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1_valid_people_have_last_names.rb 199 字节
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Internal test migrations use the private 'Current' version  
Matthew Draper 已提交
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class ValidPeopleHaveLastNames < ActiveRecord::Migration::Current
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Implemented ActiveRecord::Migrations#copy based on James Adam's idea  
Piotr Sarnacki 已提交
2 3 4 5 6 7 8 
  def self.up
    add_column "people", "last_name", :string
  end

  def self.down
    remove_column "people", "last_name"
  end
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in the middle of refactoring  
Aaron Patterson 已提交
9 
end