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root / db / migrate / 20091017213027_add_missing_indexes_to_comments.rb @ 912:5e80956cc792
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class AddMissingIndexesToComments < ActiveRecord::Migration |
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def self.up |
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add_index :comments, [:commented_id, :commented_type] |
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add_index :comments, :author_id |
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end
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def self.down |
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remove_index :comments, :column => [:commented_id, :commented_type] |
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remove_index :comments, :author_id |
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end
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end
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