[Zope] Python Script & file.filename

[Milos Prudek]

> If it were string it would never work. It would never add an image. But 
> it refuses to add an image only if there is already an image file 
> "ad_title".
> 
> 

Now I'm a little bit further to understanding this problem. It's about 
namespace order of search.

Since the same name "ad_title" is used for both form variable and 
resulting image, it means a clash. When the image is already there, the 
"if ad.filename" actually queries the image file in ZODB - because the 
namespace search order says that ZODB comes before REQUEST.form. And the 
image file has no attribute called filename.

I know two ways to solve it. Change form name, or put images in 
different folder.

I also know how to solve it without renaming of moving images but in 
pure DTML with Python Script dropped. <dtml-with REQUEST>.

However I would be interested to know (for the sake of the argument) if 
there is a way to solve it without renaming of moving images, and in 
Python Script.

I was trying to qualify ad_title in Python like this:

if context.REQUEST.ad_title.filename:

or

if context.REQUEST['ad_title.filename']:

but it would not work. Why?

-- 
Milos Prudek