> It depends on what you me by "linked into TG". For most people, > there's no need to hook into startup and shutdown.
My content management system needs to take the database tree of objects and
instantiate classes and attach them to the project root. E.g. if you have
the following structure in your CMS...
Folder(/)
Page(/welcome)
Page(/contact)
Folder(/company)
Page(/company/about)
Page(/company/positions)
Startup will attach the representitive classes to your root node, to emulate
the following structure:
class Root(...): (Folder /)
welcome = Page()
contact = Page()
company = Folder()
company.about = Page()
company.positions = Page()
My content.controllers module defines the following, allowing CMS projects to
use content.controllers.RootController in place of
turbogears.controllers.RootController. This is nessicary to get the root to
have the properties of a Folder CMS object, and to create the root tree.
def __descend(self, base, root, path = '/'):
for atom in root.Children:
# Step 1: Determine if the object already exists in our tree.
if hasattr(base, atom.Name):
raise Exception, "Object by the name %s already exists!" % atom.Name
continue
# Step 2: Load the correct controller module.
className = atom.__class__.__name__
moduleClass = getattr(content.controllers, className)
# Step 3: Initialize controller and place in our document tree.
classInstance = moduleClass(atom.id, "%s%s/" % (path, atom.Name))
setattr(base, atom.Name.replace('-', '_'), classInstance)
# Step 4: Descend into children nodes.
if len(atom.Children) > 0:
self._descend(classInstance, atom)
class RootController(Folder, controllers.RootController):
def __init__(self):
Folder.__init__(base=self, root=1, path="/")
root = content.model.Atom.get(1)
__descend(self, root)
I was wary to override __init__ on the root controller, but it seems to have
had no negative impact.
- Matthew
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