Using django_xhtml2pdf with django 1.11" error: context must be a dict rather than Context."

Question

根据其中一条评论：我确实将代码更改为：

providers = Provider.objects.all()
context = { 'providers':providers}

我知道这没有什么不同，但我想无论如何我都会尝试一下，因为发生了一些奇怪的事情。我担心错误出在模块本身运行上，在我的 django 版本中。

我确实看到了其他答案，这让我感到困惑，因为我只是使用此处记录的内容：

https://spapas.github.io/2015/11/27/pdf-in-django/#django-integration

让 django_xhtml2pdf 工作正常。我的看法是这样的：

def providers_plain_old_view(request):
    resp = HttpResponse(content_type='application/pdf')
    context = {
        'providers': Provider.objects.all()
    }

    result = generate_pdf('ipaswdb/provider/providers_plain_old_view.html', file_object=resp, context=context)
    return result

我现在知道在我正在使用的 django 1.11.14 中有问题，但不知道如何修复错误：

Traceback (most recent call last):
  File "D:\Python27\lib\site-packages\django\core\handlers\exception.py", line 41, in inner
    response = get_response(request)
  File "D:\Python27\lib\site-packages\django\core\handlers\base.py", line 249, in _legacy_get_response
    response = self._get_response(request)
  File "D:\Python27\lib\site-packages\django\core\handlers\base.py", line 187, in _get_response
    response = self.process_exception_by_middleware(e, request)
  File "D:\Python27\lib\site-packages\django\core\handlers\base.py", line 185, in _get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
  File "D:\Programming\web\ipa_django\mysite\ipaswdb\views.py", line 312, in providers_plain_old_view
    result = generate_pdf('ipaswdb/provider/providers_plain_old_view.html', file_object=resp, context=context)
  File "D:\Python27\lib\site-packages\django_xhtml2pdf\utils.py", line 62, in generate_pdf
    generate_pdf_template_object(tmpl, file_object, context)
  File "D:\Python27\lib\site-packages\django_xhtml2pdf\utils.py", line 39, in generate_pdf_template_object
    html = template_object.render(Context(context))
  File "D:\Python27\lib\site-packages\django\template\backends\django.py", line 64, in render
    context = make_context(context, request, autoescape=self.backend.engine.autoescape)
  File "D:\Python27\lib\site-packages\django\template\context.py", line 287, in make_context
    raise TypeError('context must be a dict rather than %s.' % context.__class__.__name__)
TypeError: context must be a dict rather than Context.
"GET /ipaswdb/provider_roster/ HTTP/1.1" 500 86485

我的意思是它要我在最新的 django 版本中以不同的方式调用 generate_pdf 函数？

Answer 1

主要问题出在

行

File "D:\Python27\lib\site-packages\django_xhtml2pdf\utils.py", line 39, in generate_pdf_template_object
html = template_object.render(Context(context))

在错误输出中。这是 django-xhtml2pdf 包不是最新的 1.11 的问题。对渲染的调用已从

html = template_object.render(Context(context))

到

html = template_object.render(context)

根据升级到1.11的注意事项https://docs.djangoproject.com/en/1.11/ref/templates/upgrading/ django.template.loader节。

您可以等待他们通过提交错误报告来修复它，或者在您的 views.py

中实施软件包提供的功能

Using django_xhtml2pdf with django 1.11" error: context must be a dict rather than Context."

Using django_xhtml2pdf with django 1.11" error: context must be a dict rather than Context."

python

django

xhtml2pdf