app/django/contrib/formtools/utils.py
author Pawel Solyga <Pawel.Solyga@gmail.com>
Wed, 15 Oct 2008 14:06:33 +0000
changeset 338 0d78f41dde9b
parent 323 ff1a9aa48cfd
permissions -rw-r--r--
Show "Created by" read-only field in Document Edit view. Update size of TinyMCE widget in Document Edit/Create views. Change user property name to founder in Document model and update files according to this change (now founder is used in Group and Document models). Remove not used variables and imports in views/site/docs/edit.py. Refactor EditForm and CreateForm in views/site/docs/edit.py so that EditForm inherits from CreateForm and just extends it. Patch by: Pawel Solyga Review 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()