Python 使用图片生成PDF Django rest框架

发布于05月04日

使用下面的代码，我可以轻松生成PDF:

import weasyprint

def admin_order_pdf(request, sell_id):  # working fine 
   try:
      sell = Sell.objects.get(id=sell_id)
   except Sell.DoesNotExist:
      return HttpResponse('Sell object does not exist')

   html = render_to_string('sell_invoice.html', {'sell': sell})
   response = HttpResponse(content_type='application/pdf')

   app_static_dir = os.path.join(settings.BASE_DIR, 'pdf', 'static')

   css_path = os.path.join(app_static_dir, 'css', 'css.css')

   response['Content-Disposition'] = f'filename=sell_{sell.id}.pdf'

   weasyprint.HTML(string=html).write_pdf(response, stylesheets=[weasyprint.CSS(css_path)])

   return response

然而，尽管我可以设计带有内联CSS和CSS文件的PDF，但我不知道如何将任何照片或图片插入其中.是否可以将图片/徽标添加到PDF中？如果是这样，我该如何处理呢？

推荐答案

You can easily pass encoded data using Python get logo.

def get_logo_base64_encoded_data():
    logo_path = os.path.join(settings.BASE_DIR, 'pdf', 'static', 'logo', 'logo.png')
    with open(logo_path, 'rb') as f:
        logo_data = f.read()
    return base64.b64encode(logo_data).decode()

def admin_order_pdf(request, sell_id):
    try:
        sell = Sell.objects.get(id=sell_id)
    except Sell.DoesNotExist:
        return HttpResponse('Sell object does not exist')

    html = render_to_string('sell_invoice.html', {'sell': sell, 'logo_base64_encoded_data': get_logo_base64_encoded_data()})
    response = HttpResponse(content_type='application/pdf')
    response['Content-Disposition'] = f'filename=sell_{sell.id}.pdf'

   
    weasyprint.HTML(string=html).write_pdf(response)

    return response