gistfile1.txt

def context_property(name, default=None):

    def getter(self, default=default):
        return getattr(self.context, name, default)

    def setter(self, value):
        setattr(self.context, name, value)

    def deleter(self):
        delattr(self.context, name)

    return property(getter, setter, deleter)

class Guideline(object):

    """ Adapter for Guideline """

    implements(IGuideline)
    adapts(IDexterityContent)

    def __init__(self, context):
        self.context = context

    gl_language = context_property('gl_language')
    gl_state = context_property('gl_state', '')
    gl_date = context_property('gl_date', '')
    gl_area = context_property('gl_area')
    gl_guideline_topics = context_property('gl_guideline_topics', None)
    gl_id = context_property('gl_id')