db/migrate/20170924224550_create_pokeviewer_boxes.rb


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class CreatePokeviewerBoxes < ActiveRecord::Migration[5.1]
  def change
    create_table :pokeviewer_boxes do |t|
      t.references :trainer, null: false
      t.integer :number, null: false
      t.string :name, null: false

      t.timestamps
    end

    add_foreign_key :pokeviewer_boxes, :pokeviewer_trainers, column: :trainer_id

    add_index :pokeviewer_boxes, [:trainer_id, :number], unique: true
  end
end