app/django/contrib/formtools/utils.py
author Mario Ferraro <fadinlight@gmail.com>
Sun, 15 Nov 2009 22:12:20 +0100
changeset 3093 d1be59b6b627
parent 323 ff1a9aa48cfd
permissions -rw-r--r--
GMaps related JS changed to use new google namespace. Google is going to change permanently in the future the way to load its services, so better stay safe. Also this commit shows uses of the new melange.js module. Fixes Issue 634.
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try:
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    import cPickle as pickle
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except ImportError:
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    import pickle
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from django.conf import settings
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from django.utils.hashcompat import md5_constructor
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from django.forms import BooleanField
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def security_hash(request, form, *args):
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    """
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    Calculates a security hash for the given Form instance.
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    This creates a list of the form field names/values in a deterministic
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    order, pickles the result with the SECRET_KEY setting, then takes an md5
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    hash of that.
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    """
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    data = [(bf.name, bf.field.clean(bf.data) or '') for bf in form]
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    data.extend(args)
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    data.append(settings.SECRET_KEY)
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    # Use HIGHEST_PROTOCOL because it's the most efficient. It requires
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    # Python 2.3, but Django requires 2.3 anyway, so that's OK.
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    pickled = pickle.dumps(data, pickle.HIGHEST_PROTOCOL)
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    return md5_constructor(pickled).hexdigest()
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