utf8 encoding not correct

[digi604]

utf8 characters like umlauts (öäü) are not rendered correctly... maybe an encoding problem

[digi604]

something like this fixes it:

def transform_to_pdf(response):
    import codecs
    content = codecs.BOM_UTF8 + response.content
    response['mimetype'] = 'application/pdf'
    response['Content-Disposition'] = 'attachment; filename=report.pdf'
    result = StringIO.StringIO()
    pdf = pisa.pisaDocument(StringIO.StringIO(content),
            result, link_callback=fetch_resources)
    response.write(result.getvalue())
    if not pdf.err:
        return response
    else:
        return HttpResponse("We had some errors<pre>%s</pre>" % pdf.err)