Basic usage

To use this feature, you should:

• declare plone.browserlayer as a dependency, e.g. in setup.py:

  install_requires=[
        'plone.browserlayer',
    ],
  

• ensure that its ZCML is loaded, e.g. with an include from your own package:

  <include package="plone.browserlayer" />
  

• create a layer marker interface unique to your product:

  from zope.interface import Interface
  class IMyProductLayer(Interface):
      """A layer specific to my product
      """
  

• register this with GenericSetup, in a browserlayer.xml file:

  <layers>
      <layer name="my.product"
             interface="my.product.interfaces.IMyProductLayer" />
  </layers>
  

• register visual components in ZCML for this layer, e.g.:

  <browser:page
      name="my-view"
      for="*"
      layer=".interfaces.IMyProductLayer"
      permission="zope.Public"
      template="my-view.pt"
      />
  

2.1.1 (2011-11-24)

• Added uninstall support to browserlayer.xml with the 'remove' option. [maurits]
• GS export xml is now repeatable. Before two consecutive exports could yield differently ordered results. [do3cc]

2.1 - 2011-05-12

• Update import of BeforeTraverseEvent to come from zope.traversing instead of zope.app.publication. [davisagli]
• Add MANIFEST.in [WouterVH]

2.0.1 - 2010-09-21

• Make sure the layers don't get applied twice if the site is traversed more than once (such as in a vhosting URL). [davisagli]

2.0 - 2010-07-18

• Update license to GPL version 2 only. [hannosch]
• Package metadata cleanup, require Zope2 distribution. [hannosch]

1.0.1 - 2009-09-09

• Be more robust against broken layer registrations. These can occur when packages with registered layers are removed. [wichert]
• Clarified license and copyright. [hannosch]
• Register ourselves for the more generic ISiteRoot from CMFCore and not IPloneSiteRoot. [hannosch]
• Declare test dependencies in an extra. [hannosch]
• Specify package dependencies. [hannosch]

1.0.0 - 2008-04-20

• Unchanged from 1.0rc4

1.0rc4 - 2008-04-13

• Register the GenericSetup import and export steps using zcml. This means you will no longer need to install this package manually. [wichert]

1.0rc3 - 2008-03-09

• Include README.txt and HISTORY.txt in the package's long description. [wichert]
• Add metadata.xml to the GenericSetup profile. This fixes a deprecation warning for Plone 3.1 and later. [wichert]

1.0b1 - 2007-09-23

• Initial package structure. [zopeskel]