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42 lines
1.3 KiB
ReStructuredText
42 lines
1.3 KiB
ReStructuredText
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Specialization of catalogs
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--------------------------
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.. currentmodule:: dependency_injector.catalogs
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:py:class:`DeclarativeCatalog` and :py:class:`DynamicCatalog` could be
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specialized for any kind of needs via declaring its subclasses.
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One of such `builtin` features is a limitation to
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:py:class:`DeclarativeCatalog` (and :py:class:`DynamicCatalog`) provider type.
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Next example shows usage of this feature with :py:class:`DeclarativeCatalog`
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in couple with feature of :py:class:`dependency_injector.providers.Factory`
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for limitation of its provided type:
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Listing of `services.py`:
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.. literalinclude:: ../../examples/catalogs/declarative_provider_type/services.py
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:language: python
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Listing of `catalog.py`:
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.. literalinclude:: ../../examples/catalogs/declarative_provider_type/catalog.py
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:language: python
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Limitation to provider type could be used with :py:class:`DynamicCatalog`
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as well.
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Next example does the same that previous one, but use
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:py:class:`DynamicCatalog` instead of :py:class:`DeclarativeCatalog`:
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Listing of `services.py`:
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.. literalinclude:: ../../examples/catalogs/dynamic_provider_type/services.py
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:language: python
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Listing of `catalog.py`:
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.. literalinclude:: ../../examples/catalogs/dynamic_provider_type/catalog.py
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:language: python
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