Today I Learned

A Hashrocket project

Read-Only Models

Are you in the midst of a big refactoring that is phasing out an ActiveRecord model? You may not be ready to wipe it from the project, but you don’t want it accidentally used to create any database records. You essentially want your model to be read-only until it is time to actually delete it.

This can be achieved by adding a readonly? method to that model that always returns true.

def readonly?
  true
end

ActiveRecord’s underlying persistence methods always check readonly? before creating or updating any records.

source

h/t Josh Davey

Looking for help? Hashrocket has been an industry leader in Ruby on Rails since 2008. Rails is a core skill for each developer at Hashrocket, and we'd love to take a look at your project. Contact us and find out how we can help you.