Pylons middleware 404

i'm new to Python and Pylons and want to know how it is possible to cancle the start routin of the pylons app.

I found the middleware and want to do something like this:

    if error:
        abort(404)

But this brings me a 500 internal Server Er开发者_开发问答ror Message if error is true instead of a 404 Not Found Message.

Could anyone tell me how i can interupt start routin of pylons?

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Try adding a message in the call:

abort(404,"404 Not Found");

As well, you can customize the error documents. See: http://wiki.pylonshq.com/display/pylonsdocs/Error+Documents#changing-the-template

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The problem is with the condition not abort.

Try this way:

def test(self):
  username = ''
  if not username:
    abort(404)