rails/rails — pull request #11190 by dkaplan88 (2013-06-29 22:17:32+00:00)
Title: Typo in Active Record Migrations Guide

See: http://guides.rubyonrails.org/migrations.html#supported-type-modifiers

Migration is
```bash
$ rails generate migration AddDetailsToProducts price:decimal{5,2} supplier:references{polymorphic}
```