Flask JWT Router

Flask JWT Router is a Python library that adds authorised routes to a Flask app.

Read the Documentation here: Flask-JWT-Router

Installation

pip install flask-jwt-router

Basic Usage

from flask import Flask
from flask_jwt_router import JwtRoutes

app = Flask(__name__)

JwtRoutes(app)

# If you're using the Flask factory pattern:
jwt_routes = JwtRoutes()  # Example with *entity_model - see below

def create_app(config):
   ...
   jwt_routes.init_app(app)

Whitelist Routes

app.config["WHITE_LIST_ROUTES"] = [
    ("POST", "/register"),
]

@app.route("/register", methods=["POST"])
def register():
    return "I don't need authorizing!"

Prefix your api name to whitelisted routes

    # All routes will
app.config["JWT_ROUTER_API_NAME"] = "/api/v1"
app.config["WHITE_LIST_ROUTES"] = [
    ("POST", "/register"),
]

@app.route("/api/v1/register", methods=["POST"])
def register():
    return "I don't need authorizing!"
   

Bypass Flask-JWT-Router on specified routes

    # Define homepage template routes for example on JWT_IGNORE_ROUTES 
    # & still get to use the api name on request handlers returning resources
    app.config["IGNORED_ROUTES"] = [
        ("GET", "/")
    ]

Declare an entity model

# Create your entity model (example uses Flask-SqlAlchemy)
class UserModel(db.Model):
    id = db.Column(db.Integer, primary_key=True)
    name = db.Column(db.String)
# You can define the primary key name with `ENTITY_KEY` on Flask's config
app.config["ENTITY_KEY"] = "user_id"
# (`id` is used by default)
JwtRoutes(app)

# You can also specify a list of entity model classes

app.config["ENTITY_MODELS"] = [ UserModel, TeacherModel, ...etc ]

Authorization

from your_app import jwt_routes

# white list the routes
app.config["WHITE_LIST_ROUTES"] = [
    ("POST", "/register"),
    ("POST", "/login"),
]

@app.route("/register", methods=["POST"])
def register():
    """I'm registering a new user & returning a token!"""
    return jsonify({
        "token": jwt_routes.register_entity(entity_id=1, table_name='users')
    })

@app.route("/login", methods=["POST"])
def login():
    """I'm authorized & updating my token!"""
    return jsonify({
        "token": jwt_routes.update_entity(entity_id=1)
    })

*Warning: The table_name must be the same as your tablename or __tablename__ attribute's value. (With SqlAlchemy, you can define a __tablename__ attribute directly or else the name is derived from your entity’s database table name).

Create & update Tokens on Routes

Create a new entity & return a new token

@app.route("/register", methods=["POST"])
    def register():
        user_data = request.get_json()
        try:
            user = UserModel(**user_data)
            user.create_user() # your entity creation logic

            # Here we pass the id as a kwarg to `register_entity`
            token: str = jwt_routes.register_entity(entity_id=user.id, table_name="users")

            # Now we can return a new token!
            return {
                "message": "User successfully created.",
                "token": str(token),  # casting is optional
            }, 200

Access entity on Flask's global context

    from app import app, jwt_routes

    # Example uses Marshmallow to serialize entity object
    class EntitySchema(Schema):
        id = fields.Integer()
        name = fields.String()

    @app.route("/login", methods=["GET"])
    def login():
        user_data = g.get("user")
        try:
            user_dumped = UserSchema().dump(user_data)
        except ValidationError as _:
           return {
                       "error": "User requested does not exist."
                   }, 401
        return {
            "data": user_dumped,
            "token": jwt_routes.update_entity(entity_id=user_data.id),
        }, 200
        

If you are handling a request with a token in the headers you can call::

    jwt_routes.update_entity(entity_id=user_data.id)

If you are handling a request without a token in the headers you can call::

    jwt_routes.register_entity(entity_id=user_data.id, table_name="users")

An Example configuration for registering & logging in users of different types:

    app.config["IGNORED_ROUTES"] = [("GET", "/")]
    app.config["JWT_ROUTER_API_NAME"] = "/api/v1"
    app.config["WHITE_LIST_ROUTES"] = [
        ("POST", "/auth/user"), ("POST", "/auth/user/login"),
        ("POST", "/auth/teacher"), ("POST", "/auth/teacher/login"),
    ]
    app.config["ENTITY_MODELS"] = [UserModel, TeacherModel]

Authors

• joegasewicz - Initial work - @joegasewicz

Contributing

Pull requests are welcome. For major changes, please open an issue first to discuss what you would like to change.

Please make sure to update tests as appropriate.

Make sure you have Python versions: 3.6, 3.7, 3.8 Then run:

    tox

To update docs run:

    make html

License

MIT