Can’t migrate database after scaffold. Section 2.2 Ruby on Rails Tutorial Michael Hartl

I just ran into this as well. This is due to ActiveRecord 4.2.0.beta4 passing a parameter to Arel::Nodes::BindParam.new. Arel 6.0.0 was just released today. In this version, BindParam does not accept any parameters in it’s initalizer. ActiveRecord has already fixed this on the master branch. Until beta5 is released you’ll need to lock your Gemfile … Read more