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56 lines
1.8 KiB
ReStructuredText
56 lines
1.8 KiB
ReStructuredText
Declarative containers
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----------------------
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.. currentmodule:: dependency_injector.containers
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:py:class:`DeclarativeContainer` is inversion of control container that
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could be defined in declarative manner. It should cover most of the cases
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when list of providers that would be included in container is deterministic
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(container will not change its structure in runtime).
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Declarative containers have to extend base declarative container class -
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:py:class:`dependency_injector.containers.DeclarativeContainer`.
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Declarative container's providers have to be defined like container's class
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attributes. Every provider in container has name. This name should follow
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``some_provider`` convention, that is standard naming convention for
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attribute names in Python.
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.. note::
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Declarative containers have several features that could be useful
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for some kind of operations on container's providers, please visit API
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documentation for getting full list of features -
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:py:class:`dependency_injector.containers.DeclarativeContainer`.
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Here is an simple example of defining declarative container with several
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factories:
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.. image:: /images/containers/declarative.png
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:width: 85%
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:align: center
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.. literalinclude:: ../../examples/containers/declarative.py
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:language: python
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:linenos:
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Example of declarative containers inheritance:
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.. image:: /images/containers/declarative_inheritance.png
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:width: 100%
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:align: center
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.. literalinclude:: ../../examples/containers/declarative_inheritance.py
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:language: python
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:linenos:
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Example of declarative containers's provider injections:
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.. image:: /images/containers/declarative_injections.png
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:width: 100%
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:align: center
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.. literalinclude:: ../../examples/containers/declarative_injections.py
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:language: python
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:linenos:
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