[Zope] conceptual problem with acquisition

[Oliver Frommel]

> include a PythonScript in your zclass (or somewhere else) with the following
> code (name: findlogo; standard bindings):
> 
> try: 
>     getattr(context.pics, 'logo') # if logo is the name of the picture
>     logo = context.pics.logo      
> except AttributeError:
>     logo = context.<fallbackdirectory>.pics.logo # in which fallback directory
> is your rootdir
> 
> return logo
> 
>

yes, thank you very much!
However I changed the PythonScript a bit to 
a) take a variable
b) operate on strings, i.e. also return a string


PythonScript findimage, parameter "image":

try: 
    getattr(context.pic, image)
    image = "pics/" + image 
except AttributeError:
    image = "dir/pics/" + image
return image

I call it from a DTML method like that:

<img src="<dtml-var "findimage('logo.gif')">"> 

yes, this is not nice, and I am not really content with it ..


how could I e.g. make your example work when using an image with a "normal"
name, i.e. period and extension. I think I can hardly make all Zope end users
(Designers, Editors ..) make switching from that to underscore naming!

>     getattr(context.pics, 'logo') # if logo is the name of the picture
>     logo = context.pics.logo      

thanks for your help
--Oliver