app/django/contrib/formtools/utils.py
author Lennard de Rijk <ljvderijk@gmail.com>
Sun, 08 Mar 2009 13:14:28 +0000
changeset 1741 0da1285f5bc0
parent 323 ff1a9aa48cfd
permissions -rw-r--r--
Public reviews are now shown on the public page for the student proposal. The assigned mentor name has been removed from the public page. The student proposal view now uses the new getReviewsForEntity method. Patch by: Lennard de Rijk Reviewed by:to-be-reviewed

try:
    import cPickle as pickle
except ImportError:
    import pickle

from django.conf import settings
from django.utils.hashcompat import md5_constructor
from django.forms import BooleanField

def security_hash(request, form, *args):
    """
    Calculates a security hash for the given Form instance.

    This creates a list of the form field names/values in a deterministic
    order, pickles the result with the SECRET_KEY setting, then takes an md5
    hash of that.
    """

    data = [(bf.name, bf.field.clean(bf.data) or '') for bf in form]
    data.extend(args)
    data.append(settings.SECRET_KEY)

    # Use HIGHEST_PROTOCOL because it's the most efficient. It requires
    # Python 2.3, but Django requires 2.3 anyway, so that's OK.
    pickled = pickle.dumps(data, pickle.HIGHEST_PROTOCOL)

    return md5_constructor(pickled).hexdigest()