index.rst

Decoupled

wired lets you register different flavors of a thing. Above we had a Greeter and a FrenchGreeter. This pattern is useful when making an extensible application: Other packages can add flavors of things that match in custom circumstances.

In this sample we change the application from a single file into a package. In decoupled/__init__.py we make the "default" application. It only knows about Customer and Greeter. In custom.py we simulate an installed add-on package which adds FrenchCustomer and FrenchGreeter. custom.py has a setup function which wires itself up.

This application's protocol is:

• If your package has a setup function at the top level...
• ..then we'll call it, passing the registry and the settings

Same functionality as the context, but simulating an add-on package.

Code

__init__.py

__init.py

custom.py

custom.py