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root / db / migrate / 021_add_tracker_position.rb @ 441:cbce1fd3b1b7

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class AddTrackerPosition < ActiveRecord::Migration
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  def self.up
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    add_column :trackers, :position, :integer, :default => 1
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    Tracker.find(:all).each_with_index {|tracker, i| tracker.update_attribute(:position, i+1)}
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  end
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  def self.down


    		
  

  

    
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    remove_column :trackers, :position


    		
  

  

    
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  end


    		
  

  

    
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end