Re: [Zope] Page Template help
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/zopeversion/lib/python/zope/tales/tales.py and change
the 592 and 593:
591else:
592type = standard
593expr = 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 [EMAIL PROTECTED]
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
[EMAIL PROTECTED]
mailto:[EMAIL PROTECTED]
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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Re: [Zope] Page Template help
Hi Philipp! Thank you so much for your response but in this lines is were the engine loads the possibilities but not were evaluate the current expression I would like to evaluate some condition before to load the class who resolves the expression (and witch is loaded in the code you point me) More clear? Thanks! 2008/8/11 Philipp von Weitershausen [EMAIL PROTECTED] Garito wrote: Could someone point me where the page template code decide if an expression is a path expression or a string or python one, please? I'm studying the zope page template classes and I would like to understand where this decision is taken Products.PageTemplates.Expressions.createZopeEngine(): for pt in ZopePathExpr._default_type_names: e.registerType(pt, ZopePathExpr) ZopePathExpr._default_type_names contains, among others, the name 'standard', which makes this expression type the default expression type. ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev ) -- Mis Cosas http://blogs.sistes.net/Garito Zope Smart Manager http://blogs.sistes.net/Garito/670 ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
Re: [Zope] Page Template help
--On 11. August 2008 15:48:21 +0200 Garito [EMAIL PROTECTED] wrote: Hi Philipp! Thank you so much for your response but in this lines is were the engine loads the possibilities but not were evaluate the current expression I would like to evaluate some condition before to load the class who resolves the expression (and witch is loaded in the code you point me) Sounds strange to me. Usecase? -aj pgp144f2ndoz3.pgp Description: PGP signature ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
Re: [Zope] Page Template help
Use:
/path/to/the/object/with/${some/magic/variables}/to/solve/some/paths/in/a/simplest/way
You could do that converting the path above to
python: path(path('string:' +
'/path/to/the/object/with/${some/magic/variables}/to/solve/some/paths/in/a/simplest/way'))
or in a generic way:
python: path(path('string:' + expr))
No more than 5 o 6 lines changed and a lot of code saved
2008/8/11 Andreas Jung [EMAIL PROTECTED]
--On 11. August 2008 15:48:21 +0200 Garito [EMAIL PROTECTED] wrote:
Hi Philipp!
Thank you so much for your response but in this lines is were the engine
loads the possibilities but not were evaluate the current expression
I would like to evaluate some condition before to load the class who
resolves the expression (and witch is loaded in the code you point me)
Sounds strange to me. Usecase?
-aj
--
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Zope Smart Manager
http://blogs.sistes.net/Garito/670
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Re: [Zope] Page Template help
Garito wrote:
Use:
/path/to/the/object/with/${some/magic/variables}/to/solve/some/paths/in/a/simplest/way
Path expressions already support this.
tal:define=pathel some/magic/variables;
objpath/to/the/object/with/?pathel/to/solve/some/...
So basically in TALES path expressions you can say foo/?bar and the
value of the 'bar' variable will be used to traverse the next step from
'foo'.
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Re: [Zope] Page Template help
Considere this case:
I have the sking value in the variable at args/Yanged/Skin
How can I do the equivalent to
args/Yanged/raiz/Skins/${args/Yanged/Skin}/arbolYanged.css/absolute_url
?
In the python way it will be:
path(path('string:' +
'args/Yanged/raiz/Skins/${args/Yanged/Skin}/arbolYanged.css/absolute_url'))
That's returns the expected value but I can't see how to do with your
propossed way
Thanks!
2008/8/11 Philipp von Weitershausen [EMAIL PROTECTED]
Garito wrote:
Use:
/path/to/the/object/with/${some/magic/variables}/to/solve/some/paths/in/a/simplest/way
Path expressions already support this.
tal:define=pathel some/magic/variables;
objpath/to/the/object/with/?pathel/to/solve/some/...
So basically in TALES path expressions you can say foo/?bar and the
value of the 'bar' variable will be used to traverse the next step from
'foo'.
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--
Mis Cosas
http://blogs.sistes.net/Garito
Zope Smart Manager
http://blogs.sistes.net/Garito/670
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Re: [Zope] Page Template help
Finally it's possible to do what I need without the need to declare any
variable?
If not my change will be 4-6 lines of code and it's ok for me to make this
change
I only need to understand were the code decides if the expression is
standard, string or python
Could you help me?
Thanks!
2008/8/11 Garito [EMAIL PROTECTED]
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
Thanks!
2008/8/11 Philipp von Weitershausen [EMAIL PROTECTED]
Garito wrote:
Use:
/path/to/the/object/with/${some/magic/variables}/to/solve/some/paths/in/a/simplest/way
Path expressions already support this.
tal:define=pathel some/magic/variables;
objpath/to/the/object/with/?pathel/to/solve/some/...
So basically in TALES path expressions you can say foo/?bar and the
value of the 'bar' variable will be used to traverse the next step from
'foo'.
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--
Mis Cosas
http://blogs.sistes.net/Garito
Zope Smart Manager
http://blogs.sistes.net/Garito/670
--
Mis Cosas
http://blogs.sistes.net/Garito
Zope Smart Manager
http://blogs.sistes.net/Garito/670
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Re: [Zope] Page Template help
Garito wrote:
Considere this case:
I have the sking value in the variable at args/Yanged/Skin
How can I do the equivalent to
args/Yanged/raiz/Skins/${args/Yanged/Skin}/arbolYanged.css/absolute_url
?
In the python way it will be:
path(path('string:' +
'args/Yanged/raiz/Skins/${args/Yanged/Skin}/arbolYanged.css/absolute_url'))
That's returns the expected value but I can't see how to do with your
propossed way
a tal:define=skin args/Yanged/Skin;
file args/Yanged/raiz/Skins/?skin/arbolYanged.css
tal:attributes=href file/absolute_url
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Re: [Zope] Page Template help
Yes, it's ok but I can save n variable definitions with 4 lines of code in 1
point
Seems quite interesting for me
Could someone point me were the page template decides if the expression is a
standard, string, python, etc one, please? ;)
2008/8/11 Philipp von Weitershausen [EMAIL PROTECTED]
Garito wrote:
Considere this case:
I have the sking value in the variable at args/Yanged/Skin
How can I do the equivalent to
args/Yanged/raiz/Skins/${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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--
Mis Cosas
http://blogs.sistes.net/Garito
Zope Smart Manager
http://blogs.sistes.net/Garito/670
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Re: [Zope] Page Template help
Garito wrote: Finally it's possible to do what I need without the need to declare any variable? Not that I know of. If not my change will be 4-6 lines of code and it's ok for me to make this change I only need to understand were the code decides if the expression is standard, string or python I already pointed you to the code where the different expression types are registered. From there you should be able to deduce where these registrations are used. I don't know this by heart and would have to search for myself. ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
Re: [Zope] Page Template help
Sure Philipp! I'm searching for some days and I still searching but if someone else knows the point perhaps he/she accelerate me ;) Thank you so much for your interest, Philipp! 2008/8/11 Philipp von Weitershausen [EMAIL PROTECTED] Garito wrote: Finally it's possible to do what I need without the need to declare any variable? Not that I know of. If not my change will be 4-6 lines of code and it's ok for me to make this change I only need to understand were the code decides if the expression is standard, string or python I already pointed you to the code where the different expression types are registered. From there you should be able to deduce where these registrations are used. I don't know this by heart and would have to search for myself. ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev ) -- Mis Cosas http://blogs.sistes.net/Garito Zope Smart Manager http://blogs.sistes.net/Garito/670 ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
