How do I use decorators in Flask?

How do I use decorators in Flask?

In Flask, decorators are used to modify the behavior of functions. They are often used for routing and middleware.

Can you give me an example of a route decorator?

Sure! You can use the @app.route() decorator to define a route. For example:

@app.route('/hello')
def hello():
    return 'Hello, World!'

What if I want to add authentication to a route?

You can create a custom decorator for authentication. For example:

def login_required(f):
    @wraps(f)
    def decorated_function(*args, **kwargs):
        if not current_user.is_authenticated:
            return redirect(url_for('login'))
        return f(*args, **kwargs)
    return decorated_function

@app.route('/dashboard')
@login_required
def dashboard():
    return 'Welcome to your dashboard!'