Flask-Project-Template/src/core/routes/pages/Flask_Login.py

# Python imports

# Lib imports
from flask import request, render_template, flash, redirect, url_for
from flask_login import current_user, login_user, logout_user

# App imports
from core import app, bcrypt, db, User, LoginForm
from core.utils import MessageHandler   # Get simple message processor


msgHandler = MessageHandler()
TITLE      = app.config['TITLE']

@app.route('/app-login', methods=['GET', 'POST'])
def app_login():
    if current_user.is_authenticated:
        return redirect(url_for("home"))

    _form = LoginForm()
    if _form.validate_on_submit():
        user = db.session.query(User).filter(User.username == _form.username.data).first()

        if user and bcrypt.check_password_hash(user.password, _form.password.data):
            login_user(user, remember=False)
            flash("Logged in successfully!", "success")
            return redirect(url_for("home"))

        flash("Username or password incorrect! Please try again...", "danger")

    return render_template('login.html', title=TITLE, form=_form)


@app.route('/app-logout')
def app_logout():
    logout_user()
    flash("Logged out successfully!", "success")
    return redirect(url_for("home"))