Re: [Zope-dev] Setting vars in expression eval() namespace
Julio Maia wrote:
Hi,
I'm trying to create a tag to evaluate the expression passed to it,
adding in the expression eval namespace a variable that contains
the result of dtml processing of the tag's block. For instance, the
following construct:
dtml-bvar "foo(a=1)" var="block"
some text dtml-var "1+2"
/dtml-bvar
would invoke the expression "foo(a=1)" with a variable named 'block'
set to 'some text 3' in the expression's namespace (btw, is it
possible to achieve this using regular dtml?).
This may be too simple example, but how about:
dtml-var "foo(a=1, block=('some text %s' % (1+2)))"
--
Steve Alexander
Software Engineer
Cat-Box limited
http://www.cat-box.net
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Re: [Zope-dev] Setting vars in expression eval() namespace
On Wed, Feb 21, 2001 at 10:53:54PM +, Steve Alexander wrote:
Julio Maia wrote:
This is not going to be handy once the block is composed by a large dtml
block. I wonder if dtml-var shouldn't support the syntax I've described
above.
I suggest instead using a PythonScript, and using the DTML class that you
can import from the Products.PythonScripts.standard module.
You can use this to render DTML on the fly, as you wish.
I guess it would be better to allow constructs as:
dtml-var "table('main','col')"
dtml-var "font('standard')"Some text/dtml-var
/dtml-var
Where 'table' and 'font' are PythonScripts that return the implicit blocks passed to
them (these blocks may have a default variable name in the expression's namespaces)
enclosed by the correspondent html blocks, with the format ('main, 'standard') mapped
to html attributes/values using some dictionaries. This could help to separate logic
and presentation in dtml code with a minor syntax addition.
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Re: [Zope-dev] Setting vars in expression eval() namespace
Julio Maia wrote: This is not going to be handy once the block is composed by a large dtml block. I wonder if dtml-var shouldn't support the syntax I've described above. I suggest instead using a PythonScript, and using the DTML class that you can import from the Products.PythonScripts.standard module. You can use this to render DTML on the fly, as you wish. -- Steve Alexander Software Engineer Cat-Box limited http://www.cat-box.net ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] Setting vars in expression eval() namespace
On Wed, Feb 21, 2001 at 10:24:57PM +, Steve Alexander wrote:
Julio Maia wrote:
Hi,
I'm trying to create a tag to evaluate the expression passed to it,
adding in the expression eval namespace a variable that contains
the result of dtml processing of the tag's block. For instance, the
following construct:
dtml-bvar "foo(a=1)" var="block"
some text dtml-var "1+2"
/dtml-bvar
would invoke the expression "foo(a=1)" with a variable named 'block'
set to 'some text 3' in the expression's namespace (btw, is it
possible to achieve this using regular dtml?).
This may be too simple example, but how about:
dtml-var "foo(a=1, block=('some text %s' % (1+2)))"
This is not going to be handy once the block is composed by a large dtml block. I
wonder if dtml-var shouldn't support the syntax I've described above.
--
Steve Alexander
Software Engineer
Cat-Box limited
http://www.cat-box.net
___
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** No cross posts or HTML encoding! **
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Re: [Zope-dev] Setting vars in expression eval() namespace
Julio Maia writes: I'm trying to create a tag to evaluate the expression passed to it, adding in the expression eval namespace a variable that contains the result of dtml processing of the tag's block. For instance, the following construct: dtml-bvar "foo(a=1)" var="block" some text dtml-var "1+2" /dtml-bvar would invoke the expression "foo(a=1)" with a variable named 'block' set to 'some text 3' in the expression's namespace (btw, is it possible to achieve this using regular dtml?). What a construction! I do not like it. However, I couldn't find a way to set a variable in the namespace used in the evaluation of the expression. I've tried to insert an entry in the mappings passed to the expression eval() method as follows: Push a new mapping onto the namespace (with its "push" method). Do not forget, to pop it after your tag. Dieter ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
