That page covers a number of upgrade scenarios, the section for upgrading from 4.2 to 5.0 only has three entries[1], one of which is optional. [1] http://edgeg

That page covers a number of upgrade scenarios, the section for upgrading from 4.2 to 5.0 only has three entries[1], one of which is optional. [1] http://edgeguides.rubyonrails.org/upgrading_ruby_on_rails.html#upgrading-from-rails-4-2-to-rails-5-0 http://edgeguides.rubyonrails.org/upgrading_ruby_on_rails.ht...