I have a case when I want to use postgres table inheritance. I want my STI inheritance_column to be virtual. What is the reason to check for inheritance_column in the columns_hash? https://github.com/rails/rails/blob/4-2-release_notes/activerecord/lib/active_record/inheritance.rb#L151 If we check only in the record (from the query result), then it would be possible to have STI based on virtual columns. Regards! -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Core" group. To unsubscribe from this group and stop receiving emails from it, send an email to rubyonrails-core+unsubscribe@googlegroups.com. To post to this group, send email to rubyonrails-core@googlegroups.com. Visit this group at http://groups.google.com/group/rubyonrails-core. For more options, visit https://groups.google.com/d/optout.