2017-08-31 12:06:56 +08:00
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class AllowNullUserIdOnTopics < ActiveRecord::Migration[4.2]
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2013-09-04 15:35:10 -04:00
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def up
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change_column :topics, :user_id, :integer, null: true
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end
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def down
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change_column :topics, :user_id, :integer, null: false
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end
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end
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