Why does code need to be reloaded in Rails 3?

Question

I am a former PHP developer learning Rails and Sinatra. In PHP, every page request loaded all of the required files. If I changed some code and refreshed the page, I could b

Answer 1

How about a more high level approach:

    ActionDispatch::Reloader.cleanup!
    ActionDispatch::Reloader.prepare!

This was taken from Rails/ActiveRecord v3.2.13 - active_record/railtie.rb

The load approach didn't work for me. Just performing load caused a weird issue where it would trigger certain validators twice for me.

In order to fix that, I tried Object.send(:remove_const, User) before reloading User, but then I lost my observers on that class, so I started chasing my tail.

The above approach reloads all the classes, so maybe there is still yet a better approach to properly remove an individual class from cache and reload it...