/usr/share/pyshared/zope/publisher/defaultview.py is in python-zope.publisher 3.12.6-2.
This file is owned by root:root, with mode 0o644.
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#
# Copyright (c) 2003 Zope Foundation and Contributors.
# All Rights Reserved.
#
# This software is subject to the provisions of the Zope Public License,
# Version 2.1 (ZPL). A copy of the ZPL should accompany this distribution.
# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
# FOR A PARTICULAR PURPOSE.
#
##############################################################################
"""Default view name API
"""
from zope.component.interfaces import ComponentLookupError
from zope.component import getSiteManager
import zope.interface
from zope.publisher.interfaces import IDefaultViewName
class IDefaultViewNameAPI(zope.interface.Interface):
def getDefaultViewName(object, request, context=None):
"""Get the name of the default view for the object and request.
If a matching default view name cannot be found, raises
ComponentLookupError.
If context is not specified, attempts to use
object to specify a context.
"""
def queryDefaultViewName(object, request, default=None, context=None):
"""Look for the name of the default view for the object and request.
If a matching default view name cannot be found, returns the default.
If context is not specified, attempts to use object to specify
a context.
"""
def getDefaultViewName(object, request, context=None):
name = queryDefaultViewName(object, request, context=context)
if name is not None:
return name
raise ComponentLookupError("Couldn't find default view name",
context, request)
def queryDefaultViewName(object, request, default=None, context=None):
"""
query the default view for a given object and request.
>>> from zope.publisher.defaultview import queryDefaultViewName
lets create an object with a default view.
>>> import zope.interface
>>> class IMyObject(zope.interface.Interface):
... pass
>>> class MyObject(object):
... zope.interface.implements(IMyObject)
>>> queryDefaultViewName(MyObject(), object()) is None
True
Now we can will set a default view.
>>> import zope.component
>>> import zope.publisher.interfaces
>>> zope.component.provideAdapter('name',
... adapts=(IMyObject, zope.interface.Interface),
... provides=zope.publisher.interfaces.IDefaultViewName)
>>> queryDefaultViewName(MyObject(), object())
'name'
This also works if the name is empty
>>> zope.component.provideAdapter('',
... adapts=(IMyObject, zope.interface.Interface),
... provides=zope.publisher.interfaces.IDefaultViewName)
>>> queryDefaultViewName(MyObject(), object())
''
"""
name = getSiteManager(context).adapters.lookup(
map(zope.interface.providedBy, (object, request)), IDefaultViewName)
if name is None:
return default
return name
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