用django创建PDF（wkhtmltopdf） [英] Creating PDFs with django (wkhtmltopdf)
问题描述
django 中获取视图以返回一个 PDF 使用 wkhtmltopdf 。 django-wkhtmltopdf 附带的示例数量有限，他们假设我没有的知识水平。我已经浏览了源代码，但是我无法使用它的头或尾（例如， PDFTemplateView 和 PDFTemplateResponse之间的区别？！？） 我将非常感谢任何帮助。
b
$ b
def some_view（request，sID）：
something = get_object_or_404（Something，id = sID）
return render_to_response .html'，{'something'：something}，context_instance = RequestContext（request））
我得到以下简单的视图，为我提供一个 pdf ，而不是一个 html 文件？
编辑2
我目前正在玩：
def pdf_view（request，sID）：
template ='pdf.html'
something = get_object_or_40 4（Something，id = sID）
context = {
'something'：Something，
'object_for_header_and_footer'：something.object_for_header_and_footer，
}
cmd_options = settings。 WKHTMLTOPDF_CMD_OPTIONS
返回PDFTemplateResponse（request = request，
context = context，
template = template，
filename ='something'，
header_template ='header .html'，
footer_template ='footer.html'，
cmd_options = cmd_options）
但是我得到'str'对象在。我不知道是否开始黑客wkhtmltopdf？！？？ /usr/local/lib/python2.7/dist-中没有属性'update' wkhtmltopdf中的packages / wkhtmltopdf / utils.py第74行
PDFTemplateView和PDFTemplateResponse之间的区别是视图是一个基于类的视图。并且PDFTemplateResponse呈现pdf数据并设置正确的响应头。要添加页眉和页脚：
＃urls.py
from django.conf.urls.defaults导入*
从wkhtmltopdf.views导入PDFTemplateView
urlpatterns = patterns（''，
...
url（r'^ pdf / $ '，PDFTemplateView.as_view（template_name ='my_template.html'，
filename ='my_pdf.pdf'，
header_template ='my_header_template.html'，
footer_template ='my_footer_template.html'
...
），name ='pdf'），
）
在浏览器中打开pdf /将基于my_template.html my_header_template.html和my_footer_template.html开始下载my_pdf.pdf。
高级示例显示如何子类化PDFTemplateView扩展和更改PDFTemplateView的逻辑。要了解发生什么，请参阅使用基于类的视图。
喜欢 header_template 和 footer_template 定义一个 response_class 。因为PDFTemplateResponse是默认值，所以您不需要定义它。
编辑
以下简单视图为您提供了pdf而不是HTML。这不是使用django-wkhtmltopdf。您可以在html2pdf函数中使用wkhtmltopdf。
def some_view（request）：
t = loader.get_template（'myapp /template.html'）
c = RequestContext（request，{'foo'：'bar'}）
html = t.render（c）
pdf_data = html2pdf（html）＃你最喜欢html2pdf generator
response = HttpResponse（pdf_data，content_type ='application / pdf'）
response ['Content-Disposition'] ='attachment; filename =some_filename.pdf'
return response
编辑2
一个简单的上下文视图：
template.html
<！DOCTYPE html>
< html>
< head>
< meta charset =utf-8/>
< title> Untitled< / title>
< / head>
< body>
< h1> {{title}}< / h1>
< / body>
< / html>
urls.py
from views import MyPDFView
urlpatterns = patterns（''，
（r'^ pdf /'，MyPDFView.as_view（）），
）
views.py
code> from django.views.generic.base import从wkhtmltopdf.views导入查看
导入PDFTemplateResponse
class MyPDFView（View）：
template ='template.html'
context = {'title'：'Hello World！'}
def get（self，request）：
response = PDFTemplateResponse（request = request，
template = self.template，
filename =hello.pdf，
context = self.context，
show_content_in_browser = False，
cmd_options = {'margin-top'：50， }，
）
返回答复
编辑3
如果您使用DetailView，可以将对象添加到上下文中：
url（r'^ books / （？P< pk> \d +）/ $'，MyPDFView.as_view（），name ='book-detail'），
class MyPDFView（DetailView）：
template ='pdftestapp / template.html'
context = {'title'：'Hello World！'}
model = Book
def get（self，request，* args，** kwargs）：
self.context ['book'] = self.get_object（）
response = PDFTemplateResponse（request = request，
template = self.template ，
filename =hello.pdf，
context = self.context，
show_content_in_browser = False，
cmd_options = {'margin-top'：50，}
）
返回响应
Could someone please provide me with a comprehensive example of how to get a view in django to return a PDF using wkhtmltopdf. There are limited number of examples that come with django-wkhtmltopdf and they presume a level of knowledge I just don't have. I have looked through the source code but I can't make heads or tails of how to use it (for example whats the difference between PDFTemplateView and PDFTemplateResponse?!?)
I would be very grateful for any help.
BTW(I'm using templates for the header and footer as well)
EDIT
def some_view(request,sID):
something = get_object_or_404(Something,id=sID)
return render_to_response('something.html', {'something':something}, context_instance=RequestContext(request))
How would I get the following simple view to provide me with a pdf instead of an html file?
EDIT 2
I am currently playing around with:
def pdf_view(request,sID):
template = 'pdf.html'
something = get_object_or_404(Something,id=sID)
context = {
'something' : Something,
'object_for_header_and_footer': something.object_for_header_and_footer,
}
cmd_options = settings.WKHTMLTOPDF_CMD_OPTIONS
return PDFTemplateResponse(request=request,
context=context,
template=template,
filename='something',
header_template='header.html',
footer_template='footer.html',
cmd_options=cmd_options)
but I am getting 'str' object has no attribute 'update' in /usr/local/lib/python2.7/dist-packages/wkhtmltopdf/utils.py in wkhtmltopdf, line 74. I don't know whether to starting hacking wkhtmltopdf?!?!
The difference between PDFTemplateView and PDFTemplateResponse is that the view is a class-based view. And PDFTemplateResponse renders the pdf data and sets the right response headers. To add header and footer:
# urls.py
from django.conf.urls.defaults import *
from wkhtmltopdf.views import PDFTemplateView
urlpatterns = patterns('',
...
url(r'^pdf/$', PDFTemplateView.as_view(template_name='my_template.html',
filename='my_pdf.pdf',
header_template='my_header_template.html',
footer_template='my_footer_template.html',
...
), name='pdf'),
)
Opening pdf/ in your browser will start a download of my_pdf.pdf based on the my_template.html, my_header_template.html and my_footer_template.html.
The advanced example shows how to subclass PDFTemplateView extending and changing the logic of PDFTemplateView. To understand what happens read Using class based views.
Like header_template and footer_template you can define a response_class. Because PDFTemplateResponse is the default, you don't have to define it.
EDIT
The following simple view provides you with a pdf instead of an html. This is not using django-wkhtmltopdf. You could use wkhtmltopdf in your html2pdf function.
def some_view(request):
t = loader.get_template('myapp/template.html')
c = RequestContext(request, {'foo': 'bar'})
html = t.render(c)
pdf_data = html2pdf(html) # Your favorite html2pdf generator
response = HttpResponse(pdf_data, content_type='application/pdf')
response['Content-Disposition'] = 'attachment; filename="some_filename.pdf"'
return response
EDIT 2
A simple view with context:
template.html
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>Untitled</title>
</head>
<body>
<h1>{{ title }}</h1>
</body>
</html>
urls.py
from views import MyPDFView
urlpatterns = patterns('',
(r'^pdf/', MyPDFView.as_view()),
)
views.py
from django.views.generic.base import View
from wkhtmltopdf.views import PDFTemplateResponse
class MyPDFView(View):
template='template.html'
context= {'title': 'Hello World!'}
def get(self, request):
response = PDFTemplateResponse(request=request,
template=self.template,
filename="hello.pdf",
context= self.context,
show_content_in_browser=False,
cmd_options={'margin-top': 50,},
)
return response
EDIT 3
If you use a DetailView, you can add the object to context:
url(r'^books/(?P<pk>\d+)/$', MyPDFView.as_view(), name='book-detail'),
class MyPDFView(DetailView):
template='pdftestapp/template.html'
context= {'title': 'Hello World!'}
model = Book
def get(self, request, *args, **kwargs):
self.context['book'] = self.get_object()
response=PDFTemplateResponse(request=request,
template=self.template,
filename ="hello.pdf",
context=self.context,
show_content_in_browser=False,
cmd_options={'margin-top': 50,}
)
return response
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