rank-king/migrate/001_tables.rb

# frozen_string_literal: true

Sequel.migration do
  change do
    create_table(:pools) do
      primary_key :id

      String :name, null: false

      DateTime :created_at, null: false
      DateTime :updated_at, null: false
    end

    create_table(:items) do
      primary_key :id

      foreign_key :pool_id, :pools, null: false

      String :title, null: false
      String :body, default: "", null: false

      DateTime :created_at, null: false
      DateTime :updated_at, null: false
    end

    create_table(:axes) do
      primary_key :id

      foreign_key :pool_id, :pools, null: false

      String :name, null: false
      String :better_legend, default: "", null: false
      String :worse_legend, default: "", null: false

      DateTime :created_at, null: false
      DateTime :updated_at, null: false
    end

    create_table(:ratings) do
      primary_key :id

      # TODO constrain these to be from the same pool
      foreign_key :axis_id, :axes, null: false
      foreign_key :item_id, :items, null: false

      float :mu, null: false
      float :sigma, null: false

      DateTime :created_at, null: false
      DateTime :updated_at, null: false
    end

    create_table(:rankings) do
      primary_key :id

      # TODO constrain these to be from the same pool
      foreign_key :axis_id, :axes, null: false
      foreign_key :winner_id, :items, null: false
      foreign_key :loser_id, :items, null: false

      DateTime :created_at, null: false
      DateTime :updated_at, null: false
    end
  end
end