stevenbeales / mental-test

  def change

    create_table :assessment_instruments do |t|

      t.references :assessment, null: false, foreign_key: true

      t.references :instrument, null: false, foreign_key: true

      t.timestamps null: false, default: -> { 'CURRENT_TIMESTAMP' }

    end

    add_index :assessment_instruments, 

              %i[assessment_id instrument_id], 

              unique: true,

              name: 'index_by_assessment_instrument'

  end

end