[BlueBream] Exception views, again

[Justin Ryan]

Hiya..

So, recently when I asked about this, Michael Howitz responded
helpfully suggesting that I may need a layer declaration, as here:

  http://www.mail-archive.com/bluebream@zope.org/msg00396.html

I also see there is a quick note regarding this at:

  http://bluebream.zope.org/doc/1.0/faq.html#how-do-i-write-a-custom-404-error-page

Not sure if that's new or I just missed it before.

After finishing some other tasks in the project I was working on, I
came back around to this problem and tried this:

  $ paster create -t bluebream unauth

Edited unauth/src/unauth/welcome/interfaces.py to add:

from zope.publisher.interfaces.browser import IDefaultBrowserLayer

class ISampleApplicationBrowserLayer(IDefaultBrowserLayer):
  """Layer for Sample Application."""

Edited unauth/src/unauth/welcome/configure.zcml to add:


  <interface
      interface="unauth.welcome.interfaces.ISampleApplicationBrowserLayer"
      type="zope.publisher.interfaces.browser.IBrowserSkinType"
      name="Unauth"
      />

Added to each browser: block:

      layer="unauth.welcome.interfaces.ISampleApplicationBrowserLayer"

Added:

  <browser:defaultSkin name="Unauth" />

And, the Unauthorized view:

  <browser:page
     for="zope.exceptions.IUnauthorized"
     name="index"
     permission="zope.Public"
     template="unauth.pt"
     layer="unauth.welcome.interfaces.ISampleApplicationBrowserLayer"
     />

Also tried for="zope.security.interfaces.IUnauthorized",
for="zope.publisher.interfaces.INotFound" (as in Baiju's docs linked
above) and for="zope.interface.common.interfaces.IException", to no
avail.

The actual 'simplest use case' project i'm working with right now is at:

  http://meteor.bitmonk.net/unauth-test.tbz2

Clearly, I'm missing something obvious, and I'll be happy to
contribute to making the docs clearer in this area.

Best, and thanks in advance..

Justin