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# Module that can be included into a model to make it easier to ignore database
# columns.
#
# Example:
#
# class User < ActiveRecord::Base
# include IgnorableColumn
#
# ignore_column :updated_at
# end
#
module IgnorableColumn
extend ActiveSupport::Concern
module ClassMethods
def columns
super.reject { |column| ignored_columns.include?(column.name) }
end
def ignored_columns
@ignored_columns ||= Set.new
end
def ignore_column(*names)
ignored_columns.merge(names.map(&:to_s))
end
end
end
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