| 1234567891011121314151617181920212223242526272829303132333435 |
- def deconstructible(*args, **kwargs):
- """
- Class decorator that allow the decorated class to be serialized
- by the migrations subsystem.
- Accepts an optional kwarg `path` to specify the import path.
- """
- path = kwargs.pop('path', None)
- def decorator(klass):
- def __new__(cls, *args, **kwargs):
- # We capture the arguments to make returning them trivial
- obj = super(klass, cls).__new__(cls)
- obj._constructor_args = (args, kwargs)
- return obj
- def deconstruct(obj):
- """
- Returns a 3-tuple of class import path, positional arguments,
- and keyword arguments.
- """
- return (
- path or '%s.%s' % (obj.__class__.__module__, obj.__class__.__name__),
- obj._constructor_args[0],
- obj._constructor_args[1],
- )
- klass.__new__ = staticmethod(__new__)
- klass.deconstruct = deconstruct
- return klass
- if not args:
- return decorator
- return decorator(*args, **kwargs)
|
