hide_deleted.rb

module HideDeleted
  def hide_deleted
    scope :existing, -> { where(deleted_at: nil) }
    scope :deleted,  -> { where('deleted_at IS NOT NULL') }

    define_method :deleted? do
      deleted_at.present?
    end

    define_method :destroy do
      update_attribute(:deleted_at, Time.zone.now)
    end
    alias_method :destroy!, :destroy
  end
end

ActiveRecord::Base.extend HideDeleted