Contents

class AddMissingUniqueIndices < ActiveRecord::Migration

  def self.up
    add_index :tags, :name, unique: true

    remove_index :taggings, :tag_id
    remove_index :taggings, [:taggable_id, :taggable_type, :context]
    add_index :taggings,
      [:tag_id, :taggable_id, :taggable_type, :context, :tagger_id, :tagger_type],
      unique: true, name: 'taggings_idx'
   end

  def self.down
    remove_index :tags, :name

    remove_index :taggings, name: 'taggings_idx'
    add_index :taggings, :tag_id
    add_index :taggings, [:taggable_id, :taggable_type, :context]
  end

end

Version data entries

3 entries across 3 versions & 1 rubygems

Version	Path
acts-as-taggable-on-3.1.1	db/migrate/2_add_missing_unique_indices.rb
acts-as-taggable-on-3.1.0	db/migrate/2_add_missing_unique_indices.rb
acts-as-taggable-on-3.1.0.rc1	db/migrate/2_add_missing_unique_indices.rb