009_create_taggings.rb

Kirill Bezrukov (RedmineUP), 2011-02-21 13:37

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class CreateTaggings < ActiveRecord::Migration
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  def self.up
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    create_table :taggings, :id => false do |t|
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      t.column :tag_id, :integer
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      t.column :container_id, :integer
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      t.column :container_type, :string
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    end
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    add_index :taggings, [:container_id, :container_type, :container_id], :name => "taggings_ids", :unique => true 
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  end
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  def self.down
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    drop_table :taggings
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  end
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end