5 lines
		
	
	
	
		
			210 B
		
	
	
	
		
			Ruby
		
	
	
	
	
	
			
		
		
	
	
			5 lines
		
	
	
	
		
			210 B
		
	
	
	
		
			Ruby
		
	
	
	
	
	
| class AddInviteIdToUsers < ActiveRecord::Migration[5.1]
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|   def change
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|     safety_assured { add_reference :users, :invite, null: true, default: nil, foreign_key: { on_delete: :nullify }, index: false }
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|   end
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| end
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