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class AddVersionToAuditableIndex < ActiveRecord::Migration[4.2]
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def up
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remove_index :audits, :name => 'auditable_index'
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add_index :audits, [:auditable_id, :auditable_type, :version], :name => 'auditable_index'
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end
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def down
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remove_index :audits, :name => 'auditable_index'
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add_index :audits, [:auditable_id, :auditable_type], :name => 'auditable_index'
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end
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end
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