2007-05-20 21:46:02 +04:00
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class AllowNullVersionEffectiveDate < ActiveRecord::Migration
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def self.up
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2008-02-13 00:11:16 +03:00
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change_column :versions, :effective_date, :date, :default => nil, :null => true
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2007-05-20 21:46:02 +04:00
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end
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def self.down
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raise IrreversibleMigration
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end
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end
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