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Flask-SQLAlchemySession

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Provides an SQLAlchemy scoped session that creates unique sessions per Flask request, following the guidelines documented at Using Custom Created Scopes.

http://flask-sqlalchemy-session.readthedocs.org

Usage

Initialize a flask_scoped_session as you would a scoped_session, with the addition of a Flask app. Then use the resulting session to query models:

from flask import Flask, abort, jsonify
from flask_sqlalchemy_session import flask_scoped_session

app = Flask(__name__)
session = flask_scoped_session(session_factory, app)

@app.route("/users/<int:user_id>")
def user(user_id):
    user = session.query(User).get(user_id)
    if user is None:
        abort(404)
    return flask.jsonify(**user.to_dict())

The current_session is also provided as a convenient accessor to the session of the current request, in the same spirit of flask.request and flask.current_app.

from flask_sqlalchemy_session import current_session

@app.route("/users/<int:user_id>")
def user(user_id):
    user = current_session.query(User).get(user_id)
    if user is None:
        abort(404)
    return flask.jsonify(**user.to_dict())

Tests

You can run the tests by invoking PYTHONPATH=. py.test tests/ in the repository root.

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