    def pdf_from_post(self):
        """Returns a pdf stream with the stickers
        """
        html = self.request.form.get("html")
        style = self.request.form.get("style")
        reporthtml = "<html><head>{0}</head><body>{1}</body></html>"
        reporthtml = reporthtml.format(style, html)
        reporthtml = safe_unicode(reporthtml).encode("utf-8")
        pdf_fn = tempfile.mktemp(suffix=".pdf")
        pdf_file = createPdf(htmlreport=reporthtml, outfile=pdf_fn)
        return pdf_file