-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hey, Why was the 'layer' ZCML argument removed in zope.component 4.0? Until now, I didn't recognize that it was "long deprecated". Here ist the CHANGES.txt entry from pypi: http://pypi.python.org/pypi/zope.component """ Removed the long-deprecated layer argument to the zope.component.zcml.view and zope.component.zcml.resource ZCML directives. """ Looking at zope.component.zcml.py in 3.12.1, it says: """ The 'layer' argument of the 'view' directive has been deprecated. Use the 'type' argument instead. If you have an existing 'type' argument IBrowserRequest, replace it with the 'layer' argument (the layer subclasses IBrowserRequest). which subclasses BrowserRequest. """ The statement, that we should use the 'type' argument instead should go into zope.component - otherwise, this helpful info is lost, since it's removed in 4.0. Looking at zope.component.zcml, the 'type' argument seems to define an Interface type. So, can it be used just like the 'layer' argument? Plone and lots of it's addons make heavy use of the 'layer' argument in view and resource definitions. Best, Johannes Raggam - -- programmatic web development di(fh) johannes raggam / thet python plone zope development mail: office@programmatic.pro web: http://programmatic.pro http://bluedynamics.com -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://www.enigmail.net/ iEYEARECAAYFAlCssQ0ACgkQW4mNMQxDgAcgIQCfcI1XDEZe4TuE4CouNXHZ+6of 7vAAnRK7RKxkoctsslym82PEMttet+LK =6pX8 -----END PGP SIGNATURE-----