c63285f8bc
git-svn-id: svn://svn.cy55.de/Zope3/src/cybertools/trunk@3543 fd906abe-77d9-0310-91a1-e0d9ade77398
75 lines
2.5 KiB
Python
75 lines
2.5 KiB
Python
#
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# Copyright (c) 2009 Helmut Merz - helmutm@cy55.de
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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#
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"""
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IPublishTraverse adapter that checks the 'Accept' header.
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$Id$
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"""
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from zope.app.container.traversal import ItemTraverser
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from zope import component
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jsonMimeTypes = ('application/json',)
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def isJSONRequest(request):
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return request.get('HTTP_ACCEPT').split(';', 1)[0] in jsonMimeTypes
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#return request.get('CONTENT_TYPE') in jsonMimeTypes
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class CheckJSONTraverser(ItemTraverser):
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def getChild(self, name):
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# may be overwritten by subclass
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return self.context.get(name)
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def publishTraverse(self, request, name):
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if isJSONRequest(request):
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return self.jsonTraverse(request, name)
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return self.defaultTraverse(request, name)
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def jsonTraverse(self, request, name):
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method = self.request['REQUEST_METHOD']
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child = self.getChild(name)
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print '*** traversing', method, self.context, name, child
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if self.getTraversalStack():
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if child is None:
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raise AttributeError(name)
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return child
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if child is None:
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if method == 'PUT':
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view = component.getMultiAdapter((self.context, request), name='json')
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return view.create(name)
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raise AttributeError(name)
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view = component.getMultiAdapter((child, request), name='json')
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if method == 'PUT':
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return view.put()
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return view.get()
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def defaultTraverse(self, request, name):
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return super(CheckJSONTraverser, self).publishTraverse(request, name)
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def browserDefault(self, request):
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if self.isJSONRequest(request):
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return self.context, ('@@json',)
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return super(CheckJSONTraverser, self).browserDefault(request)
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def getTraversalStack(self):
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return self.request['TraversalRequestNameStack']
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