set_database doesn't work in Rails 4.2

[antage]

In Rails 4.2 ActiveRecord::Base.configurations has all keys as string. But TS can't read database parameters because trying find it by symbol keys.

I convert all keys in symobls as workaround:

set_database ActiveRecord::Base.configurations["production"].map { |k, v| [k.to_sym, v] }.to_h

[pat]

Thanks for reporting this - I've just fixed it in the develop branch.