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20150313012111_create_subscriptions_table.rb 463 Bytes
# rubocop:disable all
class CreateSubscriptionsTable < ActiveRecord::Migration
  def change
    create_table :subscriptions do |t|
      t.integer :user_id
      t.references :subscribable, polymorphic: true
      t.boolean :subscribed
      
      t.timestamps
    end

    add_index :subscriptions, 
              [:subscribable_id, :subscribable_type, :user_id],
              unique: true,
              name: 'subscriptions_user_id_and_ref_fields'
  end
end