Notes
How to make Rails3 app to run on Ruby 2.5
$ sudo gem install bundler:1.17.3
$ bundle _1.17.3_ install
$ sudo sed -i '12 s/LONG_PASSWORD | //' \
/var/lib/gems/2.5.0/gems/mysql2-0.3.21/lib/mysql2/client.rb
$ echo 'module Arel
module Visitors
class DepthFirst < Arel::Visitors::Visitor
alias :visit_Integer :terminal
end
class Dot < Arel::Visitors::Visitor
alias :visit_Integer :visit_String
end
class ToSql < Arel::Visitors::Visitor
alias :visit_Integer :literal
end
end
end
' > config/initializers/arel.rb