# This migration comes from acts_as_taggable_on_engine (originally 6) class AddMissingIndexes < ActiveRecord::Migration def change add_index :taggings, :tag_id add_index :taggings, :taggable_id add_index :taggings, :taggable_type add_index :taggings, :tagger_id add_index :taggings, :context add_index :taggings, [:tagger_id, :tagger_type] add_index :taggings, [:taggable_id, :taggable_type, :tagger_id, :context], name: 'taggings_idy' end end