[Zope3-Users] substitute for deprecated response.write()?

[Adam Summers]

Hi,

I was having a look at Phillipp's fabulous book (thanks!), and came 
across the code for publishing a PDF document to the browser (this is 
slightly modified from the book):

from zope.app import zapi
from zope.app.publisher.browser import BrowserView

from ccard.pdf.interfaces import IPDFPresentation

class PDFView(BrowserView):

  def __call__(self):
    pdf = zapi.getViewProviding(self.context, IPDFPresentation, 
self.request)
    filename = zapi.name(self.context) + '.pdf'
    response = self.request.response
    response.setHeader('Context-Disposition', 'attachment; filename=%s' 
% filena
me)
    response.setHeader('Content=Type', 'application/pdf')
    response.setHeader('Content-Length', len(pdf.data))
    response.write(pdf.data)

However, these days I get the error:

2005-12-28T15:29:56 ERROR SiteError 
http://localhost:8080/++skin++Boston/t2/Cred
itCard/pdf
Traceback (most recent call last):
  File "/home/Adam/z3/Zope3/src/zope/publisher/publish.py", line 138, in 
publish
    result = publication.callObject(request, object)
  File 
"/home/Adam/z3/Zope3/src/zope/app/publication/zopepublication.py", line 1
61, in callObject
    return mapply(ob, request.getPositionalArguments(), request)
  File "/home/Adam/z3/Zope3/src/zope/publisher/publish.py", line 113, in 
mapply
    return debug_call(object, args)
  File "/home/Adam/z3/Zope3/src/zope/publisher/publish.py", line 119, in 
debug_c
all
    return object(*args)
  File "/home/Adam/z3/products/ccard/pdf/browser.py", line 15, in __call__
    response.write(pdf.data)
AttributeError: 'BrowserResponse' object has no attribute 'write'

What is the correct technique, now that BrowserResponse does not have 
write()

TIA, and Happy New Year
Adam