chenghung

POST /orders
{
  id: 5,
  state: 'payment-expected',
  _links: {
    self: {
      method: 'GET',
      href: '/orders/5',
    }

chenghung

 10     def get_sequence(name)
 11       data = self.find_or_create_by id: name
 12 
 13       data.with_lock do                # could not get lock error here
 14         data.sequence += 1
 15         data.save!
 16 
 17         data.sequence
 18       end
 19     end