What tools does Flask or MySQLAlchemy provide for selecting a specific user’s information in a database?

Solution

@views.route('/view-reservations', methods=['GET', 'POST'])
@login_required
def view_reservations():
    return render_template(
        'view-reservations.html', 
        user=current_user.username, 
        spa_query=SpaReservation.query.filter_by(cust_id=current_user.id).all(), 
        hotel_query=HotelReservation.query.filter_by(cust_id=current_user.id).all()
    )