通过表单传递数据库用户名和密码，用于Flask App中的数据库连接

I am working on a flask app, which connects to a DB2 database and gets data from the database but only when users enter their DB2 database username and password through a form. I am using WTF element in database connection login form (app also has an app user login), below is what I am trying to do, I have placed all the database connections parameters inside a routeI am working on a flask app, which connects to