[Zope] [newbie] Property with <dtml-var> in it's value

[Stefan Mallepell]

Hi Dieter

I will try this, but unfortunately I don't have any time today.

Thank you for your help.
Stefan

----- Original Message -----
From: "Dieter Maurer" <dieter@handshake.de>
To: "Stefan Mallepell" <steve@syso.ch>
Cc: <zope@zope.org>
Sent: Thursday, April 19, 2001 8:03 PM
Subject: Re: [Zope] [newbie] Property with <dtml-var> in it's value


> Stefan Mallepell writes:
>  > "A" is the object-instance with a
>  >      property "l" which contains 'http://www.externalserver.org' and
the id
>  > 'externalserver'
>  > "B" is another object-instance with a
>  >      property "c" which contains 'This is text with some links. The
links to
>  > the *externalserver* can be in the middle of the text.'
>  >
>  > In my index_html I show "c" an would like to generate a proper "a href"
>  > around *externalserver* ...
> You have 3 problems - all solvable:
>
>  1. locate the ranges in "c" to be replaced by "a href=..."
>  2. find the link for an id ("externalserver" in your example)
>  3. insert the links into "c"
>
>
> For 1. and 3. you would use Python's "re" module (regular expressions),
> more precisly, the "sub" method (for "substitute"). You find documentation
> on "re" in the Python library documentation (--> www.python.org).
>
> As it is not too difficult to create long running regular expressions,
> "re" was considered too dangerous to expose it to DTML or
> Python Script. Thus, you will either need an External Method
> or learn how to make additional modules accessible from
> Python Script (--> searchable mailing list archives).
>
> If you have an "id" and you want to get the corresponding
> object, you can use "_.getitem(id)". Thus, if "id" contains
> "externalserver", then "_.getitem(id).l" will be
> equivalent to "externalserver.l", the "l" attribute of "externalserver".
> This solves 2.
>
> Dieter
>
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