneration(request) :

    var1 = Table1.objects.last()
    var2 = Table2.objects.last()

    data = {"key1" : variable1, "key2" : variable2}

    html = get_template('My_template_raw.html').render(data)
    result = StringIO()

    with open(path, "w+b") as file :
      pdf = pisa.pisaDocument(StringIO(html), file, link_callback=link_callback)
      file.close()

      image_data = open(path, "rb").read()
      return HttpResponse(image_data, content_type="application/pdf")

    return render(request, 'HTML template', context)

and

def link_callback(uri, rel):
    if uri.find('chart.apis.google.com') != -1:
        return uri
    return os.path.join(settings.MEDIA_ROOT, uri.replace(settings.MEDIA_URL, ""))

My PDF is generated from an .html file and I have my picture like this :

<html>
    <head>
    {% load staticfiles %}
    {% load static %}

    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />   
    <link rel="stylesheet" type="text/css" href="{% static 'css/MyFile.css' %}"/>

    <style>

            body {
                font-family: Courier New, Courier, monospace;
                text-align: justify;
                list-style-type: none;
            }
    </style>

    </head>

    <body>

        <img src="{{MEDIA_ROOT}}Logo/logo.jpeg" width="250" height="66"/>
        <br></br>
        ...

👤Essex

0👍

I was having this problem. I added "base_url=’base_url’" to the following line and it finally worked.

html = weasyprint.HTML(string=rendered_string, base_url=’base_url’)

Attaching pic of my code for context.