Flask-Login extension - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to import the Flask-Login extension.

Flask

from flask_login import [1]

Drag options to blanks, or click blank then click option'

AFlaskLogin

BLoginManager

CLoginHandler

DUserLogin

Attempts:

3 left

💡 Hint

Common Mistakes

Using incorrect class names like FlaskLogin or UserLogin.

The LoginManager class is imported from flask_login to manage user sessions.

2fill in blank

medium

Complete the code to initialize the LoginManager with the Flask app.

Flask

login_manager = [1]()
login_manager.init_app(app)

Drag options to blanks, or click blank then click option'

ALoginManager

BUserManager

CSessionManager

DAuthManager

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong class names like UserManager or AuthManager.

The LoginManager instance is created and linked to the Flask app to manage login sessions.

3fill in blank

hard

Fix the error in the user loader function decorator.

Flask

@login_manager.[1]
def load_user(user_id):
    return User.get(user_id)

Drag options to blanks, or click blank then click option'

Aload

Buser

Clogin

Duser_loader

Attempts:

3 left

💡 Hint

Common Mistakes

Using '@login_manager.load_user_loader' or '@login_manager.load_user'.

The correct decorator is @login_manager.user_loader to register the user loader callback.

4fill in blank

hard

Fill both blanks to protect a route so only logged-in users can access it.

Flask

@app.route('/dashboard')
@[1]
def dashboard():
    return 'Welcome to your dashboard!'

Drag options to blanks, or click blank then click option'

Alogin_required

Blogin_manager

Cuser_loader

Dlogin_user

Attempts:

3 left

💡 Hint

Common Mistakes

Using '@login_manager' or '@user_loader' as decorators for routes.

The @login_required decorator restricts access to logged-in users only.

5fill in blank

hard

Fill all three blanks to log in a user after verifying credentials.

Flask

from flask_login import [1]

@app.route('/login', methods=['POST'])
def login():
    user = User.query.filter_by(username=request.form['username']).first()
    if user and user.check_password(request.form['password']):
        [2](user)
        return redirect([3])
    return 'Invalid credentials', 401

Drag options to blanks, or click blank then click option'

Alogin_user

Curl_for('dashboard')

Dlogout_user

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'logout_user' instead of 'login_user'.

Not redirecting after login.

Import login_user to log in the user, call login_user(user), and redirect to the dashboard page.