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41 lines
1.4 KiB
ReStructuredText
41 lines
1.4 KiB
ReStructuredText
Overriding of containers
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------------------------
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.. currentmodule:: dependency_injector.containers
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Containers can be overridden by other containers. This, actually, means that
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all of the providers from overriding container will override providers with
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the same names in overridden container.
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There are two ways to override :py:class:`DeclarativeContainer` with another
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container:
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- Use :py:meth:`DeclarativeContainer.override` method.
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- Use :py:func:`override` class decorator.
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Example of overriding container using :py:meth:`DeclarativeContainer.override`
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method:
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.. literalinclude:: ../../examples/containers/override_declarative.py
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:language: python
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:linenos:
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Example of overriding container using :py:func:`override` decorator:
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.. literalinclude:: ../../examples/containers/override_declarative_decorator.py
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:language: python
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:linenos:
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Also there are several useful :py:class:`DeclarativeContainer` methods and
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properties that help to work with container overridings:
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- :py:attr:`DeclarativeContainer.overridden` - tuple of all overriding
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containers.
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- :py:meth:`DeclarativeContainer.reset_last_overriding()` - reset last
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overriding provider for each container providers.
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- :py:meth:`DeclarativeContainer.reset_override()` - reset all overridings
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for each container providers.
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:py:class:`DynamicContainer` has exactly the same functionality, except of
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:py:func:`override` decorator.
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