class <%= @migration_class_name %> < ActiveRecord::Migration<%= ActiveRecord::VERSION::MAJOR < 5 ? '' : '[5.0]' %>
  def up
    <% if nullable? %>
    add_column :<%= plural_table_name %>, :logux_fields_updated_at, :jsonb, null: false, default: {}
    <% else %>
    add_column :<%= plural_table_name %>, :logux_fields_updated_at, :jsonb, null: true
    change_column_default :<%= plural_table_name %>, :logux_fields_updated_at, {}
    <% end %>
  end

  def down
    remove_column :<%= plural_table_name %>, :logux_fields_updated_at
  end
end