Answers for "flask manually set user to logged in"

check if user log in flask

from flask_login import current_user

@app.route(...)
def your_route():
    return current_user.is_authenticated

flask authentication user without database

class User(UserMixin):

    def __init__(self, username, hash):
        self.name = username
        self.hash = hash

    @property
    def id(self):
        return self.name


@self.server.route('/api/login', methods=['GET', 'POST'])
def login():
    user = load_user(request.values.get('username'))
    if user and user.hash == request.values.get('hash'):
        login_user(user)
        return jsonify(status='ok', username=user.username)
    else:
        return jsonify(status='error', message='wrong username or hash')