Sequel migration helpers

001_create_laptops.rb

module Helper
  def create_product(name)
    create_table name do
      primary_key :id
      String :name, :null => false
    end
  end
end
  
Sequel.migration do
  up do
    create_product :laptops
  end

  down do
    drop_table :laptops
  end
end

# Error: NoMethodError: undefined method `create_product' for #<Sequel::Postgres::Database: