developing a CRUD web api with login, log out and registration functionality on ruby on rails

1. The user should able to Register, login and logout from the site. N.B - Don’t use any third party Gem for register/login/logout

2. The site should have a lot of products of different categories. Display all products and user should be able to filter products by category.

3. Filter popular products by category. Popular products will be determined by unique hit counts by the different number of users, i.e, if product1 hit count, is 100 by 2 different users and product2 hit count is 95 by 5 different users, in this case, product2 will be in the top of the list of popular products.

N.B: Use minimal number of third-party gems