## mark a section (Learn more)

class IndexesToTaggingsAndGroupings < ActiveRecord::Migration def self.up add_index :taggings, [:taggable_id, :taggable_type] add_index :groupings, :asset_id end def self.down remove_index :taggings, [:taggable_id, :taggable_type] remove_index :groupings, :asset_id end end

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