How to Protect Individual Resources with Passwords

User authentication in Rails is a solved problem but how can we protect individual resources with a password? It turns out that all we need is vanilla Rails.Let’s say we’re building a file sharing website where users can upload files and share links with others. Files can be publicly available or protected with a password. We want to implement the protection scheme in the simplest possible manner. We’ll cover two approaches in the article:HTTP authentication that is simpler but offers poorer user experience.Password input that offers better user experience but is a bit more complicated.