db/migrate/20210529195809_create_states.rb


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class CreateStates < ActiveRecord::Migration[6.1]
  def change
    create_table :states do |t|
      t.references :character, null: false, foreign_key: true
      t.references :condition, null: false, foreign_key: true
      t.timestamp :expires_at

      t.timestamps
    end
  end
end