- Original Message -
From: "Eric L. Walstad" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Tuesday, June 13, 2000 12:30 AM
Subject: [Zope] ZClass newbie problem...
> I'm stuck. I would like to build a "shiny new ZClass" that has the
following
> structure:
>
> WebSimProduct
> WebSim Class
> 'Properties' Property Sheet
> string RunID
> Calc Class Object
> 'Properties' Property Sheet
> PathToInputFile
> PathToWxFolder
> Results Class Object
> 'Properties' Property Sheet
> float gashtg
> float elchtg
> float elcclg
> float euihtg
> float euiclg
>
> I haven't seen anything in the Zope documentation on using Zclass
instances
> as members of a super class. In other programming languages I would
> instantiate default objects when the WebSim class is initialized. That
way,
> to use a WebSim object, all I would need to do is instantiate one, then
fill
> the properties of the automatiacally-created Calc object and Results
object.
> However, I'm not sure how to build these default objects in Zope.
>
> My next question is: do I have to build a bunch of products (one for the
> Calc class and one for the Results class, for example)? I can imagine
this
> would result in a huge number of products under the control panel if this
is
> the case. I would like to have just a WebSim product and have all the
other
> classes defined within this product. Does Zope work this way? If not,
how
> is this class structure (or one similar) achieved?
You can certainly have multiple ZClasses within a single Product. Some
people recommend not nesting ZClasses, because when you do so you can only
use the nested classes within the top level class... ZClasses can't be
cut-and-pasted, so you're stuck with that hierarchy. If you're sure you only
want to add those classes in that particular way, you can pretty easily do
what you want.
In the WebSim_add method, you would do something like:
this line is already there
...set your properties here...
...set your Results properties here...
HTH,
Kevin
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