How to use cookie based session like Flask?

I saw in the docs there is a mention of session but I couldn’t find any code example.

Specifically didn’t see how to leverage the app’s secret key and decrypt the message on subsequent requests.

I would like to do the following Flask route in starlette :

Also, is there a way to flash messages like Flask? Trying to migrate a project

@app.route("/login", methods=["GET", "POST"])
def login():
    email = None
    if request.method == "POST":
        #Check authentication in db here...
        session["email"] = request.form.get("email")
        return redirect(url_for("user_home"))
    elif "email" in session:
        return redirect(url_for("user_home"))
    return render_template("public.html", email=email)

@app.route("/home")
def user_home():
    #Not logged in
    if 'email' not in session :
        return redirect(url_for('login'))
    return render_template('home.html')

[theruziev]

First of all you need register SessionMiddleware, after that you can use request.session https://www.starlette.io/middleware/#sessionmiddleware

[theruziev]

1. Redirecting (url_for) in my example.

@app.route('/', methods=['GET', 'POST'])
def homepage(request: Request):
    if request.method == "POST":
        url = request.url_for("homepage_get")
        return RedirectResponse(url)

    return PlainTextResponse("GET METHOD")


@app.route('/test', methods=['GET'])
def homepage_get(request: Request):
    return PlainTextResponse('GET METHOD')

2. Flashing message on page. Starlette doesn’t have a flash functionality.