Wojciech Wnętrzak

This problem still appears on rails master.
I updated sample failing app to rails master: https://github.com/morgoth/nullify-bug

I'm also submitting rebased pat...

Any more info is needed with this patch?

I'm adding a patch with rounding extension to Integer.
There is a little difference to Float extension - at the end I'm calling to_i to be sure that Float is no...

There are only Integer and Float as Numeric subclasses (Bignum and Fixnum are subclasses of Integer), so adding rounding extension to Integer should be enough.
...

To be consistent with Ruby 1.9 where we can call round with precision argument on any Numeric object, rounding extension from activesupport should be available ...

We're getting good results after overwriting arel method: https://github.com/rails/arel/blob/master/lib/arel/visitors/postgre... to return just super in any ca...

I just checked, and on rails master, Gemfile is generated with this example, but without proper require.
I'm adding a patch with working example of ruby-debug19...

Try to change line in your Gemfile containing ruby-debug19:

 gem "ruby-debug19", :require => "ruby-debug"

One more question:
Let's say we have responder in create action like:

  respond_with([:admin, @post])

I forgot to add require 'active_support/core_ext/array/wrap' for patch with fix.
This patch should be used instead.