ets-labs/python-dependency-injector
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Updating examples

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Roman Mogilatov 2015-03-31 18:00:11 +03:00
parent 0db7a67ef2
commit b5870e9a57
2 changed files with 30 additions and 19 deletions
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34
README.md
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@ -127,7 +127,20 @@ assert object_a_1.database is object_a_2.database
assert object_a_1.get_one() == object_a_2.get_one() == 1 assert object_a_1.get_one() == object_a_2.get_one() == 1
``` ```
Also injections could be used by any callable with `@inject` decorator: ### Catalogs
Catalogs are named set of providers.
## Advanced usage
Below you can find some variants of advanced usage of `Objects`.
### Inject decorator
`@inject` decorator could be used for patching any callable with injection.
Any Python object will be injected 'as is', except `Objects` providers,
that will be called to provide injectable value.
```python ```python
"""`@inject` decorator example.""" """`@inject` decorator example."""
@ -138,25 +151,24 @@ from objects.injections import KwArg
from objects.injections import inject from objects.injections import inject
object_a = NewInstance(object) new_object = NewInstance(object)
object_b = NewInstance(object)
@inject(KwArg('a', object_a)) @inject(KwArg('object_a', new_object))
@inject(KwArg('b', object_b)) @inject(KwArg('some_setting', 1334))
def example_callback(a, b): def example_callback(object_a, some_setting):
"""This function has dependencies on object a and b. """This function has dependencies on object a and b.
Dependencies are injected using `@inject` decorator. Dependencies are injected using `@inject` decorator.
""" """
assert a is not b assert isinstance(object_a, object)
assert isinstance(a, object) assert some_setting == 1334
assert isinstance(b, object)
example_callback()
example_callback() example_callback()
``` ```
### Catalogs ### Overriding providers
Catalogs are named set of providers. ### Overriding catalogs

15
examples/readme/inject_decorator.py
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@ -6,20 +6,19 @@ from objects.injections import KwArg
from objects.injections import inject from objects.injections import inject
object_a = NewInstance(object) new_object = NewInstance(object)
object_b = NewInstance(object)
@inject(KwArg('a', object_a)) @inject(KwArg('object_a', new_object))
@inject(KwArg('b', object_b)) @inject(KwArg('some_setting', 1334))
def example_callback(a, b): def example_callback(object_a, some_setting):
"""This function has dependencies on object a and b. """This function has dependencies on object a and b.
Dependencies are injected using `@inject` decorator. Dependencies are injected using `@inject` decorator.
""" """
assert a is not b assert isinstance(object_a, object)
assert isinstance(a, object) assert some_setting == 1334
assert isinstance(b, object)
example_callback() example_callback()
example_callback()