使用Django将HTML转换为PDF

时间：2017-06-21 09:16:12

标签： python django

我正在尝试将HTML转换为PDF，但我收到以下错误：

＆＃39;字典＆＃39; object没有属性＆＃39; render_context＆＃39;。

代码如下：

utils.py

from io import BytesIO
from django.http import HttpResponse
from django.template.loader import get_template

from xhtml2pdf import pisa


def render_to_pdf(template_src, context_dict={}):
    template = get_template(template_src)
    html = template.render(context_dict)
    result = BytesIO()
    pdf = pisa.pisaDocument(BytesIO(html.encode("ISO-8859-1")), result)
    if not pdf.err:
        return HttpResponse(result.getvalue(), content_type='application/pdf')
    return None

views.py

from django.http import HttpResponse
import datetime
from django.template.loader import get_template
from admin.views.utils import render_to_pdf  # created in step 4


def get_pdf_view(request, *args, **kwargs):
    template = get_template('certificate_appreciation_pdf.html')
    context = {
        'today': datetime.date.today(),
        'amount': 39.99,
        'customer_name': 'Cooper Mann',
        'order_id': 1233434,
    }
    html = template.render(context)
    pdf = render_to_pdf('certificate_appreciation_pdf.html', context)

certificate_appreciation_pdf.html

     <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
 <html>
     <head>
         <title>Title</title>
     </head>
     <body>
         <div class='wrapper'>
             <div class='header'>
                 <p class='title'>Invoice # </p>
             </div>
         <div>
         <div class='details'>
             Bill to: {{ order_id }}<br/>
             Amount: {{ amount }} <br/>
             Date: {{ today }}
             <hr class='hrItem' />
         </div>
     </div>
     </body>
 </html>

我不知道我在哪里犯错误。渲染到该页面时遇到错误

AttributeError at /pdf/
'dict' object has no attribute 'render_context'
Request Method: GET
Request URL:    http://0.0.0.0:8001/pdf/
Django Version: 1.5.5
Exception Type: AttributeError
Exception Value:    
'dict' object has no attribute 'render_context'
Exception Location: /usr/local/lib/python2.7/dist-packages/django/template/base.py in render, line 138
Python Executable:  /usr/bin/python
Python Version: 2.7.6
Python Path:    
['/home/linux/Desktop/project_directory/nasscom-final/django-pursuite/pursuite/../apps',
 './apps',
 '/home/linux/Desktop/project_directory/nasscom-final/django-pursuite',
 '/usr/local/lib/python2.7/dist-packages/Pursuite-1.7.18-py2.7.egg',
 '/usr/local/lib/python2.7/dist-packages/boto-2.45.0-py2.7.egg',
 '/usr/local/lib/python2.7/dist-packages/django_pagination-1.0.7-py2.7.egg',
 '/usr/local/lib/python2.7/dist-packages/Jinja2-2.9.3-py2.7.egg',
 '/usr/local/lib/python2.7/dist-packages/Sphinx-1.5.1-py2.7.egg',
 '/usr/local/lib/python2.7/dist-packages/MySQL_python-1.2.5-py2.7-linux-x86_64.egg',
 '/usr/lib/python2.7',
 '/usr/lib/python2.7/plat-x86_64-linux-gnu',
 '/usr/lib/python2.7/lib-tk',
 '/usr/lib/python2.7/lib-old',
 '/usr/lib/python2.7/lib-dynload',
 '/usr/local/lib/python2.7/dist-packages',
 '/usr/lib/python2.7/dist-packages',
 '/usr/lib/python2.7/dist-packages/PILcompat',
 '/usr/lib/python2.7/dist-packages/gtk-2.0',
 '/usr/lib/pymodules/python2.7',
 '/usr/lib/python2.7/dist-packages/ubuntu-sso-client']
Server time:    Wed, 21 Jun 2017 14:34:08 +0530

1 个答案:

答案 0 :(得分：1)

您使用的是非常旧（且不受支持）的Django版本。在该版本中，您需要将Context实例传递给template.render，而不是dict。

from django.template import Context
...
context = Context({...})
html = template.render(context)

但是，必须升级。此时没有理由使用Django 1.5。