[Zope3-Users] Using global utilities when creating an global utility

[David Pratt]

Hi Jan-Wijbrand, you may wish to look at z3c.configurator since this may 
help with the issue you are having. It seems to solve the issue of 
configuration with that depends on the need for other things to be setup 
first. The doc test explains its capabilities.

Regards,
David

Jan-Wijbrand Kolman wrote:
> Hi,
> 
> 
> I'm trying to implement a global utility that makes use of other
> global utilities when it is created. In other words, the __init__ of
> my utility class, tries to get to other utilities.
> 
> This does not work however, as the utilities I'd like to get are not
> registered yet when my own utility is created - even if I made sure
> the registrations for the other utilities would've been performed
> before "my" utility is registered.
> 
> I tried to find the reason and I think I found it: when the zcml
> directive for a utility is read, an action object is created. Somewhat
> later in the configuration process these action objects are executed
> and the actual utility registration takes place.
> 
> It is when the action object is created that "my" utility is
> instantiated. And of course, no other actual registrations were made
> yet at that point, because no actions have been executed yet, so not
> utilities are available to make use of.
> 
> Is there a way to overcome this? (or to put it differently, why is
> "my" utility created when the action object is created and not just
> before the actual registration?)
> 
> 
> kind regards,
> jw
>