Sometimes we need to ignore a database column. However Rails 4.x doesn't have any officially defined method which ignores a database column from Active Record. We can apply our patch on model to ignore certain columns. 1class User < ActiveRecord::Base 2 3 # Ignoring employee_email column 4 def self.columns 5 super.reject {|column| column.name == 'employee_email'} 6 end 7 8endCopy Rails 5 added ign