I'm trying to read python/Products/PageTemplates/Expressions.py and python/OFS/Traversable.py but I am at a loss for the definition of has(). I've been grep-ping all over the place trying to find it, with no luck. Is it a Python 2.1 thing? I've tried it in a test script, but I did not succeed. I need a whack with the clue stick. Thank you. --kyler
Kyler B. Laird wrote:
I'm trying to read python/Products/PageTemplates/Expressions.py and python/OFS/Traversable.py but I am at a loss for the definition of has().
Just add "has=hasattr" right after "get=getattr" (line 145 of Traversable.py). Sorry, Evan @ Zope
Evan Simpson wrote:
Kyler B. Laird wrote:
I'm trying to read python/Products/PageTemplates/Expressions.py and python/OFS/Traversable.py but I am at a loss for the definition of has().
Just add "has=hasattr" right after "get=getattr" (line 145 of Traversable.py).
I think he wanted to know where it was defined, not where he can define it. Kyler, take a look at the definition for the restrictedTraverse method in Expressions.py: def restrictedTraverse(self, path, securityManager, get=getattr, has=hasattr, N=None, M=[]): That's where it's defined. -Michel
On Wed, 05 Sep 2001 10:32:12 -0700 you wrote:
I'm trying to read python/Products/PageTemplates/Expressions.py and python/OFS/Traversable.py but I am at a loss for the definition of has().
Just add "has=hasattr" right after "get=getattr" (line 145 of Traversable.py).
I think he wanted to know where it was defined, not where he can define it.
Well...it's a little of each that I sought.
Kyler, take a look at the definition for the restrictedTraverse method in Expressions.py:
def restrictedTraverse(self, path, securityManager, get=getattr, has=hasattr, N=None, M=[]):
That's where it's defined.
That makes sense, and I did miss that for Expressions.py. (We had not noticed a problem with it, but it showed up when I started searching for "has()".) Unfortunately, the same does not appear to be the case for Traversable.py. I do not see it being defined at all, but Evan's suggestion to patch in "has=hasattr" should do the trick. Is there any reason that I should *not* define it like this? (I'm assuming that this is just a temporary kludge until a fix comes out.) A quick grep of the code does not reveal any calls to unrestrictedTraverse() that include a definition for "has". Thank you for the help! --kyler
participants (3)
-
Evan Simpson -
Kyler B. Laird -
Michel Pelletier