在 pdf weasyprint 中附加 img 文件

Question

我需要有关在 pdf 中附加 img 文件的帮助。我们使用 WeasyPrint 库从 html.

生成 pdf

在html中像这样连接img文件

<img src="1.png" alt="">
<img src="2.png" alt="">
<img src="3.png" alt="">

但它不起作用。我没看到图片。

Answer 1

图片文件路径使用static

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

并在 HTML class 中传递 base_url views.py

pdf_file = HTML(string=rendered_html, base_url=request.build_absolute_uri())

html 文件

<!DOCTYPE html>
<html lang="en">
{% load static %}
<head>
    <meta charset="UTF-8">
    <title>Document</title>
</head>
<body>
    <div>
        <img src="{% static 'images/static.jpg' %}" alt="">
    </div>
</body>
</html>

views.py

from django.template.loader import get_template
from weasyprint import HTML, CSS
from django.conf import settings
from django.http import HttpResponse


def generate_pdf(request):
    html_template = get_template('latest/html_pdf.html')
    user = request.user
    rendered_html = html_template.render().encode(encoding="UTF-8")
    pdf_file = HTML(string=rendered_html, base_url=request.build_absolute_uri()).write_pdf(stylesheets=[CSS(settings.STATIC_ROOT +  '/css/generate_html.css')])



    http_response = HttpResponse(pdf_file, content_type='application/pdf')
    http_response['Content-Disposition'] = 'filename="generate_html.pdf"'

    return http_response

Answer 2

在发送附有 pdf 的电子邮件的情况下，可以将路径从视图传递到专用于电子邮件的函数。 views.py

[...]
path = request.build_absolute_uri()          # build absolute path
order_confirmation.delay(order.id, path)     # pass to func
[...]

tasks.py

@app.task
def order_confirmation(order_id, path):       # receive path
    order = Order.objects.get(id=order_id)
    subject = f"Order nr. {order.id}"
    email_from = settings.EMAIL
    email_to = order.get_email
    message = (...)
    email = EmailMessage(subject, message, email_from, [email_to])
    html = render_to_string('pdf.html', {'order' : order, 'company': company})
    out = BytesIO()
    stylesheets=[weasyprint.CSS(settings.STATIC_ROOT + '/css/pdf.css')]
    weasyprint.HTML(string=html, base_url=path).write_pdf(out, stylesheets=stylesheets)      # use here
    email.attach(f'order_{order.id}.pdf',
        out.getvalue(),
        'application/pdf')
    email.send()

在 pdf weasyprint 中附加 img 文件

attach img file in pdf weasyprint

python

django

pdf-generation

weasyprint