[Zope] non static size parameter in dtml-var

[Steve Alexander]

Scott Parish wrote:
> 
> I have a dtml-var tag that is being repeated over and over inside of a dtml-in
> tag.  I would like the client to be able to custimize the maximum amount of
> text output they see, so i did something like the following:
> 
>  <dtml-var "item['title']" size="getTitleLen()">
> 
> Where getTitleLen is a method which returns an integer of how many characters
> max the title is to be.  However, when i have this dtml method rendered, i
> get the following error:
> 
>   a size attribute was used in a var tag with a non-integer value.

Looks like you'll need to patch lib/python/DocumentTemplate/DT_Var.py to
get this working.

326,328c326,331
<             except: raise 'Document Error',(
<                 '''a <code>size</code> attribute was used in a
<code>var</code>
<                 tag with a non-integer value.''')
---
>             except:
>             try: size=atoi(str(md[size]))
>             except:
>               raise 'Document Error',(
>                   '''a <code>size</code> attribute was used in a <code>var</code>
>                   tag with a non-integer value.''')   


After this patch, you can use normal numeric literals, or you can use
values from the namespace.

Here's an example:

index_html dtml-method:
----
<dtml-var standard_html_header>
<h2><dtml-var title_or_id></h2>
<p>
This is the <dtml-var id> Document.
</p>
<dtml-var "'Hello world'" size="getLen">
<dtml-var standard_html_footer>
----

getLen dtml-method:
----
<dtml-return "5">
----

--
Steve Alexander
Software Engineer
Cat-Box limited