def post(self):
form = LoginForm(request.form)
if form.validate():
username = request.form.get('username')
password = request.form.get('password')
try:
User.try_login(username, password)
except Exception as e:
flash('Invalid username or password. Please try again.',
'danger')
return render_template('login.html', form=form)
user = User.query.filter_by(username=username).first()
if not user:
user = User(username, password)
db.session.add(user)
db.session.commit()
login_user(user)
flash('You have successfully logged in.', 'success')
return redirect(url_for('auth.home'))
if form.errors:
flash(form.errors, 'danger')
return render_template('login.html', form=form)
