10 lines
		
	
	
		
			305 B
		
	
	
	
		
			Ruby
		
	
	
	
	
	
			
		
		
	
	
			10 lines
		
	
	
		
			305 B
		
	
	
	
		
			Ruby
		
	
	
	
	
	
| class AddRegistrationStatusToConferences < ActiveRecord::Migration
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|   def change
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|     add_column :conferences, :registration_status, :string
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|     Conference.find_each do |conference|
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|     	conference.registration_status = conference.registration_open ? :open : :closed
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|     	conference.save!
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|     end
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|   end
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| end
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