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= 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 Délégation Interservice pour le Développement du SIT67 tél : 03.88.76.78.35 - fax : 03.88.76.78.34 email : didier.georgieff@agriculture.gouv.fr