- 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:
dtml-with "createInObjectManager..."this line is already there
dtml-with "Calc_add(_.None, _)"
...set your properties here...
dtml-with "Results_add(_.None, _)"
...set your Results properties here...
/dtml-with
/dtml-with
/dtml-with
HTH,
Kevin
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