django: how to make a search bar?

Question

I am new to django. I have done an online order management page using django, where registered users can view their own list of orders. Now I want to add a search bar for users to easily search for any orders.

I noticed that in django admin user page, there is a search bar function. and This is exactly what I want. Can some one help to advise how to do the same search bar, incl. html and view.py, plus javascripts if needed. many thanks