What is params.expect and how to use it in Rails 8? ruby

What is params.expect and how to use it in Rails 8?

params.expect in Rails 8 replaces require/permit and fixes a real weakness: crafted params like ?user=string used to raise NoMethodError and 500 errors. How the new syntax works, how it handles arrays with precision, and how to migrate your controllers.

Jan 27, 2025