Flask Application Context

App and Request Contexts

from flask import current_app, g

# App context
with app.app_context():
    db.create_all()
    print(current_app.config["DEBUG"])

# g — per-request storage
@app.before_request
def load_user():
    user_id = session.get("user_id")
    g.user = User.query.get(user_id) if user_id else None

@app.route("/profile")
def profile():
    if g.user is None:
        return redirect(url_for("auth.login"))
    return render_template("profile.html", user=g.user)