Flask-Login Based User Authentication Functions

This code block includes two functions based on the Flask-Login library. The first function `user_login` is used for user login, which takes the username and password as parameters and attempts to log in the user using the `login_user` function. The second function `logout_user` is used to log out the current user, using the `logout_user` function.

Technology Stack : Flask, Flask-Login

Code Type : Flask-Login Function

Code Difficulty : Intermediate

                
                    
from flask_login import current_user, login_required, login_user

def user_login(username, password):
    # This function attempts to log in a user with the provided username and password
    # It uses the login_user function from flask-login to log in the user if credentials are correct

    # Simulating user authentication (in a real application, this would be replaced by an actual authentication process)
    user = User.query.filter_by(username=username).first()
    if user and user.password == password:  # Assuming 'password' is hashed in the database
        login_user(user)  # Log in the user

def logout_user():
    # This function logs out the current user
    # It uses the logout_user function from flask-login to log out the user

    logout_user()  # Log out the user