db/migrate/20170916225306_create_pokeviewer_trainers.rb


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class CreatePokeviewerTrainers < ActiveRecord::Migration[5.1]
  def change
    create_table :trainers do |t|
      t.string :game, null: false
      t.string :name, null: false, limit: 191
      t.integer :number, null: false

      t.timestamps
    end

    add_index :trainers, [:name, :number], unique: true
  end
end