mirror of
https://github.com/ets-labs/python-dependency-injector.git
synced 2024-11-22 01:26:51 +03:00
120 lines
3.5 KiB
ReStructuredText
120 lines
3.5 KiB
ReStructuredText
.. _fastapi-sqlalchemy-example:
|
|
|
|
FastAPI + SQLAlchemy example
|
|
============================
|
|
|
|
.. meta::
|
|
:keywords: Python,Dependency Injection,FastAPI,SQLAlchemy,Example
|
|
:description: This example demonstrates a usage of the FastAPI, SQLAlchemy, and Dependency Injector.
|
|
|
|
This example shows how to use ``Dependency Injector`` with `FastAPI <https://fastapi.tiangolo.com/>`_ and
|
|
`SQLAlchemy <https://www.sqlalchemy.org/>`_.
|
|
|
|
The source code is available on the `Github <https://github.com/ets-labs/python-dependency-injector/tree/master/examples/miniapps/fastapi-sqlalchemy>`_.
|
|
|
|
Thanks to `@ShvetsovYura <https://github.com/ShvetsovYura>`_ for providing initial example:
|
|
`FastAPI_DI_SqlAlchemy <https://github.com/ShvetsovYura/FastAPI_DI_SqlAlchemy>`_.
|
|
|
|
Application structure
|
|
---------------------
|
|
|
|
Application has next structure:
|
|
|
|
.. code-block:: bash
|
|
|
|
./
|
|
├── webapp/
|
|
│ ├── __init__.py
|
|
│ ├── application.py
|
|
│ ├── containers.py
|
|
│ ├── database.py
|
|
│ ├── endpoints.py
|
|
│ ├── models.py
|
|
│ ├── repositories.py
|
|
│ ├── services.py
|
|
│ └── tests.py
|
|
├── config.yml
|
|
├── docker-compose.yml
|
|
├── Dockerfile
|
|
└── requirements.txt
|
|
|
|
Application factory
|
|
-------------------
|
|
|
|
Application factory creates container, wires it with the ``endpoints`` module, creates
|
|
``FastAPI`` app, and setup routes.
|
|
|
|
Application factory also creates database if it does not exist.
|
|
|
|
Listing of ``webapp/application.py``:
|
|
|
|
.. literalinclude:: ../../examples/miniapps/fastapi-sqlalchemy/webapp/application.py
|
|
:language: python
|
|
|
|
Endpoints
|
|
---------
|
|
|
|
Module ``endpoints`` contains example endpoints. Endpoints have a dependency on user service.
|
|
User service is injected using :ref:`wiring` feature. See ``webapp/endpoints.py``:
|
|
|
|
.. literalinclude:: ../../examples/miniapps/fastapi-sqlalchemy/webapp/endpoints.py
|
|
:language: python
|
|
|
|
Container
|
|
---------
|
|
|
|
Declarative container wires example user service, user repository, and utility database class.
|
|
See ``webapp/containers.py``:
|
|
|
|
.. literalinclude:: ../../examples/miniapps/fastapi-sqlalchemy/webapp/containers.py
|
|
:language: python
|
|
|
|
Services
|
|
--------
|
|
|
|
Module ``services`` contains example user service. See ``webapp/services.py``:
|
|
|
|
.. literalinclude:: ../../examples/miniapps/fastapi-sqlalchemy/webapp/services.py
|
|
:language: python
|
|
|
|
Repositories
|
|
------------
|
|
|
|
Module ``repositories`` contains example user repository. See ``webapp/repositories.py``:
|
|
|
|
.. literalinclude:: ../../examples/miniapps/fastapi-sqlalchemy/webapp/repositories.py
|
|
:language: python
|
|
|
|
Models
|
|
------
|
|
|
|
Module ``models`` contains example SQLAlchemy user model. See ``webapp/models.py``:
|
|
|
|
.. literalinclude:: ../../examples/miniapps/fastapi-sqlalchemy/webapp/models.py
|
|
:language: python
|
|
|
|
Database
|
|
--------
|
|
|
|
Module ``database`` defines declarative base and utility class with engine and session factory.
|
|
See ``webapp/database.py``:
|
|
|
|
.. literalinclude:: ../../examples/miniapps/fastapi-sqlalchemy/webapp/database.py
|
|
:language: python
|
|
|
|
Tests
|
|
-----
|
|
|
|
Tests use :ref:`provider-overriding` feature to replace repository with a mock. See ``webapp/tests.py``:
|
|
|
|
.. literalinclude:: ../../examples/miniapps/fastapi-sqlalchemy/webapp/tests.py
|
|
:language: python
|
|
:emphasize-lines: 25, 45, 58, 74, 86, 97
|
|
|
|
Sources
|
|
-------
|
|
|
|
The source code is available on the `Github <https://github.com/ets-labs/python-dependency-injector/tree/master/examples/miniapps/fastapi-sqlalchemy>`_.
|
|
|
|
.. disqus::
|