I'm having trouble developing a feed decorator. I feel like the
decorator I've come up with should work but isn't and I wanted to ask
if someone can spot my error.
I have two view methods one that returns a normal HTML view and
another that returns an rss feed of the same data. They both take the
same arguments. I am trying to create a decorator that checks the
request objects for a format variable in the querystring and returns
the feed view instead of the html view. Like so:
my_view_feed
@format_req('rss', my_view_feed)
my_view
So a request for '/site/foo/bar' would return 'my_view' but '/site/foo/
bar?format=rss' would return 'my_view_feed'
This is the decorator method I created and I would think would work
but I'm still struggling a bit with decorators with arguments, even
after reading Bruce's excellent post (http://www.artima.com/weblogs/
viewpost.jsp?thread=240845)
def format_req(fmt, new_fn):
def _decorator(view_fn):
def _wraped(request, *args, **kwargs):
req_format = request.GET.get('format', None)
if req_format == fmt:
return new_fn(request, *args, **kwargs)
# Default to returning the original method
return view_fn(request, *args, **kwargs)
return _wraped
return _decorator
I would have though a request with 'format=rss' would return new_view
but no matter what I do I always get view_fn returned.
Can anyone point me toward where I'm going wrong. As usual I'll post
the final code once I get it working for reference.
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