'Create a Name for a Chart'

@staticmethod
def getChartName():

    import hashlib
    rvars = current.request.vars
    end_part = ('%s_%s' % (rvars.numericQuestion, rvars.labelQuestion))
    h = hashlib.sha256()
    h.update(end_part)
    encoded_part = h.hexdigest()
    chart_name = ('survey_series_%s_%s' % (rvars.series, encoded_part))
    return chart_name
