How do I implement JWT refresh tokens in Flask?

How do I implement JWT refresh tokens in Flask?

To implement JWT refresh tokens in Flask, you can use the Flask-JWT-Extended library. First, install it using pip.

What are the steps to set it up?

1. Install Flask-JWT-Extended. 2. Create a JWT manager. 3. Define your login route to issue access and refresh tokens.

Can you show me an example of the login route?

Sure! Here's a simple example:

from flask import Flask, jsonify, request
from flask_jwt_extended import JWTManager, create_access_token, create_refresh_token

app = Flask(__name__)
app.config['JWT_SECRET_KEY'] = 'your_secret_key'
jwt = JWTManager(app)

@app.route('/login', methods=['POST'])
def login():
    username = request.json.get('username')
    password = request.json.get('password')
    # Verify username and password
    access_token = create_access_token(identity=username)
    refresh_token = create_refresh_token(identity=username)
    return jsonify(access_token=access_token, refresh_token=refresh_token)

How do I refresh the access token using the refresh token?

You can create a route to refresh the access token like this:

@app.route('/refresh', methods=['POST'])
def refresh():
    refresh_token = request.json.get('refresh_token')
    # Verify the refresh token
    access_token = create_access_token(identity=username)
    return jsonify(access_token=access_token)