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Project Description

An alternate implementation of the repoze.bfg.interfaces.ITraverserFactory (a “traverser”) which allows you to register an adapter factory for the type or interface(s) of objects encountered during traversal. This is a generalization of the repoze.bfg.traversalwrapper package which automatically wraps each traversed object into a location-aware proxy.

To enable this custom traverser factory, you need to add a dependency on repoze.bfg.traversaladapter to your application and replace the default traverser factory in the configure.zcml configuration file like this:


Given a simple factory for adapters for a model class mymodule.Foo defined in the module mymodule like this

def foo_factory(foo, parent, name):
    return FooAdapter(foo, parent, name)

you could then register foo_factory as a traversal adapter factory as follows:


If Foo was implementing the interface mymodule.IFoo, the following registration would also work:


During traversal of your repoze.bfg application, each object of type Foo will then automatically be wrapped in a FooAdapter instance.

Note that the registered factory always gets the current model object, its parent and its name passed as arguments. If your FooAdapter class was set up to receive a Foo instance, a parent object, and a name string in its constructor like so

class FooAdapter(object):
    def __init__(self, foo, parent, name): = foo
        self.parent = parent = name

you could register the adapter class itself as the adapter factory.

See the repoze.bfg.traversaladapter.tests.TraversalAdapterTests module for further examples.

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File Name & Checksum SHA256 Checksum Help Version File Type Upload Date
repoze.bfg.traversaladapter-0.1.tar.gz (5.9 kB) Copy SHA256 Checksum SHA256 Source Dec 1, 2009

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