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63 lines
1.9 KiB
Python
63 lines
1.9 KiB
Python
"""Catalog bundles example."""
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import dependency_injector as di
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import services
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import views
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# Declaring services catalog:
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class Services(di.DeclarativeCatalog):
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"""Example catalog of service providers."""
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users = di.Factory(services.UsersService)
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""":type: di.Provider -> services.UsersService"""
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auth = di.Factory(services.AuthService)
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""":type: di.Provider -> services.AuthService"""
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photos = di.Factory(services.PhotosService)
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""":type: di.Provider -> services.PhotosService"""
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# Declaring views catalog:
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class Views(di.DeclarativeCatalog):
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"""Example catalog of web views."""
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auth = di.Factory(views.AuthView,
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services=Services.Bundle(Services.users,
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Services.auth))
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""":type: di.Provider -> views.AuthView"""
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photos = di.Factory(views.PhotosView,
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services=Services.Bundle(Services.users,
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Services.photos))
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""":type: di.Provider -> views.PhotosView"""
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# Creating example views:
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auth_view = Views.auth()
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photos_view = Views.photos()
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print auth_view.services # prints: <__main__.Services.Bundle(users, auth)>
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print photos_view.services # prints <__main__.Services.Bundle(photos, users)>
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# Making some asserts:
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assert auth_view.services.users is Services.users
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assert auth_view.services.auth is Services.auth
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try:
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auth_view.services.photos
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except di.Error:
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# `photos` service provider is not in scope of `auth_view` services bundle,
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# so `di.Error` will be raised.
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pass
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assert photos_view.services.users is Services.users
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assert photos_view.services.photos is Services.photos
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try:
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photos_view.services.auth
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except di.Error as exception:
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# `auth` service provider is not in scope of `photo_processing_view`
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# services bundle, so `di.Error` will be raised.
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pass
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