rpy knit2.html example

rutils.py

import imp

def rmarkdown_page(page_id, **kwargs):
    page = Page.objects.get(id=page_id)
    if not RPY2_INSTALLED:
        logger.info("rpy2 not found. I won't convert the raw text.")
        return page.body
    with open("/var/tmp/tmp.Rmd", "w") as f:
        f.write(page.body)
    ro.r("library('knitr');"
         "knit2html(input='/var/tmp/tmp.Rmd', output='/var/tmp/tmp.html');")
    with open("/var/tmp/tmp.html", "r") as f:
        content = f.read()
    content = re.sub(r"<[/]*body>", "", content)
    content = re.sub(r"<[/]*html>", "", content)
    content = content[content.find("</head>") + len("</head>"):]
    return content


# Import only if rpy2 is available
try:
    imp.find_module("rpy2")
    from rpy2 import robjects as ro
    RPY2_INSTALLED = True
except ImportError:
    RPY2_INSTALLED = False