I want my view to respond with a file for downloading, so that the
browser pops up the download/file save dialog.
I am using the 'Content-Disposition' header to specify the name of the
file.
When I use the django development server, it works perfectly in Firefox
and IE6 (latest versions). When I switch to Apache with mod_python, it
continues to work with Firefox, but IE6 apparently ignores the
'Content-Disposition' header and tries to save the file as the GET
parameters part of the URL, including the question mark. (For example,
if the URL is 'http://192.168.1.109/report?id=12345' then IE will offer
to save the file as '?id=12345', while Firefox will use the filename
specified in Content-Disposition header. )
Regarding mimetype, I have some alternatives that may work with
development server or Firefox, but not with Apache and IE.
Regarding the filename format in the Content-Disposition value, Firefox
requires quotation marks around the filename if it has spaces in it,
but on the development server at least IE can handle them with no
spaces.
So, can anyone suggest why IE would respect Content-Disposition on
development server but not on Apache ? I have the default Apache
configuration on Ubuntu 6.06 server, with a modified httpd.conf as
described in the django mod_python deployment document.
Hmm, one last point to mention: the contents of the report is not a
regular Excel file - did you know that you can save an HTML file that
has a table in it with a .xls extension and Excel will treat it just
like a regular Excel file? (If you modify and save it in Excel it will
be converted to a regular Excel file.) So I make the report using an
HTML table, but save it as a .xls file and the web service consumer
thinks they're getting an Excel file, and everyone is happy. I mention
this because I realize IE might be inspecting the contents of the file
and deciding it is not really an Excel file. But this would be contrary
to the description I read of its behavior, which is that IE respects
the Content-Disposition header; and anyway, why would it happen on
Apache but not on the Django development server?
Enough, here is the view code:
from django.http import HttpResponse
from mymodule import prepare_report
def get_report(request):
try:
id = request.GET["id"]
int(id)
except KeyError, ValueError:
raise Http404
report_filename, report = prepare_report(id)
#response = HttpResponse(mimetype='application/octet-stream')
#response = HttpResponse(mimetype='application/msexcel')
response = HttpResponse(mimetype='application/vnd.ms-excel')
#response['Content-Disposition'] = 'attachment; filename=%s' %
report_filename
response['Content-Disposition'] = 'attachment; filename="%s"' %
report_filename
response.write(report)
return response
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