[Zope] acces to file properties on a precondition - WILL SUMMARIZE

[Didier Georgieff]

Hello,

Just trying to test the new (?) policy for writing more how-tos and 
summarized text for the community and see the right (tm) to do it ;-
)

 - I have a subclassed file (with some more properties like 
'approved')

 - I want to use the precondition to check if the file is approved 
before allowing the donwload

 - i have a dtml-method for doing it and all is fine __exept__ that the 
context of this script seems to be the container and not the file.

The precondition method aquire the property ('approved') from the 
container (folder) and __not__ from the file.

I tried to use lotta <dtml-with>, some aq_explicit, without luck.


I also send a mail from the precondition (with the REQUEST and 
some id/title as informations) for debugging, and it shows that 
__everything__ comes from the container.


So, I tried to see where is the problem with an external method 
(stolen from Dieter)

def baseHasAttr(object,attrname):
    obj=3D getattr(object,aq_base,object)
    return hasattr(obj,attrname)

and calling <dtml-if "baseHasAttr(this(),'approved')> 
from the precondition script.

and this test shouts : __false__ even if there __is__ an 'approved' 
property on the file object.


So i'm lost, and can't figure why i can't access the object instead of 
the container in the precondition.

Is it because of a wrong syntax ?
Did i missed some aquisition trick ?
Do this fails because it's derived from file ?

Any help welcome, and .... I will summarize

--
Didier Georgieff
D=E9l=E9gation Interservice pour le D=E9veloppement du SIT67 
t=E9l : 03.88.76.78.35 - fax : 03.88.76.78.34
email : didier.georgieff@agriculture.gouv.fr