views.py 文件源码

def export_download(request, username, id_string, export_type, filename):
    owner = get_object_or_404(User, username__iexact=username)
    xform = get_object_or_404(XForm, id_string__exact=id_string, user=owner)
    helper_auth_helper(request)
    if not has_permission(xform, owner, request):
        return HttpResponseForbidden(_(u'Not shared.'))

    # find the export entry in the db
    export = get_object_or_404(Export, xform=xform, filename=filename)

    if (export_type == Export.GDOC_EXPORT or export_type == Export.EXTERNAL_EXPORT) \
            and export.export_url is not None:
        return HttpResponseRedirect(export.export_url)

    ext, mime_type = export_def_from_filename(export.filename)

    audit = {
        "xform": xform.id_string,
        "export_type": export.export_type
    }
    audit_log(
        Actions.EXPORT_DOWNLOADED, request.user, owner,
        _("Downloaded %(export_type)s export '%(filename)s' "
          "on '%(id_string)s'.") %
        {
            'export_type': export.export_type.upper(),
            'filename': export.filename,
            'id_string': xform.id_string,
        }, audit, request)
    if request.GET.get('raw'):
        id_string = None

    default_storage = get_storage_class()()
    if not isinstance(default_storage, FileSystemStorage):
        return HttpResponseRedirect(default_storage.url(export.filepath))
    basename = os.path.splitext(export.filename)[0]
    response = response_with_mimetype_and_name(
        mime_type, name=basename, extension=ext,
        file_path=export.filepath, show_date=False)
    return response