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: > > > > > > some text > > > > > > 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: > > 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 > > ___ 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 10:53:54PM +, 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:
Some text
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.
___
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 10:53:54PM +, 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:
Some text
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.
___
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 )
[Zope-dev] Setting vars in expression eval() namespace
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:
some text
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?).
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:
def __init__(self, blocks):
tname, args, section = blocks[0]
self.section = section.blocks
...
# code that sets self.blockvar as the "var" attribute
# code that sets self.expr as the tag's expression
def render(self, md):
...
d[self.blockvar] = render_blocks(self.section,md) # process the dtml block
d={}; md._push(d)
e = Eval(self.expr, expr_globals).eval(md)
return render_blocks([e],md)
But this doesn't seem to do it.
Any hints on how to make this work?
Julio
___
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 )
