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I have a container and I would like to combine the views of
the container objects. Does anyone have suggestions? This is rather
simple and complex at the same time. Basically, what I’m trying to do is to display a
rather complex form and I want it to consist of the objects in container.
Imagine buying a car online. Consider the following Zope
object layout: Truck Container: + + Four Runner Container: ++ Seat Options ++ Stereo Options ++ Color Options ++ Running Board Options + Sequoia Container: ++ Seat Options ++ Stereo Options ++ Color Options + ++ Tow hook Options ++ Stereo Options ++ Color Options I know only two ways to achieve this objective now, neither
which I like. 1. Create a view on the container that calls my showOptions
subroutine, which in turn calls a predefined and specific view class for each
content type. The problem is the large number of conditionals, and its
hard to add more options without modifying each class and hardcoding the
content types. def showOptions(self): “””
Return an HTML string of all of the options and selected values””” options = [] for name, child
in self.context.items():
if ISeatOptions.providedBy(child):
option = {}
option['title'] = child.name
option[‘choices’] = SeatOptions(child, self.request, self.base_url)
options.append(info)
if IColorOptions.providedBy(child):
option = {}
option['title'] = child.name
option[‘choices’] = ColorOptions(child, self.request,
self.base_url)
options.append(info) return options 2. Create a subroutine “getForm()” in each
content object, and derive all content objects from “FormOption” to
ensure they all have the “getForm()” function. Then define my
showOptions() routine. The problem with this approach is that it the
content object is not actually a typical view, and so the content object has
trouble manipulating sessions and rendering page templates (because many of the
view functions like “self.request, and self.context”, which cause
problems with the persistence required for most content objects). def getOptions(self): options = [] for name, child
in self.context.items():
if IFormOption.providedBy(child):
option = {}
option['title'] = child.name
option['modifiers'] = child.getForm(self.request)
options.append(info) return options -- David Johnson (877) 572-8324 x2200 |
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