Displays the form entries in a HTML table with option to
        export as CSV file.

def entries_view(self, request, form_id):
        """
        Displays the form entries in a HTML table with option to
        export as CSV file.
        """
        if request.POST.get("back"):
            change_url = admin_url(Form, "change", form_id)
            return HttpResponseRedirect(change_url)
        form = get_object_or_404(Form, id=form_id)
        entries_form = EntriesForm(form, request, request.POST or None)
        delete_entries_perm = "%s.delete_formentry" % FormEntry._meta.app_label
        can_delete_entries = request.user.has_perm(delete_entries_perm)
        submitted = entries_form.is_valid()
        if submitted:
            if request.POST.get("export"):
                response = HttpResponse(content_type="text/csv")
                timestamp = slugify(datetime.now().ctime())
                fname = "%s-%s.csv" % (form.slug, timestamp)
                header = "attachment; filename=%s" % fname
                response["Content-Disposition"] = header
                queue = StringIO()
                delimiter = settings.FORMS_CSV_DELIMITER
                try:
                    csv = writer(queue, delimiter=delimiter)
                    writerow = csv.writerow
                except TypeError:
                    queue = BytesIO()
                    delimiter = bytes(delimiter, encoding="utf-8")
                    csv = writer(queue, delimiter=delimiter)
                    writerow = lambda row: csv.writerow([c.encode("utf-8")
                        if hasattr(c, "encode") else c for c in row])
                writerow(entries_form.columns())
                for row in entries_form.rows(csv=True):
                    writerow(row)
                data = queue.getvalue()
                response.write(data)
                return response
            elif request.POST.get("delete") and can_delete_entries:
                selected = request.POST.getlist("selected")
                if selected:
                    entries = FormEntry.objects.filter(id__in=selected)
                    count = entries.count()
                    if count > 0:
                        entries.delete()
                        message = ungettext("1 entry deleted",
                                            "%(count)s entries deleted", count)
                        info(request, message % {"count": count})
        template = "admin/forms/entries.html"
        context = {"title": _("View Entries"), "entries_form": entries_form,
                   "opts": self.model._meta, "original": form,
                   "can_delete_entries": can_delete_entries,
                   "submitted": submitted}
        return render(request, template, context)