# this is our very own custom RSS feed generator class
class FooFeed(Rss201rev2Feed):

    # add_root_elements adds xml elements to the root node of the RSS XML.
    # In this case we add a 'foo' element to our feed root with a value of
    # 'bar'.
    def add_root_elements(self, handler):
        super(FooFeed, self).add_root_elements(handler)
        handler.addQuickElement(u'foo', 'bar')

    # add_item_elements adds elements to the actual items in the RSS XML.
    # In this case we add a 'foz' element with an attribute 'baz'. The values
    # for those two keys are coming out of the passed in item dict.
    def add_item_elements(self, handler, item):
        super(FooFeed, self).add_item_elements(handler, item)
        handler.addQuickElement(u'foz', item['foz'], attrs={'baz': item['baz']})

# this is our actual feed class that provides data for the RSS feed
class JobPostingFeed(Feed):
    # this will use our custom RSS feed generator class from above
    feed_type = FooFeed
    title = 'FooFeed stuff'
    link = '/'
    description = 'Freaky FooFeed stuff.'

    # this definies which objects are passed into the feed generator
    def items(self):
        return SomeModel.objects.order_by('-created_at')

    # This took me the most time to figure out even though the idea is pretty
    # simple. We used the item dictionary in add_item_elements above which is
    # filled with the values we define here. Since we are accessing the keys
    # 'foz' and 'baz' above we have to make sure those kyes/values actually
    # exist in the 'item' dict.
    def item_extra_kwargs(self, obj):
        return {
            'foz': obj.some_method(),
            'baz': obj.some_attribute,
        }