[Zope3-Users] Direct ZODB access in a Zope3 instance
brad at allendev.com
Wed Nov 30 21:28:22 EST 2005
At 5:01 PM -0700 11/30/05, Duncan McGreggor wrote:
>z3 utilizes a component-based approach - both in the way that it was
>built and in the way that applications are built using it. To "get a
>hold" of certain components, you use various useful functions that
>are provided in the zapi (many of which come from the components
>package). One of the most common ways of getting a hold of an object
>or object type is by interface lookup.
Ok, suppose there is a ZPT Page object located in the ZMI/ZODB in the
following folder path:
To "get ahold" of the object from within Python...by that I mean bind
a variable name to an object...you say I should use an interface
lookup. I don't get it. I've seen how to validate whether an object
implements an interface, or whether an interfaces is providedBy an
object, but I don't know how to lookup an object via an interface.
In the case of a ZPT, it implements a lot of different interfaces :
Which one would I pick to use for a lookup? And if I picked the right
one, wouldn't I get back a list of objects, rather than the specific
one I want?
I guess I'm asking if there is a function that will allow me to do this:
introText = getObject ('/SiteName/UserContent/Articles/IntroText')
From there, I'd expect to be able to rename the object, move it to a
different directory, delete it, copy it, put it inside another
object, change attributes, call methods on it, etc.
Am I misguided in wanting this? I am just wondering how to get at
user generated data, manipulate it, export it, etc. I've seen how to
get at objects in the ZODB via TALES expressions, but all I can with
that is display it, right?
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