De : zope-bounces@zope.org [mailto:zope-bounces@zope.org] De la part de Tudor Gabriel Envoyé : mercredi 13 juin 2007 01:54 À : zope@zope.org Objet : [Zope] basic python class & zope question
hi im new here , first post ... and new to zope.
i've read the manual ... and zope framework looks very promising ... i started writing a couple of templates ... and run into some basic problems like:
Problem 1. is it posible to have a python class ... defined in a script .... like class learn: def print_something(self): print 'it works'
and call it from zpt ... like <span tal:replace="learn/print_something">replace</span>?
or how can i call a method from this object ? ... i tryied with python:learn.print_something() and many different ways and i still don't get it.
i'm starting to suspect that i can use classes only as zope products .... and call from zpt ... only scripts without classes.
also do i have to set the properties/attributes of the script which contains the class ... with the methods?
because by calling learn/print_somthing i get an AttributeError ... url might be invalid etc...
Problem 2.
how can i call/return from an python script a html file which resides in some folder above the script.
i wanna call abc/index.html ... from abc/def/script.py
i tryied with the container[' index.html'[ but it doesn't return anything.
thank you for the patience and sorry for the very basic questions ... but i feel that if i understand this things ... i can really get started with zope.
Hi,
or how can i call a method from this object ? To call a method of a class, you first have to possess an instance of that class in a variable. Then, supporing the variable is lrn_instance, you can use lrn_instance/print_something or python:lrn_instance.print_something() to call it.
is it posible to have a python class ... defined in a script .... because by calling learn/print_somthing i get an AttributeError It should be possible to define a class in a script, but the script won't become that class, you will have to have that script return an instance of the class, and then you store it somewhere (a variable maybe, or a property of some other object if you want it to persist). As far as I can tell, it would probably be wiser to define the class in a Product, though.
how can i call/return from an python script a html file which resides... This behaviour is built into Zope and is called acquisition: anything defined above your context is accessible as if it were in your context, as long as it isn't obscured by something else with the same name.
The things you want to access will lose their extension, by the way: index_html.pt will become index_html, the same way that script.py becomes script
From abc/def/script.py, "context.index_html()" should give you the rendering of abc/index_html.whatever_it_is
Hope this helps, Jonathan This message contains information that may be privileged or confidential and is the property of the Capgemini Group. It is intended only for the person to whom it is addressed. If you are not the intended recipient, you are not authorized to read, print, retain, copy, disseminate, distribute, or use this message or any part thereof. If you receive this message in error, please notify the sender immediately and delete all copies of this message.