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annotate PageTemplates/PathIterator.py @ 1028:16498e77e3ff

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allow overiding of the index args roundup/cgi/templating.py
author Richard Jones <richard@users.sourceforge.net>
date Tue, 03 Sep 2002 07:33:01 +0000
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children
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1 ##############################################################################
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2 #
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3 # Copyright (c) 2001 Zope Corporation and Contributors. All Rights Reserved.
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4 #
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5 # This software is subject to the provisions of the Zope Public License,
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6 # Version 2.0 (ZPL). A copy of the ZPL should accompany this distribution.
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7 # THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
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8 # WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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9 # WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
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10 # FOR A PARTICULAR PURPOSE
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11 #
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12 ##############################################################################
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13
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14 """Path Iterator
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16 A TALES Iterator with the ability to use first() and last() on
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17 subpaths of elements.
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18 """
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19
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20 __version__='$Revision: 1.1 $'[11:-2]
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21
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22 import TALES
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23 from Expressions import restrictedTraverse, Undefs, getSecurityManager
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24 from string import split
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25
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26 class Iterator(TALES.Iterator):
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27 def __bobo_traverse__(self, REQUEST, name):
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28 if name in ('first', 'last'):
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29 path = REQUEST['TraversalRequestNameStack']
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30 names = list(path)
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31 names.reverse()
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32 path[:] = [tuple(names)]
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33 return getattr(self, name)
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34
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35 def same_part(self, name, ob1, ob2):
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36 if name is None:
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37 return ob1 == ob2
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38 if isinstance(name, type('')):
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39 name = split(name, '/')
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40 name = filter(None, name)
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41 securityManager = getSecurityManager()
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42 try:
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43 ob1 = restrictedTraverse(ob1, name, securityManager)
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44 ob2 = restrictedTraverse(ob2, name, securityManager)
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45 except Undefs:
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46 return 0
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47 return ob1 == ob2
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48
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