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https://github.com/ets-labs/python-dependency-injector.git
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Refactor aiohttp tutorial secion: Make the search work
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Roman Mogylatov
parent
b5c4738c7f
commit
b474b391af
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@ -448,7 +448,7 @@ Now it's time to add the ``SearchService``. It will:
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Create ``services.py`` module in the ``giphynavigator`` package:
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.. code-block:: bash
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:emphasize-lines: 7
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:emphasize-lines: 8
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./
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├── giphynavigator/
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@ -456,9 +456,10 @@ Create ``services.py`` module in the ``giphynavigator`` package:
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│ ├── application.py
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│ ├── containers.py
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│ ├── giphy.py
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│ ├── services.py
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│ └── views.py
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│ ├── handlers.py
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│ └── services.py
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├── venv/
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├── config.yml
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└── requirements.txt
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and put next into it:
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@ -484,27 +485,22 @@ and put next into it:
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return [{'url': gif['url']} for gif in result['data']]
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The ``SearchService`` has a dependency on the ``GiphyClient``. This dependency will be injected.
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Let's add ``SearchService`` to the container.
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The ``SearchService`` has a dependency on the ``GiphyClient``. This dependency will be
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injected when we add ``SearchService`` to the container.
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Edit ``containers.py``:
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.. code-block:: python
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:emphasize-lines: 7,23-26
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:emphasize-lines: 5,18-21
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"""Application containers module."""
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"""Containers module."""
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from dependency_injector import containers, providers
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from dependency_injector.ext import aiohttp
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from aiohttp import web
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from . import giphy, services, views
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from . import giphy, services
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class ApplicationContainer(containers.DeclarativeContainer):
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"""Application container."""
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app = aiohttp.Application(web.Application)
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class Container(containers.DeclarativeContainer):
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config = providers.Configuration()
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@ -519,31 +515,31 @@ Edit ``containers.py``:
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giphy_client=giphy_client,
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)
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index_view = aiohttp.View(views.index)
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The search service is ready. In the next section we're going to make it work.
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The search service is ready. In next section we're going to put it to work.
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Make the search work
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--------------------
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Now we are ready to make the search work. Let's use the ``SearchService`` in the ``index`` view.
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Now we are ready to put the search into work. Let's inject ``SearchService`` into
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the ``index`` handler. We will use :ref:`wiring` feature.
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Edit ``views.py``:
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Edit ``handlers.py``:
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.. code-block:: python
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:emphasize-lines: 5,8-11,15
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:emphasize-lines: 4-7,10-13,17
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"""Handlers module."""
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from aiohttp import web
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from dependency_injector.wiring import Provide
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from .services import SearchService
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from .containers import Container
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async def index(
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request: web.Request,
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search_service: SearchService,
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search_service: SearchService = Provide[Container.search_service],
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) -> web.Response:
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query = request.query.get('query', 'Dependency Injector')
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limit = int(request.query.get('limit', 10))
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@ -558,44 +554,35 @@ Edit ``views.py``:
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},
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)
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Now let's inject the ``SearchService`` dependency into the ``index`` view.
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To make the injection work we need to wire the container instance with the ``handlers`` module.
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This needs to be done once. After it's done we can use ``Provide`` markers to specify as many
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injections as needed for any handler.
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Edit ``containers.py``:
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Edit ``application.py``:
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.. code-block:: python
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:emphasize-lines: 28-31
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:emphasize-lines: 13
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"""Application containers module."""
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"""Application module."""
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from dependency_injector import containers, providers
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from dependency_injector.ext import aiohttp
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from aiohttp import web
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from . import giphy, services, views
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from .containers import Container
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from . import handlers
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class ApplicationContainer(containers.DeclarativeContainer):
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"""Application container."""
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def create_app() -> web.Application:
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container = Container()
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container.config.from_yaml('config.yml')
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container.config.giphy.api_key.from_env('GIPHY_API_KEY')
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container.wire(modules=[handlers])
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app = aiohttp.Application(web.Application)
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config = providers.Configuration()
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giphy_client = providers.Factory(
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giphy.GiphyClient,
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api_key=config.giphy.api_key,
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timeout=config.giphy.request_timeout,
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)
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search_service = providers.Factory(
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services.SearchService,
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giphy_client=giphy_client,
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)
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index_view = aiohttp.View(
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views.index,
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search_service=search_service,
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)
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app = web.Application()
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app.container = container
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app.add_routes([
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web.get('/', handlers.index),
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])
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return app
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Make sure the app is running or use:
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@ -614,30 +601,30 @@ You should see:
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.. code-block:: json
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HTTP/1.1 200 OK
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Content-Length: 850
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Content-Length: 492
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Content-Type: application/json; charset=utf-8
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Date: Wed, 29 Jul 2020 22:22:55 GMT
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Date: Fri, 09 Oct 2020 01:35:48 GMT
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Server: Python/3.8 aiohttp/3.6.2
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{
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"gifs": [
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{
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"url": "https://giphy.com/gifs/dollyparton-3xIVVMnZfG3KQ9v4Ye"
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},
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{
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"url": "https://giphy.com/gifs/tennistv-unbelievable-disbelief-cant-believe-UWWJnhHHbpGvZOapEh"
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},
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{
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"url": "https://giphy.com/gifs/discoverychannel-nugget-gold-rush-rick-ness-KGGPIlnC4hr4u2s3pY"
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},
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{
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"url": "https://giphy.com/gifs/primevideoin-ll1hyBS2IrUPLE0E71"
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"url": "https://giphy.com/gifs/soulpancake-wow-work-xUe4HVXTPi0wQ2OAJC"
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},
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{
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"url": "https://giphy.com/gifs/jackman-works-jackmanworks-l4pTgQoCrmXq8Txlu"
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},
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{
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"url": "https://giphy.com/gifs/cat-massage-at-work-l46CzMaOlJXAFuO3u"
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},
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{
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"url": "https://giphy.com/gifs/everwhatproductions-fun-christmas-3oxHQCI8tKXoeW4IBq"
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},
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"url": "https://giphy.com/gifs/readingrainbow-teamwork-levar-burton-reading-rainbow-3o7qE1EaTWLQGDSabK"
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}
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],
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"limit": 10,
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"limit": 5,
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"query": "wow,it works"
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}
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@ -733,7 +733,7 @@ Edit ``views.py``:
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To make the injection work we need to wire the container instance with the ``views`` module.
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This needs to be done once. After it's done we can use ``Provide`` markers to specify as many
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injections as needed for any view inside the module.
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injections as needed for any view.
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Edit ``application.py``:
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