[Zope] creating instances of ZDiscussions programatically

Dennis Allison allison@sumeru.stanford.EDU
Fri, 26 Jul 2002 12:52:35 -0700 (PDT)

A later posting contains all the details...  The ZDiscussions product does
not inherit from ObjectManager--and I suspect it should.  Is this
my problem?  I've looked at the implementation and am passing everything 
that appears to be needed...


On Fri, 26 Jul 2002, Dieter Maurer wrote:

> Dennis Allison writes:
>  > I am having difficulty creating instances of ZDiscussions programatically.
>  > Creating instances from the ZMI works fine.  But creating instances as an 
>  > action and having it work automagically has proven to be a problem. 
> Do you already understand how creation from the ZMI works?
>   You have a form that collects parameters for the instance.
>   The form then calls an action via the Web.
>   ZPublisher automatically provides the parameters as needed.
> When you want to do this programmatically, you simply call the
> action with the correct parameters. It looks like:
>        your_destination.manage_addProduct[your_product].the_action(parameters)
> "your_destination" is the ObjectManager (usually a folder) where the
> new instance shoult be created.
> "your_product" is the product which contains your class
> (probably "ZDiscussions" in your case).
> "the_action" is the action that would also be called by the ZMI.
> You need to know which parameters the action expects.
> This may be documented. If it is a DTML object, it will
> be "client" and "REQUEST". In the above case,
> "client" would be "your_destination.manage_addProduct[your_product]"
> and "REQUEST" the request object.
> When it is a DTML object (which is the default for ZClasses),
> then it may be a good idea to look into its definition.
> This may show you, how to get a bit leaner and more efficient code.
> Dieter