Yeah, Mustaha! Sometimes I think I'm a little stupid, jejejeje, I have in front of my nose but I don't see it I was solved the problem adding a y: type expression and then subclass the PythonExpr with the __init__ method modified to change the expression Too much difficult to do the job in an acceptable way BUT!!! If you go to usr/lib/zope<version>/lib/python/zope/tales/tales.py and change the 592 and 593: 591 else: 592 type = "standard" 593 expr = expression to else: if expression.find('${') > -1: type = "python" expr = "path(path('string:%s'))" % expression else: type = "standard" expr = expression then you could use expressions like this path/to/render/${with/some/variable}/and/the/rest/of/the/path I think it's an acceptable change to the code for the job it does I don't know if Zope people will introduce this change but I think if not they will be wrong But they are absolute free to do what they want to do, don't misunderstand me, please 2008/8/12 mustapha <mustapha@headnet.dk>
I'm not sure I get what you want to do.
It is not the page template that decides about the expression but the engine as Philpp explained before.
anyway, I think you are looking for the "compile" method of the ExpressionEngine class (look in zope/tales/tales.py). It's there where the expressions are parsed.
HTH
Garito wrote:
Yes, it's ok but I can save n variable definitions with 4 lines of code in 1 point Seems quite interesting for me
Could someone point me were the page template decides if the expression is a standard, string, python, etc one, please? ;)
2008/8/11 Philipp von Weitershausen <philipp@weitershausen.de <mailto:philipp@weitershausen.de>>
Garito wrote: > Considere this case: > > I have the sking value in the variable at args/Yanged/Skin > > How can I do the equivalent to > >
args/Yanged/raiz/Skins/${args/Yanged/Skin}/arbolYanged.css/absolute_url
> > ? > > In the python way it will be: > > path(path('string:' + >
'args/Yanged/raiz/Skins/${args/Yanged/Skin}/arbolYanged.css/absolute_url'))
> > That's returns the expected value but I can't see how to do with
your
> propossed way
<a tal:define="skin args/Yanged/Skin; file args/Yanged/raiz/Skins/?skin/arbolYanged.css" tal:attributes="href file/absolute_url">
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