[Study] 採用 ORM framework

Pipfile

@@ -26,6 +26,8 @@ pylint = "~=2.15.5"
 isort = "~=5.10.1"
 black = "~=22.10.0"
 pre-commit = "~=2.20.0"
+sqlalchemy = "~=1.4.45"
+flask-migrate = "~=4.0.0"
 
 [dev-packages]
 

app.py

@@ -19,6 +19,15 @@
 
 app = Flask(__name__, template_folder=template_dir)
 
+app.config['SQLALCHEMY_TRACK_MODIFICATIONS'] = False
+app.config['SQLALCHEMY_DATABASE_URI'] = f"postgresql://{pt_config.DB_USER}:{pt_config.DB_PASSWORD}@" \
+                                        f"{pt_config.DB_HOST}:5432/{pt_config.DB_NAME}"
+
+# Can see the sql syntax
+# app.config['SQLALCHEMY_ECHO'] = True
+app.config['SQLALCHEMY_POOL_SIZE'] = 8
+app.config['SQLALCHEMY_POOL_TIMEOUT'] = 3
+
 
 @app.route('/', methods=['GET'])
 def index():

migrations/README

@@ -0,0 +1 @@
+Single-database configuration for Flask.

migrations/alembic.ini

@@ -0,0 +1,50 @@
+# A generic, single database configuration.
+
+[alembic]
+# template used to generate migration files
+# file_template = %%(rev)s_%%(slug)s
+
+# set to 'true' to run the environment during
+# the 'revision' command, regardless of autogenerate
+# revision_environment = false
+
+
+# Logging configuration
+[loggers]
+keys = root,sqlalchemy,alembic,flask_migrate
+
+[handlers]
+keys = console
+
+[formatters]
+keys = generic
+
+[logger_root]
+level = WARN
+handlers = console
+qualname =
+
+[logger_sqlalchemy]
+level = WARN
+handlers =
+qualname = sqlalchemy.engine
+
+[logger_alembic]
+level = INFO
+handlers =
+qualname = alembic
+
+[logger_flask_migrate]
+level = INFO
+handlers =
+qualname = flask_migrate
+
+[handler_console]
+class = StreamHandler
+args = (sys.stderr,)
+level = NOTSET
+formatter = generic
+
+[formatter_generic]
+format = %(levelname)-5.5s [%(name)s] %(message)s
+datefmt = %H:%M:%S