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root / db / migrate / 20091017214406_add_missing_indexes_to_attachments.rb @ 441:cbce1fd3b1b7
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class AddMissingIndexesToAttachments < ActiveRecord::Migration |
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def self.up |
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add_index :attachments, [:container_id, :container_type] |
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add_index :attachments, :author_id |
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end
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def self.down |
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remove_index :attachments, :column => [:container_id, :container_type] |
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remove_index :attachments, :author_id |
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end
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end
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